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Phosphorus-doped silicon nanorod anodes for high power lithium-ion batteries.

ABSTRACT: Heavy-phosphorus-doped silicon anodes were fabricated on CuO nanorods for application in high power lithium-ion batteries. Since the conductivity of lithiated CuO is significantly better than that of CuO, after the first discharge, the voltage cut-off window was then set to the range covering only the discharge-charge range of Si. Thus, the CuO core was in situ lithiated and acts merely as the electronic conductor in the following cycles. The Si anode presented herein exhibited a capacity of 990 mAh/g at the rate of 9 A/g after 100 cycles. The anode also presented a stable rate performance even at a current density as high as 20 A/g.

SUBMITTER: Yan C

PROVIDER: S-EPMC5301996 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature

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Phosphorus-doped silicon nanorod anodes for high power lithium-ion batteries.

Yan Chao C Liu Qianru Q Gao Jianzhi J Yang Zhibo Z He Deyan D

Beilstein journal of nanotechnology 20170123

Heavy-phosphorus-doped silicon anodes were fabricated on CuO nanorods for application in high power lithium-ion batteries. Since the conductivity of lithiated CuO is significantly better than that of CuO, after the first discharge, the voltage cut-off window was then set to the range covering only the discharge-charge range of Si. Thus, the CuO core was in situ lithiated and acts merely as the electronic conductor in the following cycles. The Si anode presented herein exhibited a capacity of 990 ...[more]

PMID: 28243560

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