HIROKI MIYAOKA

Last Updated :2022/11/01

Affiliations, Positions
Natural Science Center for Basic Research and Development, Associate Professor
Web Site
http://hydrogen.hiroshima-u.ac.jp/
E-mail
miyaokahiroshima-u.ac.jp
Other Contact Details
1-3-1 Kagamiyama, Higashi-Hiroshima, Japan
TEL : (+81)82-424-4604 FAX : (+81)
Self-introduction
Research on "sustainable material conversion" such as hydrogen production, hydrogen storage, nitride synthesis (ammonia) based on utilization of light elements such as Lithium (Li) and Sodium (Na) are carried out. In addition, analysis techniques for the above active materials are studied.

Basic Information

Major Professional Backgrounds

  • 2009/03/01, 2011/03/31, Hiroshima University, Institute for Advanced Materials Research, Assistant Professor (Special Appointment)
  • 2011/04/01, 2016/03/31, Hiroshima University, The Institute for Sustainable Sciences and Development, Lecturer (Special Appointment)
  • 2007/04/01, 2009/02, Hiroshima University, Institute for Advanced Materials Research, Research Fellow of the Japan Society for the Promotion of Science
  • 2016/04/01, 2017/03/31, Hiroshima University, Institute for Advanced Materials Research, Associate Professor

Academic Degrees

  • Doctor of Philosophy, Hiroshima University
  • Master of Science, Hiroshima University

Educational Activity

  • [Master's Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Quantum Matter Program
  • [Master's Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Transdisciplinary Science and Engineering Program
  • [Doctoral Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Quantum Matter Program
  • [Doctoral Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Transdisciplinary Science and Engineering Program

Research Fields

  • Engineering;Material engineering;Structural / Functional materials

Research Keywords

  • Hydrogen, Hydrogen storage, Hydrogen production, Energy conversion, Nitrides, Ammonia, Sustainable material science, Analysis technique

Affiliated Academic Societies

Educational Activity

Course in Charge

  1. 2022, Liberal Arts Education Program1, 2Term, Perspectives in Physics A
  2. 2022, Liberal Arts Education Program1, 1Term, Experimental Methods and Laboratory Work in Physics I
  3. 2022, Liberal Arts Education Program1, 2Term, Experimental Methods and Laboratory Work in Physics II
  4. 2022, Undergraduate Education, 3Term, Inorganic Chemistry I
  5. 2022, Undergraduate Education, 4Term, Inorganic Chemistry II
  6. 2022, Graduate Education (Master's Program) , 1Term, Introduction to Physics and Material Science
  7. 2022, Graduate Education (Master's Program) , First Semester, Seminar on Basic Sciences of Matter A
  8. 2022, Graduate Education (Master's Program) , Second Semester, Seminar on Basic Sciences of Matter B
  9. 2022, Graduate Education (Master's Program) , Academic Year, Academic Presentation in Basic Sciences of Matter
  10. 2022, Graduate Education (Master's Program) , 1Term, Exercises in Basic Sciences of Matter A
  11. 2022, Graduate Education (Master's Program) , 2Term, Exercises in Basic Sciences of Matter A
  12. 2022, Graduate Education (Master's Program) , 3Term, Exercises in Basic Sciences of Matter B
  13. 2022, Graduate Education (Master's Program) , 4Term, Exercises in Basic Sciences of Matter B
  14. 2022, Graduate Education (Master's Program) , 3Term, Functional Materials for Hydrogen
  15. 2022, Graduate Education (Master's Program) , 1Term, Introduction to Physics and Material Science
  16. 2022, Graduate Education (Master's Program) , Academic Year, Advanced Study in Quantum Matter
  17. 2022, Graduate Education (Doctoral Program) , Academic Year, Advanced Study in Quantum Matter
  18. 2022, Graduate Education (Master's Program) , Academic Year, Special Study of Advanced Science and Engineering Transdisciplinary Science and Engineering
  19. 2022, Graduate Education (Master's Program) , First Semester, Special Exercises of Advanced Science and Engineering Transdisciplinary Science and Engineering A
  20. 2022, Graduate Education (Master's Program) , Second Semester, Special Exercises of Advanced Science and Engineering Transdisciplinary Science and Engineering B
  21. 2022, Graduate Education (Master's Program) , 1Term, Sustainability Materials Science

