New Lithium Iron Pyrophosphate as 3.5 V Class Cathode Material for Lithium Ion Battery

被引：251

作者：

Nishimura, Shin-ichi ^{[1
]}

Nakamura, Megumi ^{[2
]}

Natsui, Ryuichi ^{[2
]}

Yamada, Atsuo ^{[1
]}

机构：

[1] Univ Tokyo, Sch Engn, Dept Chem Syst Engn, Bunkyo Ku, Tokyo 1138656, Japan

[2] Tokyo Inst Technol, Dept Elect Chem, Interdisciplinary Grad Sch Sci & Engn, Midori Ku, Yokohama, Kanagawa 2268502, Japan

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2010年 / 132卷 / 39期

关键词：

Commercial vehicles - Iron compounds - Lithium-ion batteries - Plug-in hybrid vehicles - Solid state reactions - Cathodes - Phosphorus compounds - Silicate minerals - Crystal structure;

D O I：

10.1021/ja106297a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new pyrophosphate compound Li2FeP2O7 was synthesized by a conventional solid-state reaction, and its crystal structure was determined. Its reversible electrode operation at ca. 3.5 V vs Li was identified with the capacity of a one-electron theoretical value of 110 mAh g(-1) even for ca. 1 mu m particles without any special efforts such as nanosizing or carbon coating. Li2FeP2O7 and its derivatives should provide a new platform for related lithium battery electrode research and could be potential competitors to commercial olivine LiFePO4, which has been recognized as the most promising positive cathode for a lithium-ion battery system for large-scale applications, such as plug-in hybrid electric vehicles.

引用

页码：13596 / 13597

页数：2

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