Core-Shell Sn-Ni-Cu-Alloy@Carbon Nanorods to Array as Three-Dimensional Anode by Nanoelectrodeposition for High-Performance Lithium Ion Batteries.
We report the synthesis of a novel three-dimensional anode based on the core-shell Sn-Ni-Cu-alloy@carbon nanorods which was fabricated by pulse nanoelectrodeposition. Li ion batteries equipped with the three-dimensional anode demonstrated almost 100% capacity retention over 400 cycles at 450 mA g(-1) and excellent rate performance even up to 9000 mA g(-1) for advanced Li-ion battery. Insight of the high performance can be attributed to three key factors, Li-Sn alloys for Li-ion storage, Ni-Cu matrix for the electronic conductive and nanorods structure, and the carbon shell for the electronic/Li-ion conductive and holding stable solid electrolyte interphase (SEI), because these shells always kept stable volumes after extension of initial charge-discharge cycles.
School of Advanced Materials, Peking University, Peking University Shenzhen Graduate School , Shenzhen 518055, China.
Hao
H
Peng
School of Advanced Materials, Peking University, Peking University Shenzhen Graduate School , Shenzhen 518055, China.
Rui
R
Li
School of Advanced Materials, Peking University, Peking University Shenzhen Graduate School , Shenzhen 518055, China.
Jiangtao
J
Hu
School of Advanced Materials, Peking University, Peking University Shenzhen Graduate School , Shenzhen 518055, China.
Wenjun
W
Deng
School of Advanced Materials, Peking University, Peking University Shenzhen Graduate School , Shenzhen 518055, China.
Feng
F
Pan
Lithium-ion battery; alloy; carbon coating; core−shell; nanorods; three-dimensional