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首页> 外文期刊>Chemistry: A European journal >Highly Ordered Mesostructured Vanadium Phosphonate toward Electrode Materials for Lithium-Ion Batteries
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Highly Ordered Mesostructured Vanadium Phosphonate toward Electrode Materials for Lithium-Ion Batteries

机译：高度有序的思科磷酸钒磷酸锂离子电池电极材料

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摘要

Highly ordered mesostructured vanadium phosphonates (VP) have been synthesized in the presence of cetyltrimethylammonium bromide (CTAB) as a structure-directing agent. Nitrilotris(methylene)triphosphonic acid (NMPA) and (ammonium/sodium) metavanadate (NH_4VO_3/NaVO_3) have been used for the construction of pore walls. The CTAB templates are removed from the materials by an extraction process without destroying the parent mesostructure. The formation mechanism for the ordered mesoporous structure and its impact on electrochemical application in lithium ion batteries (LIBs) are explained by considering the structural and electrochemical stability of the framework. The results demonstrate that the counter cations (NH_4~+/Na~+) of the metavanadate precursors have a crucial role in stabilizing the mesoporous structure of the mesoporous VP materials. Mesoporous VP materials with highly ordered structure have great applicability as high-performance electrode materials in LIBs due to the advantages of their large contact area with electrolyte and short transport paths for lithium ions. Mesoporous VP electrodes exhibit high reversible specific capacity with superb cycling stability (100 cycles) and excellent retention of capacity (92 %).
机译：高度有序的西对氨基磷酸钒酸钒（VP）在甲烷基三甲基溴化铵（CTAB）存在中已作为结构引导剂合成。氮硅（亚甲基）三膦酸（NMPA）和（铵/钠）偏见（NH_4VO_3 / NAVO_3）已被用于孔壁的构造。 CTAB模板通过提取过程从材料中除去，而不会破坏父腹部结构。通过考虑框架的结构和电化学稳定性，解释了有序中孔结构的形成机制及其对锂离子电池（LIBS）中电化学应用的影响。结果表明，甲烷酸盐前体的反阳离子（NH_4〜+ / NA +）具有至关重要的作用，在稳定中孔VP材料的介孔结构方面具有至关重要的作用。具有高度有序结构的介孔VP材料具有极大的适用性，因为它们的大接触面积与锂离子的电解质和短传输路径的优点是Libs中的高性能电极材料。中孔VP电极表现出高可逆的特定容量，具有精湛的循环稳定性（100次循环）和优异的容量保留（92％）。

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  • 来源
    《Chemistry: A European journal》 |2017年第18期|共9页
  • 作者

    Peng Mei; Malay Pramanik; Jaewoo Lee; Yusuke Ide; Zeid Abdullah Alothman; Jung Ho Kim; Yusuke Yamauchi;

  • 作者单位

    International Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS) 1-1 Namiki Tsukuba Ibaraki 305-0044 (Japan);

    International Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS) 1-1 Namiki Tsukuba Ibaraki 305-0044 (Japan);

    Australian Institute for Innovative Materials (AIIM) University of Wollongong Squires Way North Wollongong NSW 2500 (Australia);

    International Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS) 1-1 Namiki Tsukuba Ibaraki 305-0044 (Japan);

    Chemistry Department College of Science King Saud University Riyadh 11451 (Saudi Arabia);

    International Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS) 1-1 Namiki Tsukuba Ibaraki 305-0044 (Japan);

    International Center for Materials Nanoarchitectonics (MANA) National Institute for Materials Science (NIMS) 1-1 Namiki Tsukuba Ibaraki 305-0044 (Japan);

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 应用化学;
  • 关键词

    cationic surfactants; electrode materials; lithiumion batteries; mesoporous materials; vanadium;

    机译：阳离子表面活性剂;电极材料;锂电池;中孔材料;钒;

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