Research Activities

Academic Papers

  1. Thermodynamics on Ammonia Absorption of Metal Halides and Borohydrides, JOURNAL OF PHYSICAL CHEMISTRY C, 118(32), 18412-18416, 2014
  2. ★, Microscopic characterization of metal-carbon-hydrogen composites (metal5Li, Mg), Journal of Applied Physics, 114(9), 93509-1-093509-7, 201309
  3. Structure and catalytic properties of Ni/MWCNTs and Ni/AC catalysts for hydrogen production via ammonia decomposition, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 39(1), 277-287, 2014
  4. Microstructure and hydrogen desorption characteristics of hydrogenated ScH2-MBn (M = Mg and Ca) systems synthesized by mechanical milling, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 38(16), 6744-6749, 2013
  5. ★, Synthesis and characterization of magnesium-carbon compounds for hydrogen storage, CARBON, 56, 50-55, 2013
  6. Destabilization of LiH by Li Insertion into Ge, JOURNAL OF PHYSICAL CHEMISTRY C, 117(11), 5650-5657, 2013
  7. Correlation between electrochemical behavior and hydrogen storage properties of Li-Sn system, JOURNAL OF ALLOYS AND COMPOUNDS, 580, S211-S215, 2013
  8. ★, Hydrogen absorption of catalyzed magnesium below room temperature, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 38(31), 13728-13733, 2013
  9. Improved hydrogen desorption from lithium hydrazide by alkali metal hydride, JOURNAL OF ALLOYS AND COMPOUNDS, 580, S320-S323, 2013
  10. Ammonia Synthesis via Non-Equilibrium Reaction of Lithium Nitride in Hydrogen Flow Condition, JOURNAL OF THE JAPAN INSTITUTE OF METALS, 77(12), 580-584, 2013
  11. ★, Chemical Hydrogen Storage of Carbon Material, JOURNAL OF THE JAPAN INSTITUTE OF METALS, 77(12), 552-558, 2013
  12. Hydrogen production via thermochemical water-splitting by lithium redox reaction, JOURNAL OF ALLOYS AND COMPOUNDS, 580, S410-S413, 2013
  13. Synthesis of Calcium Borohydride by Milling Hydrogenation of Hydride and Boride, JOURNAL OF THE JAPAN INSTITUTE OF METALS, 77(12), 609-614, 2013
  14. Catalytic Effect of Niobium Oxide on Hydrogen Absorption and Desorption Process for Magnesium, JOURNAL OF THE JAPAN INSTITUTE OF METALS, 77(12), 636-640, 2013
  15. ★, Low-temperature water-splitting by sodium redox reaction, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 37(23), 17709-17714, 2012
  16. Lithium hydrazide as a potential compound for hydrogen storage, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 37(7), 5750-5753, 2012
  17. Comparative Study of Structural Changes in NH3BH3, LiNH2BH3, and KNH2BH3 During Dehydrogenation Process, JOURNAL OF PHYSICAL CHEMISTRY C, 116(9), 5957-5964, 2012
  18. ★, Compressed hydrogen production via reaction between liquid ammonia and alkali metal hydride, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 36(14), 8217-8220, 2011
  19. Solid state NMR study on the thermal decomposition pathway of sodium amidoborane NaNH2BH3, JOURNAL OF MATERIALS CHEMISTRY, 21(8), 2609-2615, 2011
  20. ★, Hydrogen Desorption Reaction between Hydrogen-Containing Functional Groups and Lithium Hydride, JOURNAL OF PHYSICAL CHEMISTRY C, 114(18), 8668-8674, 2010
  21. ★, Synthesis and characterization of lithium-carbon compounds for hydrogen storage, JOURNAL OF ALLOYS AND COMPOUNDS, 509(3), 719-723, 2011
  22. Thermal decomposition of alkaline-earth metal hydride and ammonia borane composites, International Journal of Hydrogen Energy, 35(22), 12405-12409, 201011
  23. ★, Ammonia Synthesis via Non-Equilibrium Reaction of Lithium Nitride in Hydrogen Flow Condition, MATERIALS TRANSACTIONS, 56(3), 410-414, 2015
  24. Tunneling measurements of CeRhAs single crystal, Physica B: Condensed Matter, 378(1), 786-787, 20060501
  25. ★, Thermodynamic and structural properties of ball-milled mixtures composed of nano-structural graphite and alkali(-earth) metal hydride, Journal of Alloys and Compounds, 432(1), 303-307, 20070425
