Lithium cobaltate:a novel host material enables high-rate and stable lithium-sulfur batteries

作     者：Wen Ma Qing Xu 

作者机构：GRINM Bohan (Beijing) Publisher Co.Ltd.GRINM Group Co.Ltd. Subinstitute of Standardization Theory and Strategy China National Institute of Standardization 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2018年第37卷第11期

页      面：929-935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] 

主　　题：Lithium cobaltate Polysulfides dissolution Electrochemical properties Lithium-sulfur batteries 

摘      要：Element sulfur is highly attractive due to their potentially low cost and environmental ***, polysulfides dissolution hinders the lithiumsulfur(Li-S) batteries toward commercialization. To overcome these issues, in this work, lithium cobaltate as a commercial material, for the first time, was devoted to engineering the electrode structure and composition to improve the performance. When incorporated with 80% sulfur powder, the synergetic effects of cobalt atoms and interlayer spaces effectively enable the production of Li-S batteries with a relatively high discharge capacity of 1420 mAh·g-1at the low surface current density of 1 mA·cm-2and stable capacity retention of 650 mAh·g-1at high surface current density of 6 mA·cm-2. The introduction of lithium cobaltate is a viable approach for successfully developing practical Li-S batteries.