文献类型：期刊文献

英文题名：Spindle-like Ni-3(HITP)(2) MOFs: Synthesis and Li+ storage mechanism

作者：Zhang, Yi[1];Qiu, Tianpei[1];Jiang, Fei[2];Amzil, Said[1];Wang, Yeji[1];Fu, Hao[1];Yang, Chaofan[1];Fang, Zebo[2];Huang, Junjie[1];Dai, GuoLiang[3]

机构：[1]Shaoxing Univ, Coll Chem & Chem Engn, Shaoxing 312000, Peoples R China;[2]Shaoxing Univ, Math Informat Coll, Shaoxing 312000, Peoples R China;[3]Suzhou Univ Sci & Technol, Sch Chem Biol & Mat Engn, Suzhou 215009, Peoples R China

年份：2021

卷号：556

外文期刊名：APPLIED SURFACE SCIENCE

收录：SCI-EXPANDED(收录号：WOS:000651207000004)、、WOS

基金：This work is supported by the National Natural Science Foundations of China (21875142, 51872186, 21203135), the computing center for Fudan University and Compute Canada are thanked for computer time.

语种：英文

外文关键词：Metal-organic frameworks; Ni-3(HITP)(2); Anode; Lithium ion battery

外文摘要：Metal-organic frameworks (MOFs) with intrinsic pores and redox organic ligands/metallic ions have been viewed as the promising anodes with high capacity in lithium ion batteries (LIBs). However, conventional MOFs faces the disadvantages of poor electron conductivity and weak coordinate bond between organic ligands and central metal ions, inhibiting the application in LIBs. In this study, a conductive MOFs of Ni-3(HITP)(2) has been fabricated by reacting the strong-field ligand of 2,3,6,7,10,11-hexaiminotriphenylene (HITP) with Ni2+. The as-prepared Ni-3(HITP)(2) presents the spindle-like shape that are regular arranged by multi-nano fibers. While utilized in LIBs, Ni-3(HITP)(2) can deliver the reversible capacity of 703 mAh g(-1) at 50 mA g(-1) with almost no capacity fading. According to the theoretical calculation and XPS results, both amino groups in ligand and Ni2+ ions have participated in the redox reaction during the charge/discharge processes. The superior Li+ storage performance of Ni-3(HITP)(2) are contributed by the intercalation capacity of the redox groups and capacitance of the molecular pores.