title: In situ synthesis of C/Cu/ZnO porous hybrids as anode materials for lithium ion batteries.
abstract: 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.
authors.affiliation: Center for Advanced Energy Materials & Technology Research (AEMT), School of Chemistry and Chemical Engineering, Shandong University , Jinan, 250100, China.
authors.forename: Yuyan
authors.initials: Y
authors.lastname: Wang
authors.forename: Xiaojian
authors.initials: X
authors.lastname: Jiang
authors.forename: Lishan
authors.initials: L
authors.lastname: Yang
authors.forename: Ning
authors.initials: N
authors.lastname: Jia
authors.forename: Yi
authors.initials: Y
authors.lastname: Ding