  26. Hydrogen storage properties in a composite of lithium hydride and boron nitride with hydrocarbon groups, JOURNAL OF ALLOYS AND COMPOUNDS, 446, 39-43, 2007
  27. Recyclable hydrogen storage system composed of ammonia and alkali metal hydride, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 34(24), 9760-9764, 2009
  28. ★, Hydrogen storage properties of hydrogenated graphite destabilized by mixing with lithium hydride, Tanso, 45(226), 2-7, 20070115
  29. Hydrogenation properties of lithium intercalated graphite, TANSO, 136-139, 2008
  30. Ammoniaborane as Hydrogen Storage Material, Ceramics Japan, 46(3), 191-195, 2011
  31. Thermochemical Hydrogen Production by Low Temperature Water Splitting(Hydrogen Production from Renewable Energy), Journal of the Japan Institute of Energy, 94(1), 19-26, 20150120
  32. Structural and Electronic Interplay in the Gap Formation in CeRhAs1-xSbx (0 < x < 1), Tokyo Sugaku Kaisya Zasshi, 73(1), 262-268, 2004
  33. ★, Kinetic Modification on Hydrogen Desorption of Lithium Hydride and Magnesium Amide System, MATERIALS, 8, 3896-3909, 2015
  34. ★, In-Situ XAS for Niobium Oxide Catalyst on Hydrogen Absorption and Desorption of Magnesium, JOURNAL OF THE JAPAN INSTITUTE OF METALS, 79(3), 107-111, 2015
  35. ★, Catalysis of nickel nanoparticles with high thermal stability for ammonia decomposition, APPLIED CATALYSIS A-GENERAL, 491, 184-188, 2015
  36. ★, Synthesis of nickel nanoparticles with excellent thermal stability in micropores of zeolite, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 38(31), 13579-13586, 2013
  37. Effects of Metal Oxide Additives on Anode Properties of Magnesium Hydride for All-Solid-State Lithium Ion Batteries, Journal of the Fuel Society of Japan, 93(9), 926-930, 2014
  38. Improvement of hydrogen desorption kinetics in the LiH-NH3 system by addition of KH, CHEMICAL COMMUNICATIONS, 47, 12227-12229, 2011
  39. Superior Hydrogen Exchange Effect in the MgH2-LiBH4 System, JOURNAL OF PHYSICAL CHEMISTRY C, 114, 13132-13135, 2010
  40. Thermochemical Energy Storage by Water-splitting Via Redox Reaction of Alkali Metals, 49, 934-2014
  41. Thermochemical Water-splitting Reaction by Alkali Metal-Cobalt Oxide, Journal of the Fuel Society of Japan, 92(9), 909-912, 2013
  42. Thermochemical Hydrogen Production by Water-splitting at Low Temperature, 42(7), 7-11, 201307
  43. Thermochemical Hydrogen Production by Alkali Metal Redox Cycle, 14(1), 48-52, 2014
  44. Research on Hydrogen and Ammonia Production by Solar Heat Energy, 56(5), 274-277, 201410
  45. "Hydrogen and Materials Characteristic in Solids II", The Journal of the Japan Institute of Metals.A, 79(3), 77-77, 2015
  46. Tailoring the absorption-desorption properties of KSiH3 compound using nano-metals (Ni, Co, Nb) as catalyst, JOURNAL OF ALLOYS AND COMPOUNDS, 645, S144-S147, 20151005
    Link to Paper Search Results by DOI
  47. Catalysis of Lithium Chloride and Alkali Metal Borohydrides on Hydrogen Generation of Ammonia and Lithium Hydride System, JOURNAL OF PHYSICAL CHEMISTRY C, 119(34), 19922-19927, 20150827
    Link to Paper Search Results by DOI
  48. Correlation between particle size and hydrogen generation properties on ammonia and lithium hydride system, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 40(43), 14911-14915, 20151116
    Link to Paper Search Results by DOI
  49. Anode properties of Al2O3-added MgH2 for all-solid-state lithium-ion batteries, JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 19(12), 3639-3644, 201512
    Link to Paper Search Results by DOI
  50. Activation on Ammonia Absorbing Reaction for Magnesium Chloride, JOURNAL OF PHYSICAL CHEMISTRY C, 119(47), 26296-26302, 20151126
    Link to Paper Search Results by DOI
  51. Destabilization of lithium hydride by the substitution of group 14 elements: A review, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 41(14), 5969-5978, 20160420
    Link to Paper Search Results by DOI
  52. Electrochemical Performance of Titanium Hydride for Bulk-Type All-Solid-State Lithium-Ion Batteries, MATERIALS TRANSACTIONS, 57(5), 755-757, 201605
