Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 8, Issue 19, Pages 12221-12227Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b03383
Keywords
core-shell; alloy; carbon coating; nanorods; three-dimensional; Lithium-ion battery
Funding
- Guangdong Innovation Team Project [2013N080]
- ShenZhen Peacock Plan [KYPT20141016105435850]
- Shenzhen Science and Technology Innovation Committee [JCYJ20130329175646121, JCYJ20140509093817681]
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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.
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