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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Sn-Decorated red P entangled in CNTs as anodes for advanced lithium ion batteries
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Sn-Decorated red P entangled in CNTs as anodes for advanced lithium ion batteries

机译：SN装饰的红色P纠缠在CNT中作为高级锂离子电池的阳极

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摘要

Phosphorus (P) is an appealing electrode material for lithium ion batteries owing to its high theoretical capacity. In particular, red P has attracted considerable research attention due to its commercial availability, low cost and easy handling. In this study, red P was combined with Sn particles and then interwoven into a carbon nanotube network (P@Sn@CNT). The electronic conductivity can be enhanced by the dual effect of the conductive CNT framework and decorated Sn particles. The Li storage capability of red P and Sn can be boosted with the synergistic effect, both contributing to the overall capacity of the composite. The P@Sn@CNT composite exhibits excellent lithium storage performance, delivering a capacity of 1197 mA h g(-1) after 200 cycles at 0.2 A g(-1). Outstanding cyclic stability and high rate capability are also exhibited, with a capacity retention of 79% in 200 cycles and a capacity of 911 mA h g(-1) at 10 A g(-1). The ex situ X-ray diffraction and X-ray photoelectron spectroscopic study also reveals the reversible lithiation mechanism of the P@Sn@CNT composite, forming Li3P and Li22Sn5. The systematic investigation on the low-cost P@Sn@CNT sheds light on the development of high-performance red P-based lithium-ion batteries for real applications.
机译：由于其高理论能力，磷（P）是锂离子电池的吸引力材料。特别是，由于其商业可用性，低成本和易于处理，红P引起了相当大的研究。在该研究中，红色P与Sn颗粒组合，然后交织在碳纳米管网络中（P @ SN @ CNT）。通过导电CNT框架的双重效应和装饰的Sn颗粒可以增强电子电导率。红色P和Sn的锂储存能力可以提高协同效应，两者都有助于复合材料的整体能力。 P @ SN @ CNT复合材料表现出优异的锂储存性能，在0.2Ag（-1）时在200次循环后输送1197 mA H（-1）的容量。还表现出优异的循环稳定性和高速率能力，其容量保持在200次循环中79％，911mA H（-1）的容量为10 A g（-1）。 EX原位X射线衍射和X射线光电子光谱研究还揭示了P @ SN @ CNT复合材料的可逆性锂化机制，形成Li3P和Li22Sn5。对低成本P @ SN @ CNT脱落的系统调查揭示了高性能红色P型锂离子电池的实际应用。

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    Sun Li; Zhang Yuanxing; Gong Yi; Si Haochen; Shi Yan; Fan Kaifeng; Sun Chao; Zhang Yihe;

  • 作者单位

    China Univ Geosci Sch Mat Sci &

    Technol Natl Lab Mineral Mat Beijing Key Lab Mat Utilizat Nonmetall Minerals &

    Beijing 100083 Peoples R China;

    China Univ Geosci Sch Mat Sci &

    Technol Natl Lab Mineral Mat Beijing Key Lab Mat Utilizat Nonmetall Minerals &

    Beijing 100083 Peoples R China;

    China Univ Geosci Sch Mat Sci &

    Technol Natl Lab Mineral Mat Beijing Key Lab Mat Utilizat Nonmetall Minerals &

    Beijing 100083 Peoples R China;

    China Univ Geosci Sch Mat Sci &

    Technol Natl Lab Mineral Mat Beijing Key Lab Mat Utilizat Nonmetall Minerals &

    Beijing 100083 Peoples R China;

    China Univ Geosci Sch Mat Sci &

    Technol Natl Lab Mineral Mat Beijing Key Lab Mat Utilizat Nonmetall Minerals &

    Beijing 100083 Peoples R China;

    China Univ Geosci Sch Mat Sci &

    Technol Natl Lab Mineral Mat Beijing Key Lab Mat Utilizat Nonmetall Minerals &

    Beijing 100083 Peoples R China;

    China Univ Geosci Sch Mat Sci &

    Technol Natl Lab Mineral Mat Beijing Key Lab Mat Utilizat Nonmetall Minerals &

    Beijing 100083 Peoples R China;

    China Univ Geosci Sch Mat Sci &

    Technol Natl Lab Mineral Mat Beijing Key Lab Mat Utilizat Nonmetall Minerals &

    Beijing 100083 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;无机化学;
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