    Link to Paper Search Results by DOI
  53. High compressed hydrogen production via direct electrolysis of liquid ammonia, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 41(33), 14529-14534, 20160907
    Link to Paper Search Results by DOI
  54. Hydrogen Ab/Desorption of LiH-KH Composite and Ammonia System, MATERIALS TRANSACTIONS, 57(7), 1215-1219, 2016
    Link to Paper Search Results by DOI
  55. Catalytic hydrolysis of sodium borohydride on Co catalysts, INTERNATIONAL JOURNAL OF ENERGY RESEARCH, 40(15), 2078-2090, 201612
    Link to Paper Search Results by DOI
  56. Two-Peak Mystery of LiNH2 NaH Dehydrogenation Is Solved? A Study of the Analogous Sodium Amide/Lithium Hydride System, JOURNAL OF PHYSICAL CHEMISTRY C, 120(49), 27903-27909, 20161215
    Link to Paper Search Results by DOI
  57. Bulk-Type All-Solid-State Lithium-Ion Batteries: Remarkable Performances of a Carbon Nanofiber-Supported MgH2 Composite Electrode, ACS APPLIED MATERIALS & INTERFACES, 9(3), 2261-2266, 20170125
    Link to Paper Search Results by DOI
  58. Nitrogen Dissociation via Reaction with Lithium Alloys, ACS OMEGA, 2(3), 1081-1088, 201703
    Link to Paper Search Results by DOI
  59. Surface modification of MgH2 by ZrCl4 to tailor the reversible hydrogen storage performance, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 42(9), 6152-6159, 20170302
    Link to Paper Search Results by DOI
  60. Synthesis, structural characterization, and hydrogen desorption properties of Na[Al(NH2BH3)(4)], INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 42(9), 6173-6180, 20170302
    Link to Paper Search Results by DOI
  61. Synthesis, Characterization, and Structure of a Reduced Preyssler-type Polyoxometalate, CHEMISTRY LETTERS, 46(4), 602-604, 201704
    Link to Paper Search Results by DOI
  62. Enhancement of hydrogen desorption kinetics in magnesium hydride by doping with lithium metatitanate, JOURNAL OF ALLOYS AND COMPOUNDS, 711, 400-405, 20170715
    Link to Paper Search Results by DOI
  63. Micro-alloyed Mg2Ni for better performance as negative electrode of Ni-MIS battery and hydrogen storage, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 42(8), 5220-5226, 20170223
    Link to Paper Search Results by DOI
  64. Thermal decomposition of sodium amide, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 42(8), 5213-5219, 20170223
    Link to Paper Search Results by DOI
  65. Catalytic effect of bis (cyclopentadienyl) nickel II on the improvement of the hydrogenation dehydrogenation of Mg-MgH2 system, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 42(27), 17178-17183, 20170706
    Link to Paper Search Results by DOI
  66. How does TiF4 affect the decomposition of MgH2 and its complex variants? - An XPS investigation, JOURNAL OF MATERIALS CHEMISTRY A, 5(30), 15543-15551, 20170814
    Link to Paper Search Results by DOI
  67. Improved hydrogen release from magnesium borohydride by ZrCl4 additive, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 42(35), 22342-22347, 20170831
    Link to Paper Search Results by DOI
  68. Ammonia suppression during decomposition of sodium amide by the addition of metal hydride, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 42(35), 22388-22394, 20170831
    Link to Paper Search Results by DOI
  69. Study on the thermal decomposition of NaBH4 catalyzed by ZrCl4, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 42(35), 22432-22437, 20170831
    Link to Paper Search Results by DOI
  70. A new synthesis route of ammonia production through hydrolysis of metal - Nitrides, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 42(39), 24897-24903, 20170928
    Link to Paper Search Results by DOI
  71. Doping effect of Nb species on hydrogen desorption properties of AlH3, JOURNAL OF ALLOYS AND COMPOUNDS, 734, 55-59, 20180215
    Link to Paper Search Results by DOI
