Metastable amorphous chromium-vanadium oxide nanoparticles with superior performance as a new lithium battery cathode

作     者：Jinzhi Sheng Qidong Li Qiulong Wei Pengfei Zhang Qinqin Wang Fan Lv Qinyou An Wei Chen Liqiang Mai 

作者机构：State Key Laboratory of Advanced Technology for Materials Synthesis and Processing WUT-Harvard Joint Nano Key LaboratoryWuhan University of Technology Wuhan 430070 China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2014年第7卷第11期

页      面：1604-1612页

核心收录：

学科分类：081702[工学-化学工艺] 0808[工学-电气工程] 08[工学] 0817[工学-化学工程与技术] 

基　　金：国家自然科学基金国家杰出青年科学基金 the Fundamental Research Funds for the Central Universities 国家自然科学基金 国家自然科学基金 国家973计划 

主　　题：Cr2V4O13 nanoparticles metastable amorphous structure lithium battery 

摘      要：The main drawbacks of vanadium oxide as a cathode material are its low conductivity, low practical capacity and poor cycling stability. Adding Cr can improve its conductivity and a metastable amorphous state may provide higher capacity and stability. In this work, metastable amorphous Cr-V-O nano- particles have been successfully prepared through a facile co-precipitation reaction followed by annealing treatment. As a cathode material for lithium batteries, the metastable amorphous Cr-V-O nanoparticles exhibit high capacity （260 mAh/g at 100 mA/g between 1.5-4 V）, low capacity loss （more than 80% was retained after 200 cycles at 100 mA/g） and high rate capability （up to 3 A/g）.