Výsledky vyhledávání - "TOSHIHARU FUKUNAGA"

Akademický článek

Spin polarization in the phase diagram of a Li–Fe–S system

Autor: Tsuyoshi Takami, Tomonari Takeuchi, Toshiharu Fukunaga

Publikováno v: Scientific Reports, Vol 9, Iss 1, Pp 1-7 (2019)

Abstract Divalent and trivalent states of Fe ions are known to be stable in inorganic compounds. We focus a novel Li x FeS5 cathode, in which the Li content (x) changes from 2 to 10 by an electrochemical technique. As x increases from 2, a Pauli para

Externí odkaz: https://doaj.org/article/6efb2585ffbf4464a461c257a314887a

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Akademický článek

A new Bi0.7Fe1.3O1.5F1.7 phase: Crystal structure, magnetic properties, and cathode performance in fluoride-ion batteries

Autor: Tsuyoshi Takami, Takashi Saito, Takashi Kamiyama, Katsumi Kawahara, Toshiharu Fukunaga, Takeshi Abe

Publikováno v: APL Materials, Vol 8, Iss 5, Pp 051103-051103-6 (2020)

We synthesize a Bi0.7Fe1.3O1.5F1.7 (BFOF) phase via a non-topochemical reaction with a fluorination agent. The crystal structure is refined by Rietveld refinement on the neutron diffraction patterns as a hexagonal lattice in the R3¯ space group, alo

Externí odkaz: https://doaj.org/article/f2a3b7292a5049e28c23f71fbf0faef1

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Akademický článek

Role of the particle size of Fe nanoparticles in the capacity of FeF3 batteries

Autor: Tsuyoshi Takami, Keitaro Matsui, Hiroshi Senoh, Masahiro Shikano, Hikari Sakaebe, Toshiharu Fukunaga

Publikováno v: AIP Advances, Vol 9, Iss 4, Pp 045301-045301-5 (2019)

Fluoride cathode materials that undergo conversion reactions such as FeF3 have attracted increasing interest owing to their high energy density. However, the ability of FeF3 to maintain a high capacity over repeated cycles and the decisive factor dom

Externí odkaz: https://doaj.org/article/42243de007d049e881b3968185e5a186

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Examination of Morphological Changes of Active Materials for Solution-Based Rechargeable Fluoride Shuttle Batteries Using In Situ Electrochemical Atomic Force Microscopy Measurements

Autor: Ken-ichi Okazaki, Hirofumi Nakamoto, Toshiro Yamanaka, Toshiharu Fukunaga, Zempachi Ogumi, Takeshi Abe

Publikováno v: Chemistry of Materials. 34:8280-8288

Batteries using fluoride anions as the carrier might possess high capacity and energy density. Especially, the fluoride shuttle battery (FSB), which uses a fluoride-ion-conductive liquid electrolyte and operates at room temperature, has been reported

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a28b530bd37c957d9b7b761a9754b29d
https://doi.org/10.1021/acs.chemmater.2c01751

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Structural and Electrochemical Properties of Tysonite Ce0.95A0.05F2.95 (A = Mg, Ca, Sr, and Ba): Fast-Fluoride-Ion-Conducting Solid Electrolytes

Autor: Takashi Saito, Toshiya Otomo, Yoshiyuki Morita, Takeshi Abe, Toshiharu Fukunaga, Takashi Kamiyama, Kazuhiro Mori

Publikováno v: The Journal of Physical Chemistry C. 124:18452-18461

All-solid-state fluoride shuttle batteries (FSBs) present endless possibilities for next-generation rechargeable batteries. However, no standard choice for solid electrolytes and electrodes in FSBs...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c7a5ac7d3861568ed7958682abee3058
https://doi.org/10.1021/acs.jpcc.0c05217

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