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Your search keyword '"Toyoki Okumura"' showing total 6 results
Start Over Author "Toyoki Okumura" Journal acs applied energy materials
6 results on '"Toyoki Okumura"'

1. All-Solid-State Batteries with LiCoO2-Type Electrodes: Realization of an Impurity-Free Interface by Utilizing a Cosinterable Li3.5Ge0.5V0.5O4 Electrolyte

Author

Hironori Kobayashi, Tomonari Takeuchi, and Toyoki Okumura

Subjects
Battery (electricity), Materials science, business.industry, Oxide, Energy Engineering and Power Technology, Spark plasma sintering, Electrolyte, chemistry.chemical_compound, chemistry, Impurity, Electrode, Materials Chemistry, Electrochemistry, Chemical Engineering (miscellaneous), Optoelectronics, Thermal stability, Electrical and Electronic Engineering, business, Realization (systems)
Abstract

An impurity-free interface was achieved in an oxide-based all-solid-state battery (ASSB) after cosintering, which was facilitated by an enhanced thermal stability between the layered rock-salt LiMO...

Published
2020
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2. Influence of Active Material Loading on Electrochemical Reactions in Composite Solid-State Battery Electrodes Revealed by Operando 3D CT-XANES Imaging

Author

Takashi Nakamura, Mizuki Tada, Koji Amezawa, Yuta Kimura, Kiyofumi Nitta, Tomoya Uruga, Toyoki Okumura, Nozomu Ishiguro, Yoshiharu Uchimoto, Mahunnop Fakkao, and Oki Sekizawa

Subjects
Materials science, Composite number, Energy Engineering and Power Technology, Electrolyte, Microstructure, Electrochemistry, XANES, Chemical engineering, Composite electrode, Electrode, Materials Chemistry, Chemical Engineering (miscellaneous), Solid-state battery, Electrical and Electronic Engineering
Abstract

Designing composite electrodes with optimal microstructure, composition, and choice of active material (AM) as well as solid electrolyte (SE) is critically important for the development of high-per...

Published
2020
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3. LISICON-Based Amorphous Oxide for Bulk-Type All-Solid-State Lithium-Ion Battery

Author

Tomonari Takeuchi, Tomohiro Saito, Toyoki Okumura, Hironori Kobayashi, Sou Taminato, Yoshinobu Miyazaki, and Michinori Kitamura

Subjects
Fabrication, Materials science, technology, industry, and agriculture, Oxide, Energy Engineering and Power Technology, Spark plasma sintering, Amorphous oxide, Electrolyte, Electrochemistry, Lithium-ion battery, chemistry.chemical_compound, Chemical engineering, chemistry, parasitic diseases, All solid state, Materials Chemistry, Chemical Engineering (miscellaneous), Electrical and Electronic Engineering
Abstract

The use of oxide electrolytes promises the safety of Li-ion batteries but complicates the fabrication of electrochemical interfaces. Herein, we report the facile preparation of ionic-transferable i...

Published
2020
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4. Minimizing the Grain Boundary Resistance of Li-Ion-Conducting Oxide Electrolyte by Controlling Liquid-Phase Formation During Sintering

Author

Tomonari Takeuchi, Sou Taminato, Toyoki Okumura, and Hironori Kobayashi

Subjects
Materials science, Oxide, Energy Engineering and Power Technology, Sintering, Spark plasma sintering, Ionic bonding, 02 engineering and technology, Electrolyte, Conductivity, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, 0104 chemical sciences, Ion, chemistry.chemical_compound, chemistry, Chemical engineering, Materials Chemistry, Electrochemistry, Chemical Engineering (miscellaneous), Grain boundary, Electrical and Electronic Engineering, 0210 nano-technology
Abstract

The commercialization of sintered solid-state devices using oxide electrolyte is hindered by their low total conductivity, which largely originates from high ionic resistance at grain boundaries (G...

Published
2018
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