A novel cationic-ordering fluoro-polyanionic cathode LiV0.5Fe0.5PO4F and its single phase Li+ insertion/extraction behaviour

Zhen-Dong Huang; Yuki Orikasa; Titus Masese; Kentaro Yamamoto; Takuya Mori; Taketoshi Minato; Yoshiharu Uchimoto

doi:10.1039/C3RA44094J

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A novel cationic-ordering fluoro-polyanionic cathode LiV_0.5Fe_0.5PO₄F and its single phase Li⁺ insertion/extraction behaviour†

Zhen-Dong Huang,*^a Yuki Orikasa,^a Titus Masese,^a Kentaro Yamamoto,^a Takuya Mori,^a Taketoshi Minato^b and Yoshiharu Uchimoto^a

Author affiliations

* Corresponding authors

^a Graduate School of Human and Environmental Studies, Kyoto University, Yoshida-nihonmatsu-Cho, Sakyo-ku, Kyoto 606-8501, Japan
E-mail: hzd0506127@gmail.com
Tel: +81 75 7537903

^b Office of Society-Academia Collaboration for Innovation, Kyoto University, Gokasho, Uji 611-0011, Japan

Abstract

A novel fluoro-polyanionic cathode LiV_0.5Fe_0.5PO₄F is synthesized via a wet ball-milling-assisted solid state method. Cationic ordering of V³⁺ and Fe³⁺ results in a single phase behaviour over the lithium composition range of Li_1±xV_0.5Fe_0.5PO₄F (0 < x < 0.5) as revealed by X-ray diffraction analysis and electrochemical tests. This finding offers a versatile strategy of introducing single-phase behaviour in promising fluoro-polyanionic compounds exhibiting two-phase mechanisms.

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Article information

DOI: https://doi.org/10.1039/C3RA44094J
Article type: Communication
Submitted: 01 Aug 2013
Accepted: 04 Oct 2013
First published: 04 Oct 2013

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RSC Adv., 2013,3, 22935-22939

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A novel cationic-ordering fluoro-polyanionic cathode LiV_0.5Fe_0.5PO₄F and its single phase Li⁺ insertion/extraction behaviour

Z. Huang, Y. Orikasa, T. Masese, K. Yamamoto, T. Mori, T. Minato and Y. Uchimoto, RSC Adv., 2013, 3, 22935 DOI: 10.1039/C3RA44094J

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