Search Results - "URUGA, Tomoya"

Operando Characterization of Copper–Zinc–Alumina Catalyst for Methanol Synthesis from Carbon Dioxide and Hydrogen by Ambient-Pressure Hard X‑ray Photoelectron Spectroscopy by Koitaya, Takanori, Yamamoto, Kohei, Uruga, Tomoya, Yokoyama, Toshihiko

“…Operando spectroscopy is a potent tool for characterizing heterogeneous catalysts under working conditions. In this study, ambient-pressure hard X-ray…”
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Operando 3D Visualization of Migration and Degradation of a Platinum Cathode Catalyst in a Polymer Electrolyte Fuel Cell by Matsui, Hirosuke, Ishiguro, Nozomu, Uruga, Tomoya, Sekizawa, Oki, Higashi, Kotaro, Maejima, Naoyuki, Tada, Mizuki

“…The three‐dimensional (3D) distribution and oxidation state of a Pt cathode catalyst in a practical membrane electrode assembly (MEA) were visualized in a…”
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Roles of structural defects in polycrystalline platinum nanowires for enhanced oxygen reduction activity by Zhao, Xiao, Takao, Shinobu, Yoshida, Yusuke, Kaneko, Takuma, Gunji, Takao, Higashi, Kotaro, Uruga, Tomoya, Iwasawa, Yasuhiro

“…Nanocatalysts have uneven reactivity and lively change in reactions, challenging revealing catalytic origins. Phenomenologically, Pt-based nanowires, one of…”
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Oxygen Reduction Reaction Performance Tuning on Pt Nanoparticle/MWCNT Catalysts by Gd Species by Ichihashi, Kentaro, Muratsugu, Satoshi, Matsui, Hirosuke, Higashi, Kotaro, Sekizawa, Oki, Uruga, Tomoya, Tada, Mizuki

“…Fine Pt nanoparticles functionalized with Gd3+ hydroxide/oxide species were prepared on multiwalled carbon nanotubes (MWCNTs) containing polypyrrole matrix…”
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Quick Operando Ambient Pressure Hard X‑ray Photoelectron Spectroscopy for Reaction Kinetic Measurements of Polymer Electrolyte Fuel Cells by Nakamura, Takahiro, Takagi, Yasumasa, Chaveanghong, Suwilai, Uruga, Tomoya, Tada, Mizuki, Iwasawa, Yasuhiro, Yokoyama, Toshihiko

“…We have designed and constructed a quick operando ambient pressure hard X-ray photoelectron spectroscopy (HAXPES) measurement system for the investigations of…”
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Operando Imaging of Ce Radical Scavengers in a Practical Polymer Electrolyte Fuel Cell by 3D Fluorescence CT–XAFS and Depth-Profiling Nano-XAFS–SEM/EDS Techniques by Matsui, Hirosuke, Takao, Shinobu, Higashi, Kotaro, Kaneko, Takuma, Samjeské, Gabor, Uruga, Tomoya, Tada, Mizuki, Iwasawa, Yasuhiro

“…There is little information on the spatial distribution, migration, and valence of Ce species doped as an efficient radical scavenger in a practical polymer…”
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Bottom-up realization of a porous metal-organic nanotubular assembly by Otsubo, Kazuya, Kitagawa, Hiroshi, Wakabayashi, Yusuke, Ohara, Jun, Yamamoto, Shoji, Matsuzaki, Hiroyuki, Okamoto, Hiroshi, Nitta, Kiyofumi, Uruga, Tomoya

“…Nanotubes are generally prepared from their constituent elements at high temperatures, and thus it is difficult to control their size, shape and electronic…”
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3D Operando Imaging and Quantification of Inhomogeneous Electrochemical Reactions in Composite Battery Electrodes by Kimura, Yuta, Tomura, Aina, Fakkao, Mahunnop, Nakamura, Takashi, Ishiguro, Nozomu, Sekizawa, Oki, Nitta, Kiyofumi, Uruga, Tomoya, Okumura, Toyoki, Tada, Mizuki, Uchimoto, Yoshiharu, Amezawa, Koji

“…The performances of electrochemical systems such as solid-state batteries (SSBs) can be severely hindered by the three-dimensional (3D) and mesoscopically…”
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SPring‐8 BL36XU: Synchrotron Radiation X‐Ray‐Based Multi‐Analytical Beamline for Polymer Electrolyte Fuel Cells under Operating Conditions by Uruga, Tomoya, Tada, Mizuki, Sekizawa, Oki, Takagi, Yasumasa, Yokoyama, Toshihiko, Iwasawa, Yasuhiro

“…We designed and constructed a beamline BL36XU at the 8 GeV synchrotron radiation facility SPring‐8 to provide information required for the development of…”
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An Integrated Single-Electrode Method Reveals the Template Roles of Atomic Steps: Disturb Interfacial Water Networks and Thus Affect the Reactivity of Electrocatalysts by Zhao, Xiao, Gunji, Takao, Kaneko, Takuma, Yoshida, Yusuke, Takao, Shinobu, Higashi, Kotaro, Uruga, Tomoya, He, Wenxiang, Liu, Jianguo, Zou, Zhigang

“…A method enabling the accurate and precise correlation between structures and properties is critical to the development of efficient electrocatalysts. To this…”
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Tungsten species in natural ferromanganese oxides related to its different behavior from molybdenum in oxic ocean by Kashiwabara, Teruhiko, Takahashi, Yoshio, Marcus, Matthew A., Uruga, Tomoya, Tanida, Hajime, Terada, Yasuko, Usui, Akira

