M
Masanori Kohyama
Researcher at National Institute of Advanced Industrial Science and Technology
Publications - 74
Citations - 3887
Masanori Kohyama is an academic researcher from National Institute of Advanced Industrial Science and Technology. The author has contributed to research in topics: Grain boundary & Ab initio. The author has an hindex of 28, co-authored 72 publications receiving 3543 citations. Previous affiliations of Masanori Kohyama include United States Department of Energy & Kyoto University.
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Enhanced Electrocatalytic Activity of Pt Subnanoclusters on Graphene Nanosheet Surface
TL;DR: It is found that Pt particles below 0.5 nm in size are formed on GNS, which would acquire the specific electronic structures of Pt, modifying its catalytic activities.
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Visualizing Gas Molecules Interacting with Supported Nanoparticulate Catalysts at Reaction Conditions
Hideto Yoshida,Yasufumi Kuwauchi,Joerg R. Jinschek,Keju Sun,Shingo Tanaka,Masanori Kohyama,Satoshi Shimada,Masatake Haruta,Seiji Takeda +8 more
TL;DR: An aberration-corrected, environmental transmission electron microscopy method was applied to show that adsorbed carbon monoxide molecules caused the 100 facets of a gold nanoparticle to reconstruct during CO oxidation at room temperature, and the energetic favorability of this reconstructed structure was confirmed.
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Analytical TEM study of Pt particle deposition in the proton-exchange membrane of a membrane-electrode-assembly
Tomoki Akita,Akira Taniguchi,Junko Maekawa,Zyun Siroma,Koji Tanaka,Masanori Kohyama,Kazuaki Yasuda +6 more
TL;DR: In this article, a single cell of a PEMFC with PtRu/C anode and Pt/C cathode catalysts after an acceleration test in which constant high potential was applied to the cathode was observed by analytical TEM to investigate the structural changes in electrocatalysts and the proton-exchange membrane (PEM) at a micro-and nano-scale.
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Electronic Structure and Chemical Reactions at Metal–Alumina and Metal–Aluminum Nitride Interfaces
Fumio S. Ohuchi,Masanori Kohyama +1 more
TL;DR: In this paper, the authors decrit une approche theorique et experimentale for l'etude de la structure electronique and des reactions chimiques a l'interface metal-ceramique.
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Origin of intergranular embrittlement of Al alloys induced by Na and Ca segregation: Grain boundary weakening
Guang Hong Lu,Guang Hong Lu,Ying Zhang,Shenghua Deng,Tianmin Wang,Masanori Kohyama,Ryoichi Yamamoto,Feng Liu,Keitaro Horikawa,Motohiro Kanno +9 more
TL;DR: Using a first-principles computational tensile test, this article showed that the ideal tensile strength of an Al grain boundary (GB) is reduced with both Na and Ca GB segregation.