Crystal Chemistry of the Olivine-Type Li ( Mn y Fe1 − y ) PO 4 and ( Mn y Fe1 − y ) PO 4 as Possible 4 V Cathode Materials for Lithium Batteries
作者： Atsuo Yamada , Sai-Cheong Chung
DOI: 10.1149/1.1385377
关键词:
摘要: A potential 4 V cathode material for lithium batteries was investigated. The crystal chemistry of the olivine-type Li(Mn y 2+ Fe 1-y )PO (discharged state) and its delithiated form (Mn 3+ (charged were comparatively studied using X-ray diffraction, Mossbauer spectroscopy, ab initio calculations. strong oxidizer, nitronium tetrafluoroborate, NO 2 BF , used chemical delithiation to obtain . electron/lattice interaction induced by trivalent manganese (3d ) in is highlighted as intrinsic obstacle generating full theoretical capacity (ca. 170 mAh/g) Mn-rich phase (y >0.8), followed an efficient performance optimized 0.6 0.4
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