Yuji Okuyama - Dissemin

Papers authored by Yuji Okuyama

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2024 Yuichi Mikami

, Takehito Goto, Hiroshi Asano, Keita Kasuga, Kosuke Yamauchi

, Tomohiro Kuroha, Yuji Okuyama

Performance of protonic ceramic fuel cells with Ba(Zr,Yb,Co)O3-δ cathodes and the impact of Co contained in cathode on durability

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Yuichi Mikami

, Yuki Sekitani, Kosuke Yamauchi, Tomohiro Kuroha, Yuji Okuyama

Effect of Transition Element Dissolution on Ytterbium-Doped Barium-Zirconate-Based Protonic Ceramic Fuel Cells

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2023 Kazuki Shitara, Akihide Kuwabara

, Yuji Okuyama

, Yoshihiro Yamazaki

Dependence of Proton Diffusivity on Dopant Concentration in Yttrium-Doped Barium Zirconate; First-Principles Study

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Yuji Okuyama

, Keita Kasuga, Masaki Shimomura, Yuichi Mikami, Kosuke Yamauchi, Tomohiro Kuroha, Hirofumi Sumi

Analyzing elementary electrode reactions for protonic ceramic fuel cells by proton/deuteron isotope effect

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Yuichi Mikami, Kosuke Yamauchi, Tomohiro Kuroha, Hiroyuki Shimada

, Yasunobu Mizutani

, Ryuma Matsuda, Masashi Mori, Yuji Okuyama

Durability and Interfacial Elemental Diffusion about BZYb based Protonic Ceramic Fuel Cell

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Tomohiro Kuroha, Kosuke Yamauchi, Yuichi Mikami, Yuji Okuyama

Development of Protonic Ceramic Fuel Cell Using BaZr_0.2Yb_0.8O3_-δ as the Electrolyte

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Yuji Okuyama

, Yoshiaki Harada, Yuichi Mikami, Kosuke Yamauchi, Tomohiro Kuroha, Hiroyuki Shimada

, Yuki Yamaguchi

, Yasunobu Mizutani

Evaluation of Hydrogen Ions Flowing through Protonic Ceramic Fuel Cell Using Ytterbium-Doped Barium Zirconate as Electrolyte

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Kunpeng Li, Takatera Ryogo, Yohei Nagata, Takeru Murakami, Takuto Araki

, Yuji Okuyama

, Masashi Mori

Numerical Analysis of Humidification Condition Effects on Protonic Ceramic Fuel Cell Performance Considering Concentration Overpotential

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Hikaru Takehara, Masaya Nagai

, Masaaki Ashida, Yuji Okuyama

, Yukimune Kani

Phonons Damped by Proton Doping in Barium Zirconate

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This paper is made freely available by the publisher.

Hirofumi Sumi

, Hiroyuki Shimada

, Konosuke Watanabe

, Yuki Yamaguchi, Katsuhiro Nomura

, Yasunobu Mizutani, Yuji Okuyama

External Current Dependence of Polarization Resistances for Reversible Solid Oxide and Protonic Ceramic Cells with Current Leakage

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Hikaru Takehara, Masaya Nagai

, Masaaki Ashida, Yuji Okuyama

, Yukimune Kani

Determining the Atomic Arrangement near the Oxygen Vacancy in Yttrium-Doped Barium Zirconate by Photoluminescence Spectroscopy

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2022 Katsuhiro Nomura

, Hiroyuki Shimada

, Yuki Yamaguchi

, Woosuck Shin

, Yuji Okuyama

, Yasunobu Mizutani

Phase Transitions, Thermal Expansions, Chemical Expansions, and CO₂ Resistances of Ba(Ce_0.8-xZr_xY_0.1Yb_0.1)O_3-δ (x = 0.1, 0.4) Perovskite-Type Proton Conductors

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2021 Masaya Nagai

, Yuto Furutani, Hikaru Takehara, Tomohide Morimoto, Masaaki Ashida, Yuji Okuyama

, Yukimune Kani

Evaluation of the Oxygen Migration Energy in Doped Ceria by Terahertz Spectroscopy

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Kaoru Nakamura

, Masashi Mori, Yuji Okuyama

First-Principles Investigation on the BaM ₂NiO₅ Second Phase in Ba(Zr,M)O₃ Solid Electrolyte in Proton-Conducting Solid Oxide Fuel Cell

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Kunpeng Li, Fumiyasu Suito, Takatera Ryogo, Ota Atsuhito, Takuto Araki

, Yuji Okuyama

, Masashi Mori

Numerical Analysis of the Local Current Efficiency Distribution in a Protonic Ceramic Fuel Cell Considering Gas Concentration Distributions

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Katsuhiro Nomura, Hiroyuki Shimada, Yuki Yamaguchi

, Woosuck Shin, Yuji Okuyama

, Yasunobu Mizutani

Effect of Ce/Zr Ratio on Thermal and Chemical Expansions and CO₂ Resistance of Rare Earth-Doped Ba(Ce,Zr)O₃ Perovskite-Type Proton Conductors

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Naoki Tanimoto, Masaya Nagai

, Masaaki Ashida, Yuji Okuyama

, Yukimune Kani

Assessing the atomic structure of the defect complex in a solid electrolyte by photoluminescence measurements

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2020 Yuji Okuyama

, Tomohiro Kuroha, Yamauchi Kosuke, Yuichi Mikami, Hiroyuki Shimada, Yuki Yamaguchi, Yasunobu Mizutani, Yoshinobu Fujishiro

(Invited) Proton Transport Properties of Yb-Doped BaZrO3 and Its Application to High Efficiency Proton Ceramic Fuel Cell

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Junji Hyodo, Koki Kitabayashi, Kenta Hoshino, Yuji Okuyama

, Yoshihiro Yamazaki

Fast and Stable Proton Conduction in Heavily Scandium‐Doped Polycrystalline Barium Zirconate at Intermediate Temperatures

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Kosuke Yamauchi, Takehito Goto, Tomohiro Kuroha, Yuichi Mikami, Takeshi Terayama, Hiroshi Asano, Seigo Shiraishi, Yoichiro Tsuji, Yuji Okuyama

Electrochemical Analysis of Anode Supported Pcfc with Pseudo Symmetrical Cell

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Papers authored by Yuji Okuyama