金属有机骨架材料 ZnCo$_{\textbf{2}}$O$_{\textbf{4}}$/ZnO 中空纳米盒的制备及其电化学性能

doi:10.12066/j.issn.1007-2861.1946

上海大学学报(自然科学版) ›› 2019, Vol. 25 ›› Issue (6): 950-956.doi: 10.12066/j.issn.1007-2861.1946

金属有机骨架材料 ZnCo$_{\textbf{2}}$O$_{\textbf{4}}$/ZnO 中空纳米盒的制备及其电化学性能

郜子明, 董敬余, 陈大勇, 黄守双, 胡张军, 陈志文()

上海大学环境与化学工程学院, 上海 200444

收稿日期:2017-04-26 出版日期:2019-12-30 发布日期:2019-12-31
通讯作者: 陈志文 E-mail:zwchen@shu.edu.cn
基金资助:
国家自然科学基金资助项目(11375111);国家自然科学基金资助项目(11428410);国家自然科学基金资助项目(21601120);上海市自然科学基金资助项目(17ZR1410500)

Preparation and properties of hollow ZnCo$_\textbf{2}$O$_\textbf{4}$/ZnO nanoboxes derived from MOFs as anode materials for lithium ion batteries

Ziming GAO, Jingyu DONG, Dayong CHEN, Shoushuang HUANG, Zhangjun HU, Zhiwen CHEN()

School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China

Received:2017-04-26 Online:2019-12-30 Published:2019-12-31
Contact: Zhiwen CHEN E-mail:zwchen@shu.edu.cn

摘要/Abstract

摘要：

石墨是锂离子电池商用的负极材料, 但其较低的比容量 (372.0 mA$\cdot$h/g) 难以满足不断增长的高容量需求. 因此, 设计和制备高性能负极材料是提升锂离子电池能量密度及性能的关键因素之一. 首先以金属有机框架 ZIF-8 为模板构建出 ZIF-8@ZIF-67 核壳复合结构, 后经简单煅烧处理制备中空 ZnCo$_{2}$O$_{4}$/ZnO 复合纳米材料, 并通过 XRD, SEM, TEM 以及恒流充放电等对其结构、形貌及电化学性能进行研究. 结果表明: 中空 ZnCo$_{2}$O$_{4}$/ZnO 复合纳米材料作为锂离子电池负极材料时表现出良好的电化学性能, 初次放电容量达到 1 536.8 mA$\cdot$h/g; 以 100 mA/g 电流密度充放电 100 次后, 比容量稳定在 780 mAh/g, 显示出优良的电化学储能特性.

关键词: 金属有机骨架材料, 锂离子电池, 负极材料

Abstract:

Graphite is commonly used as an anode material in lithium ion batteries. However, it cannot meet the increasing needs of higher capacity because of low specific capacity (372.0 mA$\cdot$h/g). Thus, rationally synthesis and design of high performance anode materials is a key factor in improving energy density and electrochemistry properties of lithium ion batteries. ZIF-8 was synthesized and encapsulated with ZIF-67 to form core-shell ZIF-8@ZIF-67. This was followed by a subsequent annealing treatment to obtain hollow ZnCo$_2$O$_4$/ZnO nanoboxes. Morphologies and structures of hollow ZnCo$_2$O$_4$/ZnO nanoboxes were characterized with XRD, SEM and TEM. When tested as anode materials for lithium ionbatteries, the hollow ZnCo$_2$O$_4$/ZnO nanoboxes exhibited enhanced performance. Specifically, discharge capacity of 1 536.8 mA$\cdot$h/g was achieved in the first cycle, and retains 780 mA$\cdot $h/g after 100 cycles at a current density of 100 mA/g.

Key words: metal-organic framework (MOF), lithium ion battery, anode material

中图分类号:

O614.24 ⁺1

郜子明, 董敬余, 陈大勇, 黄守双, 胡张军, 陈志文. 金属有机骨架材料 ZnCo$_{\textbf{2}}$O$_{\textbf{4}}$/ZnO 中空纳米盒的制备及其电化学性能[J]. 上海大学学报(自然科学版), 2019, 25(6): 950-956.

Ziming GAO, Jingyu DONG, Dayong CHEN, Shoushuang HUANG, Zhangjun HU, Zhiwen CHEN. Preparation and properties of hollow ZnCo$_\textbf{2}$O$_\textbf{4}$/ZnO nanoboxes derived from MOFs as anode materials for lithium ion batteries[J]. Journal of Shanghai University（Natural Science Edition）, 2019, 25(6): 950-956.

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金属有机骨架材料 ZnCo$_{\textbf{2}}$O$_{\textbf{4}}$/ZnO 中空纳米盒的制备及其电化学性能

Preparation and properties of hollow ZnCo$_\textbf{2}$O$_\textbf{4}$/ZnO nanoboxes derived from MOFs as anode materials for lithium ion batteries

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