2026 Masaaki Hirayama: Materials Science Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Materials Science	47	10974	10603	681	648	279	16139
Chemistry	45	16236	14656	1279	1160	209	15303

Overview

Masaaki Hirayama is affiliated with the Tokyo Institute of Technology in Japan. Their research primarily focuses on engineering and materials science, with significant contributions in subfields such as electrical and electronic engineering, materials chemistry, automotive engineering, inorganic chemistry, and electronic, optical, and magnetic materials.

Their work covers several main topics, including:

Advancements in Battery Materials
Advanced Battery Materials and Technologies
Advanced Battery Technologies Research
Thermal Expansion and Ionic Conductivity
Inorganic Chemistry and Materials
Machine Learning in Materials Science
Hydrogen Storage and Materials

Frequent coauthors collaborating with Masaaki Hirayama include:

Kota Suzuki
Ryoji Kanno
Naoki Matsui
K. Watanabe
Satoshi Hori

Key publication venues where Hirayama's work has appeared multiple times are:

ECS Meeting Abstracts
Batteries & Supercaps
Electrochemistry
ACS Applied Energy Materials
Journal of Materials Chemistry A

Recent papers authored or coauthored by Masaaki Hirayama include:

A lithium superionic conductor for millimeter-thick battery electrode, 2023, Science
Understanding the impedance spectra of all-solid-state lithium battery cells with sulfide superionic conductors, 2022, Journal of Power Sources
Ionic conduction mechanism of a lithium superionic argyrodite in the Li-Al-Si-S-O system, 2020, Materials Advances
Oxygen Substitution for Li-Si-P-S-Cl Solid Electrolytes toward Purified Li₁₀GeP₂S₁₂-Type Phase with Enhanced Electrochemical Stabilities for All-Solid-State Batteries, 2020, Chemistry of Materials
Performance of Li4Ti5O12-based reference electrode for the electrochemical analysis of all-solid-state lithium-ion batteries, 2020, Electrochemistry Communications

Best Publications

A lithium superionic conductor

Noriaki Kamaya;Kenji Homma;Yuichiro Yamakawa;Masaaki Hirayama

5171
Citations
High-power all-solid-state batteries using sulfide superionic conductors

Yuki Kato;Yuki Kato;Satoshi Hori;Toshiya Saito;Kota Suzuki

3419
Citations
A lithium superionic conductor for millimeter-thick battery electrode

Unknown

468
Citations
Crystal structure and phase transitions of the lithium ionic conductor Li3PS4

Kenji Homma;Masao Yonemura;Takeshi Kobayashi;Miki Nagao

424
Citations
Dynamic structural changes at LiMn2O4/electrolyte interface during lithium battery reaction.

Masaaki Hirayama;Hedekazu Ido;KyungSu Kim;Woosuk Cho

413
Citations
Bulk-Type All Solid-State Batteries with 5 V Class LiNi0.5Mn1.5O4 Cathode and Li10GeP2S12 Solid Electrolyte

Gwangseok Oh;Masaaki Hirayama;Ohmin Kwon;Kota Suzuki

289
Citations
Pure H– conduction in oxyhydrides

Genki Kobayashi;Yoyo Hinuma;Shinji Matsuoka;Akihiro Watanabe

232
Citations
All-Solid-State Batteries with Thick Electrode Configurations

Yuki Kato;Shinya Shiotani;Keisuke Morita;Kota Suzuki

230
Citations
Superionic Conductors: Li10+δ[SnySi1–y]1+δP2−δS12 with a Li10GeP2S12-type Structure in the Li3PS4–Li4SnS4–Li4SiS4 Quasi-ternary System

Yulong Sun;Kota Suzuki;Satoshi Hori;Masaaki Hirayama

203
Citations
Oxygen substitution effects in Li10GeP2S12 solid electrolyte

Yulong Sun;Kota Suzuki;Kosuke Hara;Satoshi Hori

203
Citations
Synthesis, structure, and conduction mechanism of the lithium superionic conductor Li10+δGe1+δP2−δS12

Ohmin Kwon;Masaaki Hirayama;Kota Suzuki;Yuki Kato

198
Citations
Discharge Performance of All-Solid-State Battery Using a Lithium Superionic Conductor Li10GeP2S12

Yuki Kato;Koji Kawamoto;Ryoji Kanno;Masaaki Hirayama

162
Citations
Direct synthesis of oxygen-deficient Li2MnO3−x for high capacity lithium battery electrodes

Kei Kubota;Takayuki Kaneko;Masaaki Hirayama;Masao Yonemura

144
Citations
Characterization of Electrode/Electrolyte Interface with X-Ray Reflectometry and Epitaxial-Film LiMn2O4 Electrode

Masaaki Hirayama;Noriyuki Sonoyama;Masumi Ito;Machiko Minoura

140
Citations
Epitaxial growth and lithium ion conductivity of lithium-oxide garnet for an all solid-state battery electrolyte

Sangryun Kim;Masaaki Hirayama;Sou Taminato;Ryoji Kanno

136
Citations
Real-time observations of lithium battery reactions—operando neutron diffraction analysis during practical operation

Sou Taminato;Masao Yonemura;Shinya Shiotani;Takashi Kamiyama

136
Citations
Characterization of electrode/electrolyte interface for lithium batteries using in situ synchrotron X-ray reflectometry—A new experimental technique for LiCoO2 model electrode

Masaaki Hirayama;Noriyuki Sonoyama;Takeshi Abe;Machiko Minoura

133
Citations
Synthesis, structure and lithium ionic conductivity of solid solutions of Li 10 (Ge 1-x M x )P 2 S 12 (M = Si, Sn)

Yuki Kato;Yuki Kato;Ryoko Saito;Mitsuru Sakano;Akio Mitsui

130
Citations
Reactions at the electrode/electrolyte interface of all-solid-state lithium batteries incorporating Li–M (M = Sn, Si) alloy electrodes and sulfide-based solid electrolytes

Masamitsu Sakuma;Kota Suzuki;Masaaki Hirayama;Ryoji Kanno

126
Citations
Sulfide solid electrolyte material, battery, and method for producing sulfide solid electrolyte material

Ryoji Kanno;Masaaki Hirayama;Yuki Kato;Koji Kawamoto

117
Citations
Epitaxial growth and electrochemical properties of Li4Ti5O12 thin-film lithium battery anodes

Masaaki Hirayama;Kyungsu Kim;Takeshi Toujigamori;Woosuk Cho

117
Citations