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Phosphorus-doped porous carbon derived from rice husk as anode for lithium ion batteries

机译：磷掺杂的多孔碳衍生自稻壳作为锂离子电池的阳极

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摘要

We developed a simple and scalable chemical method to obtain phosphorus-doped porous carbon (P-PCRH) by optimized acid treatment and thermal annealing of rice husk with triphenylphosphine (TPP). After doping with phosphorus (doping level of similar to 4.14 at% P), the P-PC-RH electrode increases by almost half the reversible capacity (757 mA h g(-1) after 100 cycles at 100 mA g(-1)) of porous carbon without phosphorus doping (PC-RH-x, x = 2, 4, 6). When cycled at a high current of 2000 mA g(-1), it still delivers a reversible specific capacity of 382 mA h g(-1). The improved electrochemical performance of P-PC-RH is attributed to the synergetic effect of the 3D interconnected porous structure and phosphorus doping, which can maintain perfect electrical conductivity throughout the electrode and enhance electrochemical activities for lithium storage.
机译：我们开发了一种简单且可扩展的化学方法，通过优化的酸处理和具有三苯基膦（TPP）的稻壳的热退火来获得磷掺杂多孔碳（P-PCRH）。 掺杂磷（掺杂水平与％P处于4.14）后，P-PC-rh电极在100 mA g（-1）时在100次循环后增加了几乎一半的可逆容量（757 mA hg（-1）） 没有磷掺杂的多孔碳（Pc-rh-x，x = 2,4,6）。 当在2000 mA g（-1）的高电流下循环时，它仍然可逆特定容量为382 mA H g（-1）。 P-PC-RH的改善的电化学性能归因于3D互连的多孔结构和磷掺杂的协同作用，其能够在整个电极中保持完美的导电性，并增强锂储存的电化学活性。

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  • 来源
    《RSC Advances》 |2015年第68期|共7页
  • 作者

    Wang Jiaqing; Yang Zhenzhong; Pan Fusen; Zhong Xiongwu; Liu Xiaowu; Gu Lin; Yu Yan;

  • 作者单位

    Chinese Acad Sci Univ Sci &

    Technol China Dept Mat Sci &

    Engn Key Lab Mat Energy Convers Hefei 230026 Anhui Peoples R China;

    Chinese Acad Sci Inst Phys Beijing Natl Lab Condensed Matter Phys Beijing 100190 Peoples R China;

    Chinese Acad Sci Univ Sci &

    Technol China Dept Mat Sci &

    Engn Key Lab Mat Energy Convers Hefei 230026 Anhui Peoples R China;

    Chinese Acad Sci Univ Sci &

    Technol China Dept Mat Sci &

    Engn Key Lab Mat Energy Convers Hefei 230026 Anhui Peoples R China;

    Chinese Acad Sci Univ Sci &

    Technol China Dept Mat Sci &

    Engn Key Lab Mat Energy Convers Hefei 230026 Anhui Peoples R China;

    Chinese Acad Sci Inst Phys Beijing Natl Lab Condensed Matter Phys Beijing 100190 Peoples R China;

    Chinese Acad Sci Univ Sci &

    Technol China Dept Mat Sci &

    Engn Key Lab Mat Energy Convers Hefei 230026 Anhui Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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