标题：In Situ Synthesis of C/Cu/ZnO Porous Hybrids as Anode Materials for Lithium Ion Batteries
作者：Yuyan Wang;Xiaojian Jiang;Lishan Yang
作者机构：[Wang, Y] Center for Advanced Energy Materials and Technology Research (AEMT), School of Chemistry and Chemical Engineering, Shandong University, Jina 更多
通讯作者地址：[Yang, LS]Hunan Normal Univ, Key Lab Chem Biol & Tradit Chinese Med Res, Minist Educ, Coll Chem & Chem Engn, Changsha 410081, Hunan, Peoples R China.
来源：ACS applied materials & interfaces
关键词：in situ synthesis;porous;hybrid;carbon layer;lithium ion battery
摘要：Porous structure and surface modification have been widely studied in applying metal oxide nanomaterials as Li-ion battery anodes for overcoming problems such as poor conductivity and large volume variation. Here, we demonstrate a direct triple-decomposition process for the in situ synthesis of C/Cu/ZnO porous hybrids. In a typical porous structure, 5-10 nm sized ZnO and Cu nanoparticles aggregate randomly and are modified with carbon layers in thickness of 1 nm. Moreover, the resulted hybrid nanostructures show a high and stable specific capacity of 818 mAh g~(-1) at a current rate of 50 mA g~(-1) with almost 100% capacity retention for up to 100 cycles when used an anode material for lithium ion batteries. By combination of the structural analyses and electrochemical behaviors, it could be speculated that the porous structure and the modifications of copper nanoparticles and carbon layers are mainly responsible for the dramatically improved electrochemical performance of ZnO anodes.