Cathode properties of pyrophosphates for rechargeable lithium batteries

被引：63
|
作者：
Uebou, Y [1 ]
Okada, S [1 ]
Egashira, M [1 ]
Yamaki, JI [1 ]
机构：
[1] Kyushu Univ, Inst Adv Mat Study, Fukuoka 8168580, Japan
来源：
SOLID STATE IONICS | 2002年 / 148卷 / 3-4期
关键词：
pyrophosphates; cathode-active materials; lithium secondary batteries;
D O I：
10.1016/S0167-2738(02)00069-3
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Two rechargeable pyrophosphates, LiVP2O7 and TiP2O7, were synthesized by a solid state reaction, and the cathode properties were investigated. The structures were characterized by powder X-ray Rietveld refinement. LiVP2O7 was isostructural with P2(1) monoclinic LiFeP2O7 and TiP2O7 was isostructural with Pa3 cubic ZrV2O7. Lithium cells using LiVP2O7 cathodes showed that approximately 0.5 Li per unit could be reversibly deintercalated from LiVP2O7 at 4.1 V vs. Li/Li+. On the other hand, 0.6 Li per unit could be reversibly intercalated into TiP2O7 at 2.6 V vs. Li/Li+. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：323 / 328
页数：6
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