Nanocomposite Materials for Cathodes and Electrolytes in Lithium Batteries

作     者：F. Croce C.R. Martin B.Scrosati L. Settimi C.Sides 

作者机构：Dipartimento di Scienze del Farmaco Università ‘G.D'Annunzio' 66013 Chieti ItalyChemistry Department University of Florida Gainesville FL USADipartimento di Chimica Università ‘La Sapienza' 00185 Roma ItalyDipartimento di Chimica Università ‘La Sapienza' 00185 Roma ItalyChemistry Department University of Florida Gainesville FL USA 

出 版 物：《复旦学报（自然科学版）》 (Journal of Fudan University：Natural Science)

年 卷 期：2005年第44卷第5期

页      面：662-663页

核心收录：

学科分类：081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 

主　　题：纳米复合材料 锂电池 阴极 电解液 聚合体 

摘      要：Lithium-ion batteries are today the power sources of choice far portable electronics, a multi-billion dollar market[1]. This outstanding success has spawned great international interest in applying this technology to more demanding systems, such as electric of hybrid vehicles[2]. However, to achieve full success in this area,new electrode materials, less expensive, more energetic and more compatible with the environment than the present ones, have to be identified. Accordingly, intense R&D are in progress to reach this goal and few variable alternatives to the original lithium-ion battery design, have been proposed. Particularly interesting is the olivine-structured LiFePO4 cathode developed by Goodenough and co-workers[3], which offers several appealing features, such as high, flat voltage profile and relatively high specific capacity, combined with low cost and low toxicity. However, LiFePO4 has one crucial disadvantage, i.e. its inherently low electric conductivity which reflects in the inability to deliver high capacity at high discharge rates. Such as poor rate capability has been the object of investigation by various groups who have proposed different approaches to overcome it, including carbon coating[4], nano-fibril textures[5], optimized synthesis procedures[6] and foreign metal doping[7].