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Yuan, Demao; Cheng, Jianli; Qu, Guoxing; Li, Xiaodong; Ni, Wei; Wang, Bin; Liu, Heng
Journal of power sources, 01/2016, Letnik: 301Journal Article
Amorphous red phosphorus/carbon nanotubes (ARPC) composites are prepared by planetary ball-milling technique with the pre-milling red phosphorus processes, consisting of uniformly distributing amorphous red phosphorus embedding in a three-dimensional conductive scaffold of interconnected carbon nanotubes (CNTs). Combining the three-dimensional conductive network with the amorphous red phosphorus can not only alleviate the volumetric change in the charging/discharging processes, but also provide conductive network for electron transport and dramatically improve the specific capacity, cycling stability and rate capability of the composite electrode. The ARPC composites deliver a high initial charge capacity of 2133.4 mAh g−1 at a current density of 0.05 C and maintain a reversible capacity of 998.5 mAh g−1 with a high Coulombic efficiency of approximately 99% after 50 cycles. Meanwhile, the composite can maintain high specific capacities of 1993.8 mAh g−1, 1896.9 mAh g−1, 1546.8 mAh g−1 and 816.6 mAh g−1 at 0.01 C, 0.05 C, 0.1 C and 0.5 C, respectively. Compared with that of the ball-milled amorphous red phosphorus with or without CNTs, the pre-milled ARPC composites show much better electrochemical performances. •Amorphous red phosphorus/carbon nanotubes (ARPC) composites are produced by ball-milling.•Amorphous red phosphorus is embedded in a carbon nanotubes scaffold.•ARPC composites anode shows good cycling performance with high specific capacity.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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