Dry modification of electrode materials by roller vibration milling at room temperature--颗粒学报PARTICUOLOGY

Li, S., Wang, S., & Xu, B. (2008). Dry modification of electrode materials by roller vibration milling at room temperature. Particuology, 6(5), 383–388. https://doi.org/10.1016/j.partic.2008.06.001

Dry modification of electrode materials by roller vibration milling at room temperature

Shengjuan Li, Shulin Wang^*, Bo Xu

Department of Power Engineering, University of Shanghai for Science and Technology, 516 Jungong Road, Shanghai 200093, China

10.1016/j.partic.2008.06.001

Volume 6, Issue 5, October 2008, Pages 383-388

Received 30 July 2007, Accepted 27 June 2008, Available online 30 August 2008.

E-mail: wangshul@online.sh.cn

Highlights

Abstract

For the first time dry roller vibration milling at room temperature was used to prepare active carbon (AC) nano-particles and to modify MnO₂ powder as electrode materials. In 30 min AC was milled to a mean particle size of 30–50 nm with increased crystallinity and higher specific surface area, predominantly mesoporous and with improved pore diameter distribution. Then, AC nano-particles were incorporated with MnO₂ or bismuth-doped MnO₂ nano-particles synthesized by sol–gel methods to prepare nano-composite electrode materials for studying their electrochemical performance. The AC nano-particles combined with 10 wt.% bismuth-doped MnO₂ nano-particles were found to possess excellent electrochemical property with specific capacitance up to 308 F/g and without obvious attenuation with increasing current. Our method seems to open a new way to improve AC based electrode materials used for clean energy such as super capacitors.

Graphical abstract

Keywords

Active carbon; Roller vibration milling; Electrode materials; Nano-materials; Super-capacitors

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