高等学校化学学报 ›› 2018, Vol. 39 ›› Issue (1): 19-24.doi: 10.7503/cjcu20170551

• 研究论文: 无机化学 • 上一篇    下一篇

基于有机磷酸类MOFs前驱体制备Ni2P/C复合材料

徐丹1, 肖珊珊2, 吴攀2, 潘莹1, 陈丽华2, 苏宝连2, 薛铭1(), 裘式纶1   

  1. 1. 吉林大学化学学院, 无机合成与制备化学国家重点实验室, 长春 130012
    2. 武汉理工大学材料复合新技术国家重点实验室, 武汉 430070
  • 收稿日期:2017-08-10 出版日期:2018-01-10 发布日期:2017-12-19
  • 作者简介:联系人简介: 薛 铭, 男, 博士, 副教授, 主要从事无机固体材料化学研究. E-mail:xueming@jlu.edu.cn
  • 基金资助:
    国家自然科学基金(批准号: 21390394, 21571076, 21671155)和化学品安全控制国家重点实验室开放课题(批准号: SKL-038)资助

Synthesis of Organodiphosphonate MOFs-derived Ni2P/C Composite

XU Dan1, XIAO Shanshan2, WU Pan2, PAN Ying1, CHEN Lihua2, SU Baolian2, XUE Ming1,*(), QIU Shilun1   

  1. 1. College of Chemistry, State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, China
    2. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
  • Received:2017-08-10 Online:2018-01-10 Published:2017-12-19
  • Contact: XUE Ming E-mail:xueming@jlu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21390394, 21571076, 21671155) and the Open Projects of State Key Laboratory of Safety and Control for Chemicals, China(No.SKL-038)

摘要:

以镍为金属中心、 对二甲苯二磷酸为有机配体, 构筑了一种有机磷酸类Ni-MOF前驱体, 再经过一步碳化, 原位制备出多孔碳包覆Ni2P纳米颗粒的复合材料. 该复合材料保留了前驱体的片状形貌, 比表面积可达202 m2/g, 复合材料中的Ni2P纳米颗粒具有良好的结晶度, 颗粒均匀且无团聚现象. 在锂离子电池性能测试中, 该Ni2P/C复合结构在缓解材料体积膨胀的同时提高了材料的电子和离子电导率, 进而提高了材料的电化学性能. 在0.2 C的电流密度下, 材料首次充、 放电比容量分别为247和226 mA·h·g-1, 库仑效率可达91.7%, 循环200圈后, 库仑效率接近100%.

关键词: 金属有机骨架, 碳化, Ni2P/C复合材料, 锂离子电池

Abstract:

Ni and organodiphosphonate-based metal organic framework(Ni-MOF) was synthesized under hydrothermal condition using p-xylylenediphosphonate as the organic ligand. Then, Ni-MOF was selected to prepare the amorphous carbon coated Ni2P composite materials by facile method. The composite material retained the lamellate shape of the precursor, and the BET surface area reached 202 m2/g. The Ni2P nanoparticles in the composites had good crystallinity, and the particles were homogeneous and had no reunion. In the performance of lithium ion battery, the Ni2P/C composite structure improved the electron and ion conductivity of the material while reducing the volume expansion of the material, thus improving the electrochemical properties of the material. The first charge and discharge capacity of Ni2P/C composite material were 247 and 226 mA·h·g-1, respectively, coulombic efficiency can reach 91.7%, and the coulombic efficiency reaches 100% after 200 cycles.

Key words: Metal-organic framework, Carbonization, Ni2P/C Composite, Lithium ion battery

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