期刊
JOURNAL OF ENERGY CHEMISTRY
卷 23, 期 3, 页码 315-323出版社
ELSEVIER
DOI: 10.1016/S2095-4956(14)60153-4
关键词
silicon; carbon; anode materials; lithium-ion batteries; template method; carbon thermal vapor deposition
资金
- State Key Basic Research Program of PRC [2011CB935903]
- National Natural Science Foundation of China [20925312]
- Shanghai Science Technology Committee [13JC1407900]
In the present work, an interconnected sandwich carbou/Si-SiO2/carbon nanospheres composite was prepared by template method and carbon thermal vapor deposition (TVD). The carbon conductive layer can not only efficiently improve the electronic conductivity of Si-based anode, but also play a key role in alleviating the negative effect from huge volume expansion over discharge/charge of Si-based anode. The resulting material delivered a reversible capacity of 1094 mAh/g, and exhibited excellent cycling stability. It kept a reversible capacity of 1050 mAh/g over 200 cycles with a capacity retention of 96%.
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