Poly-dopamine coated graphite oxide/silicon composite as anode of lithium ion batteries

Poly-dopamine coated graphite oxide/silicon composite as anode of lithium ion batteries
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聚多巴胺涂层氧化石墨/硅复合材料作为锂离子电池负极

DOI:
10.1016/j.powtec.2017.01.063
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发表时间:
2017-04
期刊:
影响因子:
5.2
通讯作者:
Pan Mu
Pan Mu
中科院分区:
工程技术2区
文献类型:
--
作者:
Wu Jing;Tu Wenmao;Zhang Yong;Guo Binlin;Li Shanshan;Zhang Yue;Wang Yadong;Pan Mu

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合成并测试了 PDA/GO-Si 复合材料作为锂离子电池负极材料的性能。硅纳米粒子首先与氧化石墨(GO)配合,然后嵌入聚多巴胺(PDA)层中。PDA提供体积变化的调节和保护,以防止在充电/放电循环过程中硅表面与电解质直接接触。 GO 既充当体积变化缓冲器又充当电极的导电支撑。首次放电容量达到2903mAh•g−1。 450次循环后容量仍保持在1300mAh•g−1。 PDA/GO-Si 优异的容量可逆性和长期循环稳定性归因于合成材料的智能结构和组成。
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− 1was realized. A capacity of 1300 mAh•g− 1was 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.
采用纳米级系统工程的高容量硅基锂电池阳极。
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发表时间: 2013-11-01
期刊: NANO LETTERS
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