Shigeo Mori

Potassium-Ion Conducting Amorphous-Based Chlorides KTaCl6 Prepared via Mechanochemistry

Kota Motohashi, Hamdi Ben Yahia, Takehiro Nakao, Hiroshi Nakajima et autres

Abstract All-solid-state potassium batteries have attracted considerable attention as energy storage devices. The development of suitable ionic conductors has received significant attention for the commercialization of the batteries. Here, we report the potassium-ion conductors KTaCl6 prepared using the mechanochemical method and then …

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Time-Temperature-Transformation (TTT) Diagrams to rationalize the nucleation and quenchability of metastable $α$-Li$_3$PS$_4$

Akira Miura, Woohyeon Baek, Yuta Fujii, Kiyoharu Tadanaga et autres

$α$-Li$_3$PS$_4$ is a promising solid-state electrolyte with the highest ionic conductivity among its polymorphs. However, its formation presents a thermodynamic paradox: the $α$-phase is the equilibrium phase at high temperature and transforms to the stable $γ$-Li$_3$PS$_4$ polymorph when cooled to room temperature; …

Impact of in-plane disorder on the thermal conductivity of AgCrSe 2

Yui Ishii, Jinfeng Zhu, Shintaro Kobayashi, Shogo Kawaguchi et autres

Superionic conductors have recently attracted renewed attention for their use as thermoelectric materials due to their extremely low lattice thermal conductivity. Of central interest is why the superionic conductors exhibit such low thermal conductivity and competing mechanisms have been proposed thus far. …

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Characteristic ferroelectric domains and their dynamic behavior in ordered Pb(Sc1/2Nb1/2)O3

Hiroshi Nakajima, Satoshi Hiroi, Hirofumi Tsukasaki, Yonghong Bing et autres

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A comparison between hollow cone illumination and wavelet transform methods for chromatin fiber orientation measurement

Misa Hayashida, Rinyaporn Phengchat, Marek Malac, Keiko Shimada et autres

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Relationship between Pb ion off-centering and lone pair electrons

Kosuke Kurushima, Hiroshi Nakajima, Takahiro Ogata, Yuki Sakai et autres

Abstract High-pressure synthesized Pb-based perovskites exhibit diverse functional properties. PbCrO 3 , for instance, displays distinctive diffuse scattering and valence skipping, forming Pb 2+ and Pb 4+ ions. However, the spatial distribution of Pb ions in the crystal remains largely unexplored. Here, …

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Electrode/Electrolyte Interphase Formation by Lithium Iodide in a Li2S-Based Positive Electrode for All-Solid-State Batteries

Yushi Fujita, Jiong Ding, Hiroe Kowada, Shigeo Mori et autres

High Resolution Image Download MS PowerPoint Slide Because lithium sulfide (Li 2 S) as an active material is both ionically and electronically insulating, it is typically combined with sulfide solid electrolytes (SSEs) and conductive carbon in all-solid-state batteries to form a composite …

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LiNiO2–Li2MnO3–Li2SO4 Amorphous-Based Positive Electrode Active Materials for All-Solid-State Lithium-Ion Batteries

Daiki Hiraoka, Yushi Fujita, Hirofumi Tsukasaki, Hiroshi Nakajima et autres

All-solid-state lithium secondary batteries are attractive owing to their high safety and energy density. Developing active materials for the positive electrode is important for enhancing the energy density. Generally, Co-based active materials, including LiCoO 2 and Li(Ni 1– x – y Mn …

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High-capacity and long-cycle life Li2S−V2S3−V2O3−LiI bifunctional materials for all-solid-state Li/S batteries

Tatsuki Shigedomi, Yushi Fujita, Daiki Horiuchi, Masato Osaki et autres

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Deterioration Mechanisms Due to Exposing to Humidity-Controlled Air in All Solid-State Battery Revealed By TEM

Shigeo Mori, Hirofumi Tsukasaki

All-solid-state lithium-ion batteries exhibit even higher energy densities owing to their flame retardancy and high thermal stability. Sulfide-based solid electrolytes (SEs) have recently attracted attention due to their high ionic conductivity comparable to that of an organic electrolytic solution [1]. However, their …

MXene Electrodes for All Strain-Free Solid-State Batteries

Kosuke Kawai, Hyobin Lee, Yuki Nomura, Masaki Fujita et autres

All-solid-state batteries with nonflammable inorganic solid electrolytes are the key to addressing the safety issues of lithium-ion batteries with flammable organic liquid electrolytes. However, conventional electrode materials suffer from substantial volume changes during Li + (de)intercalation, leading to mechanical failure of interfaces …

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Fast Sodium-Ion Conducting Amorphous Oxychloride Embedding Nanoparticles

Kota Motohashi, Hirofumi Tsukasaki, Shigeo Mori, Atsushi Sakuda et autres

High Resolution Image Download MS PowerPoint Slide Developing materials with high sodium-ion conductivities is crucial for improving the electrochemical performance of all-solid-state batteries. Halide solid electrolytes are promising owing to their high conductivity, formability, and oxidation stability. However, state-of-the-art sodium-ion-conducting halides are …

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