  72. Development of Mg-Li-B based advanced material for onboard hydrogen storage solution, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 42(7), 3963-3970, 20170216
    Link to Paper Search Results by DOI
  73. Study of cyclic performance of V-Ti-Cr alloys employed for hydrogen compressor, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 43(5), 2881-2889, 20180201
    Link to Paper Search Results by DOI
  74. MgH2-CoO: a conversion-type composite electrode for LiBH4-based all-solid-state lithium ion batteries, RSC ADVANCES, 8(41), 23468-23474, 2018
    Link to Paper Search Results by DOI
  75. Ammonia, a Switch for Controlling High Ionic Conductivity in Lithium Borohydride Ammoniates, JOULE, 2(8), 1522-1533, 20180815
    Link to Paper Search Results by DOI
  76. Hydrogen Desorption Isobar Properties of Ti1.1CrMn at High Temperatures and Pressures, MATERIALS TRANSACTIONS, 59(5), 855-857, 2018
    Link to Paper Search Results by DOI
  77. Hybrid nickel-metal hydride/hydrogen battery, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 44(8), 4263-4270, 20190208
    Link to Paper Search Results by DOI
  78. Operando spectroscopic analyses for the ammonia absorption process of sodium borohydride, CHEMICAL COMMUNICATIONS, 55(15), 2150-2153, 20190221
    Link to Paper Search Results by DOI
  79. Eutectic Phenomenon of LiNH2-KH Composite in MH-NH3 Hydrogen Storage System, MOLECULES, 24(7), 20190405
    Link to Paper Search Results by DOI
  80. Review on Ammonia Absorption Materials: Metal Hydrides, Halides, and Borohydrides, ACS APPLIED ENERGY MATERIALS, 1(2), 232-242, 201802
    Link to Paper Search Results by DOI
  81. Highly purified hydrogen production from ammonia for PEM fuel cell, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 43(31), 14486-14492, 20180802
    Link to Paper Search Results by DOI
  82. Synthesis of sodium-magnesium amidoborane by sodium amide: An investigation of functional properties for hydrogen/ammonia storage, JOURNAL OF ALLOYS AND COMPOUNDS, 801, 645-650, 20190915
    Link to Paper Search Results by DOI
  83. Hydrogen Sorption and Cyclic Compressor Performance Of V40Ti21.5Cr33.5M5 (M = Nb, Zr, Fe) Alloys, JOURNAL OF THE JAPAN INSTITUTE OF ENERGY, 98(7), 157-164, 201907
    Link to Paper Search Results by DOI
  84. Room-Temperature Hydrogen Absorption of Titanium with Surface Modification by Organic Solvents, JOURNAL OF PHYSICAL CHEMISTRY C, 123(32), 19269-19274, 20190815
    Link to Paper Search Results by DOI
  85. Vanadium Hydride as Conversion Type Negative Electrode for All-Solid-State Lithium-Ion-Battery, MATERIALS TRANSACTIONS, 60(10), 2183-2187, 2019
    Link to Paper Search Results by DOI
  86. Understanding the mechanism of photochromism in double-layer metal oxide using X-ray photoelectron spectroscopy, CHEMICAL PHYSICS LETTERS, 739, 202001
    Link to Paper Search Results by DOI
  87. Pseudo catalytic ammonia synthesis by lithium-tin alloy, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 45(11), 6806-6812, 20200228
    Link to Paper Search Results by DOI
  88. The catalytic effect of ZrCl4 on thermal dehydrogenation LiAlD4, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 45(28), 14413-14417, 20200521
    Link to Paper Search Results by DOI
  89. Critical Temperature and Pressure Conditions of Degradation during Thermochemical Hydrogen Compression: A Case Study of V-Based Hydrogen Storage Alloy, ENERGIES, 13(9), 202005
    Link to Paper Search Results by DOI
  90. Concentration-composition-isotherm for the ammonia absorption process of zirconium phosphate, RSC ADVANCES, 10(35), 20882-20885, 20200601
    Link to Paper Search Results by DOI
  91. Eutectic melting in x(2LiBH(4)-MgH2) hydrogen storage system by the addition of KH, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 45(34), 17000-17005, 20200703
    Link to Paper Search Results by DOI
  92. Surface modification effects of graphite for selective hydrogen absorption by titanium at room temperature, CHEMICAL COMMUNICATIONS, 56(53), 7237-7240, 20200707
