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首页> 外文期刊>RSC Advances >3D web freestanding RuO2-Co3O4 nanowires on Ni foam as highly efficient cathode catalysts for Li-O-2 batteries
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3D web freestanding RuO2-Co3O4 nanowires on Ni foam as highly efficient cathode catalysts for Li-O-2 batteries

机译：3D在ni泡沫的网络独立式ruo2-co3o4纳米线作为Li-O-2电池的高效的阴极催化剂

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摘要

The mechanism of Li-O-2 batteries is based on the reactions of lithium ions and oxygen, which hold a theoretical higher energy density of approximately 3500 W h kg(-1). In order to improve the practical specific capacity and cycling performance of Li-O-2 batteries, a catalytically active mechanically robust air cathode is required. In this work, we synthesized a freestanding catalytic cathode with RuO2 decorated 3D web Co3O4 nanowires on nickel foam. When the specific capacity was limited at 500 mA h g(-1), the RuO2-Co3O4/NiF had a stable cycling life of up to 122 times. The outstanding performance can be primarily attributed to the robust freestanding Co3O4 nanowires with RuO2 loading. The unique 3D web nanowire structure provides a large surface for Li2O2 growth and RuO2 nanoparticle loading, and the RuO2 nanoparticles help to promote the round trip deposition and decomposition of Li2O2, therefore enhancing the cycling behavior. This result indicates the superiority of RuO2-Co3O4/NiF as a freestanding highly efficient catalytic cathode for Li-O-2 batteries.
机译：Li-O-2电池的机理基于锂离子和氧的反应，其具有约3500WH kg（-1）的理论较高能量密度。为了提高Li-O-2电池的实用特定容量和循环性能，需要一种催化活性的机械稳健的空气阴极。在这项工作中，我们合成了一个独立的催化阴极，用Ruo2装饰的3D网Co3O4纳米线在镍泡沫上。当特定容量限制为500mA H（-1）时，RuO2-Co3O4 / Nif稳定的循环寿命可达122倍。出色的性能主要归因于具有Ruo2负荷的强大的独立CO3O4纳米线。独特的3D幅材纳米线结构为Li2O2生长和RuO2纳米颗粒负载提供了大表面，并且RuO2纳米颗粒有助于促进Li 2 O 2的圆回沉积和分解，因此增强了循环行为。该结果表明RUO2-CO3O4 / NIF的优越性是LI-O-2电池的独立高效催化阴极。

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  • 来源
    《RSC Advances》 |2018年第41期|共7页
  • 作者

    Jiang Zhuo-Liang; Xie Jing; Luo Cong-Shan; Gao Meng-Yang; Guo Huan-Liang; Wei Mo-Han; Zhou Hong-Jun; Sun Hui;

  • 作者单位

    China Univ Petr State Key Lab Heavy Oil Proc Beijing Key Lab Biogas Upgrading Utilizat Inst New Energy Beijing 102249 Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Beijing Key Lab Biogas Upgrading Utilizat Inst New Energy Beijing 102249 Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Beijing Key Lab Biogas Upgrading Utilizat Inst New Energy Beijing 102249 Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Beijing Key Lab Biogas Upgrading Utilizat Inst New Energy Beijing 102249 Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Beijing Key Lab Biogas Upgrading Utilizat Inst New Energy Beijing 102249 Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Beijing Key Lab Biogas Upgrading Utilizat Inst New Energy Beijing 102249 Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Beijing Key Lab Biogas Upgrading Utilizat Inst New Energy Beijing 102249 Peoples R China;

    China Univ Petr State Key Lab Heavy Oil Proc Beijing Key Lab Biogas Upgrading Utilizat Inst New Energy Beijing 102249 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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