Nitrogen-doped MnO2 nanorods as cathodes for high-energy Zn-MnO2 batteries

被引：49
作者：
Huang, Yalan [1 ,2 ]
He, Wanyi [2 ]
Zhang, Peng [1 ]
Lu, Xihong [3 ]
机构：
[1] Dongguan Univ Technol, Guangdong Engn & Technol Res Ctr Adv Nanomat, Sch Environm & Civil Engn, Dongguan 523808, Peoples R China
[2] Sun Yat Sen Univ, MOE Key Lab Bioinorgan & Synthet Chem, Sch Chem, Guangzhou 510275, Guangdong, Peoples R China
[3] Sun Yat Sen Univ, Sch Chem, Key Lab Low Carbon Chem & Energy Conservat Guangd, MOE Key Lab Bioinorgan & Synthet Chem, Guangzhou 510275, Guangdong, Peoples R China
来源：
FUNCTIONAL MATERIALS LETTERS | 2018年 / 11卷 / 06期
关键词：
Nitrogen doping; Zn-MnO2; batteries; MnO2; nanorods; high-energy; HIGH-RATE CAPABILITY; ION BATTERY; MANGANESE OXIDE; STORAGE; ELECTRODEPOSITION; CHEMISTRY;
D O I：
10.1142/S1793604718400064
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The development of manganese dioxide (MnO2) as the cathode for aqueous Zn-MnO2 batteries is hindered by poor capacity. Herein, we propose a high-capacity MnO2 cathode constructed by engineering it with N-doping (N-MnO2) for a high-performance Zn-MnO2 battery. Benefiting from N element doping, the conductivity of N-MnO2 nanorods (NRs) electrode has been improved and the dissolution of the cathode during cycling can be relieved to some extent. The fabricated Zn-N-MnO2 battery based on the N-MnO2 cathode and a Zn foil anode presents an a real capacity of 0.31 mAh cm(-2) at 2 mA cm(-2), together with a remarkable energy density of 154.3 Wh kg(-1) and a peak power density of 6914.7W kg(-1), substantially higher than most recently reported energy storage devices. The strategy of N doping can also bring intensive interest for other electrode materials for energy storage systems.
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页数：5
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