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Effects of polypyrrole on the performance of nickel oxide anode materials for rechargeable lithium-ion batteries

机译:聚吡咯对可再充电锂离子电池镍氧化物负极材料性能的影响

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摘要

Nickel oxide-polypyrrole (NiO-PPy) composites for lithium-ion batteries were prepared by a chemical polymerization method with sodium p-toluenesulfonate as the dopant, Triton-X as the surfactant, and FeCl_3 as the oxidant. The new composite material was characterized by Raman spectroscopy, thermogravimetric analysis, scanning electron microscopy, and field-emission scanning electron microscopy. Nanosize conducting PPy particles with a cauliflower-like morphology were uniformly coated onto the surface of the NiO powder. The electrochemical results were improved for the NiO-PPy composite compared with the pristine NiO. After 30 cycles, the capacities of the NiO and the NiO-PPy composite were about 119 and 436 mAh•g~(-1), respectively, indicating that the electrochemical performance of the composite was significantly improved.
机译:以对甲苯磺酸钠为掺杂剂,Triton-X为表面活性剂,FeCl_3为氧化剂,通过化学聚合法制备了锂离子电池用氧化镍-聚吡咯(NiO-PPy)复合材料。通过拉曼光谱,热重分析,扫描电子显微镜和场发射扫描电子显微镜对新型复合材料进行了表征。将具有菜花状形态的纳米级导电PPy颗粒均匀地涂覆在NiO粉末的表面上。与原始NiO相比,NiO-PPy复合材料的电化学结果得到了改善。 30次循环后,NiO和NiO-PPy复合材料的容量分别约为119和436 mAh•g〜(-1),表明该复合材料的电化学性能得到了显着改善。

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  • 来源
    《Journal of Materials Research》 |2011年第7期|p.860-866|共7页
  • 作者单位

    Institute for Superconducting and Electronic Materials, ARC Center of Excellence for Electromaterials Science,University of Wollongong, Wollongong, New South Wales 2519, Australia,Department of Physical Sciences, Faculty of Science, University Malaysia Terengganu, 21030 Kuala Terengganu, Malaysia;

    Institute for Superconducting and Electronic Materials, ARC Center of Excellence for Electromaterials Science,University of Wollongong, Wollongong, New South Wales 2519, Australia;

    Institute for Superconducting and Electronic Materials, ARC Center of Excellence for Electromaterials Science,University of Wollongong, Wollongong, New South Wales 2519, Australia;

    Institute for Superconducting and Electronic Materials, ARC Center of Excellence for Electromaterials Science,University of Wollongong, Wollongong, New South Wales 2519, Australia;

    Institute for Superconducting and Electronic Materials, ARC Center of Excellence for Electromaterials Science,University of Wollongong, Wollongong, New South Wales 2519, Australia;

    Institute for Superconducting and Electronic Materials, ARC Center of Excellence for Electromaterials Science,University of Wollongong, Wollongong, New South Wales 2519, Australia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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