MnO2 ultralong nanowires with better electrical conductivity and enhanced supercapacitor performances

Wenyao Li; Qian Liu; Yangang Sun; Jianqing Sun; Rujia Zou; Gao Li; Xianghua Hu; Guosheng Song; Guanxiang Ma; Jianmao Yang; Zhigang Chen; Junqing Hu

doi:10.1039/C2JM33368F

MnO₂ ultralong nanowires with better electrical conductivity and enhanced supercapacitor performances†

Wenyao Li,‡^a Qian Liu,‡^a Yangang Sun,^a Jianqing Sun,^a Rujia Zou,^a Gao Li,^a Xianghua Hu,^a Guosheng Song,^a Guanxiang Ma,^a Jianmao Yang,^a Zhigang Chen^a and Junqing Hu*^a

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^a State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai 201620, China
E-mail: hu.junqing@dhu.edu.cn
Fax: +86-21-6779-2947
Tel: +86-21-6779-2947

Abstract

Single-crystal α-MnO₂ ultralong nanowires (∼40 μm in length, ∼15 nm in diameter), which were synthesized by a simple polyvinylpyrrolidone (PVP) assisted hydrothermal route, exhibited a better electrical conductivity, a highest specific capacitance of 345 F g⁻¹ at a current density of 1 A g⁻¹ with high rate capability (54.7% at 10 A g⁻¹) and good cycling stability.

Journal of Materials Chemistry

MnO₂ ultralong nanowires with better electrical conductivity and enhanced supercapacitor performances†

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MnO₂ ultralong nanowires with better electrical conductivity and enhanced supercapacitor performances

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Journal of Materials Chemistry