    Link to Paper Search Results by DOI
  93. Proton-based solid acids for ammonia absorption in ammonia water, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 45(41), 22189-22194, 20200821
    Link to Paper Search Results by DOI
  94. Effective Factor on Catalysis of Niobium Oxide for Magnesium, ACS OMEGA, 5(34), 21906-21912, 20200901
    Link to Paper Search Results by DOI
  95. Surface-Controlled Conversion of Ammonia Borane from Boron Nitride, ENERGIES, 13(21), 202011
    Link to Paper Search Results by DOI
  96. Thermodynamic and Spectroscopic Analyses of Zirconium Phosphate-Absorbed Ammonia, JOURNAL OF PHYSICAL CHEMISTRY C, 125(7), 3758-3763, 20210225
    Link to Paper Search Results by DOI
  97. Synthesis of Highly Activated Magnesium by Niobium and Tantalum Gel Oxide Catalyst, MATERIALS TRANSACTIONS, 62(2), 284-289, 2021
    Link to Paper Search Results by DOI
  98. Electron tunneling experiments on la-substituted Kondo-semiconductor CeRhAs, PHYSICA B-CONDENSED MATTER, 383(1), 26-27, 2006
  99. Hydrogen storage properties of nano-structural carbon and metal hydrides composites, PHYSICA B-CONDENSED MATTER, 383(1), 51-52, 2006
  100. Hydrogen desorption properties of Li-BN-H system synthesized by mechanical milling, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 33(12), 3128-3131, 2008
  101. Characterization of hydrogen absorption/desorption states on lithium-carbon-hydrogen system by neutron diffraction, JOURNAL OF APPLIED PHYSICS, 104(5), 2008
  102. Electron Spin Resonance Investigation of Hydrogen Absorption in Ball-Milled Graphite, JOURNAL OF PHYSICAL CHEMISTRY C, 113(14), 5409-5416, 2009
  103. The reaction process of hydrogen absorption and desorption on the nanocomposite of hydrogenated graphite and lithium hydride, NANOTECHNOLOGY, 20(20), 2009
  104. Molecular hydrogen carrier with activated nanohydride and ammonia, JOURNAL OF MATERIALS RESEARCH, 24(7), 2185-2190, 2009
  105. Hydrogen storage properties of lithium silicon alloy synthesized by mechanical alloying, JOURNAL OF POWER SOURCES, 196(1), 504-507, 2011
  106. Anomalous hydrogen absorption on non-stoichiometric iron-carbon compound, JOURNAL OF ALLOYS AND COMPOUNDS, 507(2), 547-550, 2010
  107. Improvement of reaction kinetics by metal chloride on ammonia and lithium hydride system, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 37(21), 16025-16030, 2012
  108. Anode properties of magnesium hydride catalyzed with niobium oxide for an all solid-state lithium-ion battery, CHEMICAL COMMUNICATIONS, 49(64), 7174-7176, 2013
  109. Catalytic modification in dehydrogenation properties of KSiH3, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 16(47), 26163-26167, 2014
  110. Catalytic modification in dehydrogenation properties of KSiH3, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 16(47), 26163-26167, 2014
  111. Evaluation of the enthalpy change due to hydrogen desorption for M-N-H (M = Li, Mg, Ca) systems by differential scanning calorimetry, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 40(3), 1516-1522, 2015
  112. Metal hydride-based materials towards high performance negative electrodes for all-solid-state lithium-ion batteries, CHEMICAL COMMUNICATIONS, 51(48), 9773-9776, 2015
  113. Study of cyclic performance of V-Ti-Cr alloys employed for hydrogen compressor, INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 43(5), 2881-2889, 2018
  114. Synergetic NH3 absorption properties of the NaBH4–LiBH4 mixed system, Chemical Communications, 57(49), 6003-6006, 20210623
  115. Analysis of sodium generation by sodium oxide decomposition on corrosion resistance materials: a new approach towards sodium redox water-splitting cycle, RSC Advances, 11(34), 21017-21022, 20210609
  116. Synergetic NH3 absorption properties of the NaBH4–LiBH4 mixed system, Chemical Communications, 57(49), 6003-6006, 20210617

