期刊文献+

MnO2@ZnO/C复合材料的制备及电化学性能

Preparation and electrochemical properties of MnO2@ZnO/C composite
在线阅读 下载PDF
导出
摘要 金属有机骨架(metal-organic frameworks,MOFs)化合物是一类由金属离子和通过配位键连接在一起的有机配体组成的晶体材料.作为一种具有立体空间结构的功能材料,凭借其较大的比表面积、较高的孔隙率及品种的多样性,引起了各领域研究者的广泛关注.以b-MnO2纳米棒为模板制备出MnO2@ZIF-8杂化纳米结构,在惰性气氛中分步煅烧处理,得到MnO2@ZnO/C复合材料.ZIF-8中的有机配体由于高温煅烧发生裂解而产生孔道,进而为锂离子的嵌入和脱出提供更多离子传输路径.同时,由于高温裂解伴随着碳的产生,因此当使用这种复合结构物质作为电极材料时,可以提高材料的导电率.MnO2@ZnO/C纳米复合材料的首次放电比容量为1873 mA·h·g^−1,在电流密度为100 mA/g的条件下完成100次充放电后比容量维持在658 mA·h·g^−1,展现出了优良的电化学储能特性. Metal-organic frameworks(MOFs)compounds are compounds formed by bonding metal centers and organic ligands through coordination bonds.As a new type of porous material,it has drawn much attention of researchers in various fields due to its large specific surface area,high porosity and variety of species.In this study,MnO2@ZnO/C hybrids are rationally synthesized by using MnO2@ZIF-8 core-shell nanowires as templates.Owing to its structural and compositional characteristics,namely,the synergistic effects between components and the conductive carbon coating,the resultant MnO2@ZnO/C hybrids exhibit good electrochemical performance as an anode material in Li-ion batteries with a first discharge specific capacity of 1873 mA·h·g^−1 and a specific capacity of 658 mA·h·g^−1 at a current density of 100 mA/g for 100 cycles.
作者 罗志刚 李琦 陈大勇 黄守双 胡张军 陈志文 LUO Zhigang;LI Qi;CHEN Dayong;HUANG Shoushuang;HU Zhangjun;CHEN Zhiwen(School of Environmental and Chemical Engineering,Shanghai University,Shanghai 200444,China)
出处 《上海大学学报(自然科学版)》 CAS CSCD 北大核心 2020年第1期132-142,共11页 Journal of Shanghai University:Natural Science Edition
基金 国家自然科学基金资助项目(11375111,11428410,2017M610244)。
关键词 金属有机骨架化合物 MNO2 ZnO/C 锂离子电池 metal-organic framework compounds MnO2 ZnO/C lithium ion batteries
作者简介 通信作者:陈志文(1962-),男,教授,博士生导师,研究方向为纳米材料的合成与性质等.E-mail:zwchen@shu.edu.cn。
  • 相关文献

参考文献4

二级参考文献218

  • 1Corbet J P, Mignani G. Selected patented cross-coupling reaction technologies. Chem Rev, 2006, 106: 2651-2710.
  • 2Wu C Y, Tang Z, Fan W W, et al. In vivo positron emission tomography (PET) imaging of mesenchymal-epithelial transition (MET) receptor. J Med Chem, 2010, 53: 139-146.
  • 3Pettit G R, Thornhill A, Melody N, et al. Antineoplastic agents. 578. Synthesis of stilstatins 1 and 2 and their water-soluble prodrugs. J Nat Prod, 2009, 72: 380-388.
  • 4Kwak G, Kim S Y, Fujiki M, et al. Versatile and facile preparation of chiral polyacetylene-based gel film and organic anorganic composites. Chem Mater, 2004, 16: 1864-1868.
  • 5Martin R, Buchwald S L. Palladium-catalyzed Suzuki-Miyaura cross-coupling reactions employing dialkylbiaryl phosphine ligands. Accounts Chem Res, 2008, 41: 1461-1473.
  • 6Zhou H C, Long J R, Yaghi O M. Introduction to metal-organic frameworks. Chem Rev, 2012, 112: 673-674.
  • 7Sherry B D, Furstner A. The promise and challenge of iron-catalyzed cross coupling. Accounts Chem Res, 2008, 41: 1500-1511.
  • 8O'Keeffe M. Design of MOFs and intellectual content in reticular chemistry: A personal view. Chem Soc Rev, 2009, 38: 1215-1217.
  • 9Tranchemontagne D J, Mendoza-Cortes J L, O'Keeffe M, et al. Secondary building units, nets and bonding in the chemistry of metal-organic frameworks. Chem Soc Rev, 2009, 38: 1257-1283.
  • 10Perry J J, Perman J A, Zaworotko M J. Design and synthesis of metal-organic frameworks using metal-organic polyhedra as supermolecular building blocks. Chem Soc Rev, 2009, 38: 1400-1417.

共引文献34

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部