Journal
POWDER TECHNOLOGY
Volume 311, Issue -, Pages 200-205Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.powtec.2017.01.063
Keywords
Lithium ion batteries; Anode material; Silicon; Poly-dopamine; graphite oxide
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Funding
- National Science Foundation of China [21473128, 21373154]
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PDA/GO-Si composite is synthesized and tested as anode material for lithium ion batteries. Silicon nanoparticles were first cooperated with graphite oxide (GO) and then embedded into a poly-dopamine (PDA) layer.PDA provides accommodation of volume change and protection to prevent the direct contact of the Si surface with electrolyte during charge/discharge cycling. GO acts as both volume change buffer and conductive support for the electrode. An initial discharge capacity of 2903 mAh.g(-1) was realized. A capacity of 1300 mAh.g(-1) was maintained after 450 cycles. The excellent capacity reversibility and long-term cycling stability of PDA/GO-Si was attributed to the intelligent structure and composition of the synthesized material. (C) 2017 Elsevier B.V. All rights reserved.
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