Publications such as books

  1. 2016/00/00, Solar to Chemical Energy Conversion, Thermochemical Water Splitting by Concentrated Solar Power, Springer International Publishing, 2016, 0, Scholarly Book, Joint work, English, 978-3-319-25400-5

Invited Lecture, Oral Presentation, Poster Presentation

  1. Nitrogen Dissociation and Pseudo Catalytic Ammonia Synthesis by Lithium Alloy, Hiroki Miyaoka, IUPAC 15th International Conference on Novel Materials and their Synthesis (NMS-XIV), 2019/09/06, With Invitation, English, IUPAC, Guangzhou, China
  2. Green Hydrogen Production via Thermochemical Water-Splitting by Sodium-Redox Cycle and Low Temperature Heat, Hiroki Miyaoka, The 3rd International Symposium on Fuels and Energy (ISFE2019), 2019/07/08, With Invitation, English
  3. Study on catalytic activation for Mg hydrogen storage, Hiroki Miyaoka, Hiroyuki Gi, Keita Shinzato, Takashi Ogi, Masahiro Sadakane, Takayuki Ichikawa, Study of matter at extreme conditions (SMEC2019), 2019/03/20, With Invitation, English, US
  4. Research on Catalytic Mechanism of Niobium Oxide for Hydrogen Storage Properties of Magnesium, Hiroki Miyaoka, IUPAC 14th International Conference on Novel Materials and their Synthesis (NMS-XIV), 2018/10/23, With Invitation, English, IUPAC, Guangzhou, China
  5. Highly Purified Hydrogen Production from Ammonia for Fuel Cell Vehicles, Hiroki Miyaoka, Yoshitsugu Kojima, Takayuki Ichikawa, IUPAC 13th International Conference on Novel Materials and their Synthesis (NMS-XIII), 2017/10/17, With Invitation, English, IUPAC, Nanjing, China
  6. Reaction Properties of Lithium alloys with Nitrogen, Hiroki Miyaoka, IUPAC 12th International Conference on Novel Materials and their Synthesis (NMS-XII), 2016, With Invitation, English, Changsha, China
  7. Hydrogen production via thermochemical and electrochemical hybrid process by sodium alloy, Hiroki Miyaoka, THERMEC 2016, 2016, With Invitation, English, Graz, Austria
  8. Kinetics of Niobium Oxide Catalyzed Magnesium, Hiroki Miyaoka, Takayuki Ichikawa, Yoshitsugu Kojima, Frontiers in Materials Processing Applications, Research & Technology (FiMPART' 15), 2015/06/13, With Invitation, English, Hyderabad, India
  9. Ammonia and Alkali Metal Hydride System as Hydrogen Storage, Hiroki Miyaoka, International Conference on Composites/nano Engineering (ICCE-23), 2015/07/14, With Invitation, English, Chengdu, China
  10. Hydrogen Storage and Generation Properties of Ammonia and Alkali Metal Hydride System, Hiroki Miyaoka, IUPAC 10th International Conference on Novel Materials and their Synthesis (NMS-X), 2014, With Invitation, English, Zhengzhou, China
