MOF-Derived Cobalt-Doped ZnO@C Composites as a High-Performance Anode Material for Lithium-Ion Batteries
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- 作者：Hongyun Yue ; Zhenpu Shi ; Qiuxian Wang ; Zhaoxia Cao ; Hongyu Dong ; Yun Qiao ; Yanhong Yin ; Shuting Yang
- 刊名：ACS Applied Materials & Interfaces
- 出版年：2014
- 出版时间：October 8, 2014
- 年：2014
- 卷：6
- 期：19
- 页码：17067-17074
- 全文大小：568K
- ISSN：1944-8252
文摘
Cobalt (Co)-doped MOF-5s (Co-MOF-5s) were first synthesized by a secondary growth method, followed by a heat treatment to yield Co-doped ZnO coated with carbon (CZO@C). Compared with carbon-coated ZnO (ZnO@C), the doping of Co increased the graphitization degree of the carbon on the surface of CZO@C nanoparticles and enhanced the conductivity of the material. The electrochemical properties of the materials were characterized by galvanostatic discharge/charge tests. It was found that the as-synthesized CZO@C composites enabled a reversible capacity of 725 mA h g鈥? up to the 50th cycle at a current density of 100 mA g鈥?, which was higher than that of ZnO@C composites (335 mA h g鈥?).