“…The tungsten (W) species in marine ferromanganese oxides were investigated by wavelength dispersive XAFS method. We found that the W species are in distorted…”
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Visualization Analysis of Pt and Co Species in Degraded Pt3Co/C Electrocatalyst Layers of a Polymer Electrolyte Fuel Cell Using a Same-View Nano-XAFS/STEM-EDS Combination Technique by Takao, Shinobu, Sekizawa, Oki, Higashi, Kotaro, Samjeské, Gabor, Kaneko, Takuma, Sakata, Tomohiro, Yamamoto, Takashi, Uruga, Tomoya, Iwasawa, Yasuhiro

“…In order to obtain a suitable design policy for the development of a next-generation polymer electrolyte fuel cell, we performed a visualization analysis of Pt…”
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Pt–Co/C Cathode Catalyst Degradation in a Polymer Electrolyte Fuel Cell Investigated by an Infographic Approach Combining Three-Dimensional Spectroimaging and Unsupervised Learning by Tan, Yuanyuan, Matsui, Hirosuke, Ishiguro, Nozomu, Uruga, Tomoya, Nguyen, Duong-Nguyen, Sekizawa, Oki, Sakata, Tomohiro, Maejima, Naoyuki, Higashi, Kotaro, Dam, Hieu Chi, Tada, Mizuki

“…Catalyst degradation at the cathode of a membrane electrode assembly (MEA) remains a critical issue for practical polymer electrolyte fuel cell (PEFC)…”
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Surface Freezing of Cetyltrimethylammonium Chloride–Hexadecanol Mixed Adsorbed Film at Dodecane–Water Interface by Sakamoto, Hiromu, Masunaga, Akihiro, Takiue, Takanori, Tanida, Hajime, Uruga, Tomoya, Nitta, Kiyofumi, Prause, Albert, Gradzielski, Michael, Matsubara, Hiroki

“…The surface freezing transition of a mixed adsorbed film containing cetyltrimethylammonium chloride (CTAC) and n-hexadecanol (C16OH) was utilized at the…”
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Key Factors Affecting the Performance and Durability of Cathode Electrocatalysts in Polymer Electrolyte Fuel Cells Characterized by In Situ Real Time and Spatially Resolved XAFS Techniques by Tada, Mizuki, Uruga, Tomoya, Iwasawa, Yasuhiro

“…The account article treats with the characterizations of the structural and electronic transformations of Pt/C, Pt 3 Co/C, and Pt 3 Ni/C cathode…”
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The Relationship between the Active Pt Fraction in a PEFC Pt/C Catalyst and the ECSA and Mass Activity during Start-Up/Shut-Down Degradation by in Situ Time-Resolved XAFS Technique by Higashi, Kotaro, Samjeské, Gabor, Takao, Shinobu, Kaneko, Takuma, Sekizawa, Oki, Uruga, Tomoya, Iwasawa, Yasuhiro

“…Transient-response kinetics of the transformations (six elementary steps) of the Pt valence, coordination number of Pt–Pt bonds, and coordination number of…”
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Dynamic Behavior of Rh Species in Rh/Al2O3 Model Catalyst during Three-Way Catalytic Reaction: An Operando X‑ray Absorption Spectroscopy Study by Asakura, Hiroyuki, Hosokawa, Saburo, Ina, Toshiaki, Kato, Kazuo, Nitta, Kiyofumi, Uera, Kei, Uruga, Tomoya, Miura, Hiroki, Shishido, Tetsuya, Ohyama, Junya, Satsuma, Atsushi, Sato, Katsutoshi, Yamamoto, Akira, Hinokuma, Satoshi, Yoshida, Hiroshi, Machida, Masato, Yamazoe, Seiji, Tsukuda, Tatsuya, Teramura, Kentaro, Tanaka, Tsunehiro

“…The dynamic behavior of Rh species in 1 wt% Rh/Al2O3 catalyst during the three-way catalytic reaction was examined using a micro gas chromatograph, a NO x…”
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Understanding the phase-change mechanism of rewritable optical media by Kolobov, Alexander V, Fons, Paul, Frenkel, Anatoly I, Ankudinov, Alexei L, Tominaga, Junji, Uruga, Tomoya

“…Present-day multimedia strongly rely on rewritable phase-change optical memories. We demonstrate that, different from the current consensus, Ge(2)Sb(2)Te(5),…”
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Operando Observation of Sulfur Species Poisoning Polymer Electrolyte Fuel Cell Studied by Near Ambient Pressure Hard X‑ray Photoelectron Spectroscopy by Yu, Liwei, Takagi, Yasumasa, Nakamura, Takahiro, Sakata, Tomohiro, Uruga, Tomoya, Tada, Mizuki, Iwasawa, Yasuhiro, Masaoka, Shigeyuki, Yokoyama, Toshihiko

“…Operando S 1s hard X-ray photoelectron spectroscopic (HAXPES) measurements were performed to observe sulfur species poisoning polymer electrolyte fuel cell…”
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Factors controlling electron transport properties in transparent amorphous oxide semiconductors by Hosono, Hideo, Nomura, Kenji, Ogo, Youichi, Uruga, Tomoya, Kamiya, Toshio

“…Metal cation species and post-annealing treatments were extracted as the primary factors affecting the electron transport properties in transparent amorphous…”
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