  11. Hydrogen Production via Thermochemical Water-Splitting by Alkali Metal Cycle, Hiroki Miyaoka, Takayuki Ichikawa, Yoshitsugu Kojima, 6th Forum on New Materials in 13th International Conference on Modern Materials and Technologies (CIMTEC 2014), 2014, With Invitation, English, Montecatini Terme, Italy
  12. Ammonia and alkali metal hydride system for hydrogen storage, Hiroki Miyaoka, Takayuki ichikawa, Yoshitsugu Kojima, THERMEC 2013, 2013, With Invitation, English, Las Vegas, USA
  13. Thermochemical Water-Splitting by Alkali Metal Redox Cycle, Hiroki Miyaoka, Takayuki Ichikawa, Yoshitsugu Kojima, 9th IUPAC International Conference on Novel Materials and their Synthesis (NMS-IX), 2013, With Invitation, English, Shanghai, China
  14. Sodium Redox Reaction Based System for Thermochemical Hydrogen Production, Hiroki Miyaoka, Takayuki Ichikawa, Yoshitsugu Kojima, IUPAC 8th International Conference on Novel Materials and Synthesis (NMS-VIII), 2012, With Invitation, English, Xi-An, China

Awards

  1. 2012/12/09, Best Oral Award, 3rd Special Symposium on Advances in Functional Materials (AFM-3), Energy Conversion by Redox Reaction of Alkali Metals
  2. 2014/07/29, Best Presentation Award (in area III Solar Thermal Applications), Grand Renewable Energy 2014 (GRE2014), Thermochemical water-splitting by alkali metal redox cycle
  3. 2016/09/23, Poster Award (JIM2016 fall annual meeting), 公益社団法人日本金属学会会長

External Funds

Acceptance Results of Competitive Funds

  1. 2022/10
  2. 2022/06, 2024/05
  3. 2006/04/01, 2007/03/31
  4. 2007/04/01, 2009/02/28
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  5. 2012/04/01, 2013/03/31
  6. 2012/01/01, 2012/12/31
  7. 2013/04/01, 2014/03/31
  8. KAKENHI, 2015, 2016
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  9. KAKENHI, 2017/04/01, 2020/03/31
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  10. KAKENHI(Grant-in-Aid for Scientific Research on Innovative Areas), 2019, 2020
  11. KAKENHI(Grant-in-Aid for Scientific Research (B)), 2020, 2022

Social Activities

Organizing Academic Conferences, etc.

  1. 4th ISSD Workshop on Sustainable Science, 2014/11, 2014/11
  2. 5th PU-HU Symposium on Advanced materials for Energy, 2016/03, 2016/03
  3. 2nd Hiroshima International Symposium on Sustainability Sciences, 2014/11, 2014/11
  4. 3rd Workshop on Advanced Materials for Energy, 2013/10, 2013/10
  5. 2nd ISSD Workshop on Sustainable Science, 2012/08, 2012/08
  6. ISSD Workshop on Sustainable Science, 2011/11, 2011/11
  7. Hiroshima International Symposium on Sustainability Sciences, 2012/08, 2012/08