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

作者：Huang Zhen Dong^*; Orikasa Yuki; Masese Titus; Yamamoto Kentaro; Mori Takuya; Minato Taketoshi; Uchimoto Yoshiharu

来源：RSC Advances, 2013, 3(45): 22935-22939.

DOI：10.1039/c3ra44094j

A novel fluoro-polyanionic cathode LiV0.5Fe0.5PO4F 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 Li1 +/- xV0.5Fe0.5PO4F (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.

• 出版日期2013