Li+/Mg2+ Hybrid-Ion Batteries with Long Cycle Life and High Rate Capability Employing MoS2 Nano Flowers as the Cathode Material
详细信息 查看全文
- 作者：Yanming Ju ; Yuan Meng ; Prof. Yingjin Wei ; Xiaofei Bian ; Qiang Pang ; Dr. Yu Gao ; Prof. Fei Du ; Prof. Bingbing Liu and Prof. Gang Chen
- 刊名：Chemistry - A European Journal
- 出版年：2016
- 出版时间：December 12, 2016
- 年：2016
- 卷：22
- 期：50
- 页码：18073-18079
- 全文大小：1801K
- ISSN：1521-3765
文摘
The demand for large-scale and safe energy storage is increasing rapidly due to the strong push for smartphones and electric vehicles. As a result, Li+/Mg2+ hybrid-ion batteries (LMIBs) combining a dendrite-free deposition of Mg anode and Li+ intercalation cathode have attracted considerable attention. Here, a LMIB with hydrothermal-prepared MoS2 nano flowers as cathode material was prepared. The battery showed remarkable electrochemical properties with a large discharge capacity (243 mAh g−1 at the 0.1 C rate), excellent rate capability (108 mAh g−1 at the 5 C rate), and long cycle life (87.2 % capacity retention after 2300 cycles). Electrochemical analysis showed that the reactions occurring in the battery cell involved Mg stripping/plating at the anode side and Li+ intercalation at the cathode side with a small contribution from Mg2+ adsorption. The excellent electrochemical performance and extremely safe cell system show promise for its use in practical applications.