期刊
ENERGY STORAGE MATERIALS
卷 13, 期 -, 页码 267-273出版社
ELSEVIER
DOI: 10.1016/j.ensm.2018.01.014
关键词
Lithium-ion battery; Anode; Phosphorus; Sheared carbon nanotubes sponge
资金
- National Science Foundation of China [21403139, 51472161, 51671135, 21336003, 51472160, 21676165, 51501107]
- Key Program for the Fundamental Research of the Science and Technology Commission of Shanghai Municipality [15JC1490800, 12JC1406900]
- Program of Shanghai Subject Chief Scientist [17XD1403000]
- Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning
- young teachers in Shanghai colleges and universities [ZZsl15059, ZZslg16063, ZZslg16061]
Phosphorus (P) is considered one of the most attractive anodic materials for lithium-ion batteries (LIBs) owing to its high theoretical specific capacity (2596 mAh g(-1)). Nevertheless, it suffers from intrinsic poor conductivity (10(-12) Sm-1) and large volume expansion (similar to 440%) during the lithiation process, leading to low reaction dynamics and serious capacity decay upon cycling. In this work, red P confined in a three-dimensional (3D) sheared carbon nanotube (SCNT) conductive sponge is prepared, showing high capacity and long cyclability as anodes for LIBs. The resultant 3D P-SCNT composite delivers a stable capacity of 1600 mAh g(-1) at a current density of 0.1 A g(-1) and a reversible high-rate capacity as high as 782 mAh g(-1) at 2 A g(-1) even after 3000 cycles, owing to the robust support of the SCNT framework and stable chemical bonds between the evenly distributed red P and SCNT.
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