Controllable preparation of vertically standing graphene sheets and their wettability and supercapacitive properties

doi:10.1088/1674-1056/25/9/096106

Abstract

Vertically standing graphene (VSG) sheets have been fabricated by using plasma enhanced chemical vapor deposition (PECVD) method. The lateral size of VSG nanosheets could be well controlled by varying the substrate temperature. The higher temperature usually gives rise to a smaller sheet size. The wettability of VSG films was tuned between hydrophobicity and hydrophilicity by means of oxygen and hydrogen plasma treatment. The supercapacitor electrode made of VSG sheets exhibited an ideal double-layer-capacitor feature and the specific capacitance reached a value up to 9.62 F·m^-2.

Keywords: vertically standing graphene wettability supercapacitor

Received: 12 June 2016
Revised: 04 July 2016
Accepted manuscript online:

PACS:	61.48.Gh	(Structure of graphene)
	61.30.Hn	(Surface phenomena: alignment, anchoring, anchoring transitions, surface-induced layering, surface-induced ordering, wetting, prewetting transitions, and wetting transitions)
	82.47.Uv	(Electrochemical capacitors; supercapacitors)

Fund:

Project supported by the National Basic Research Program of China (Grant No. 2013CBA01603), the National Natural Science Foundation of China (Grant No. 61335006), and the Chinese Academy of Sciences (Grant Nos. 1731300500015 and XDB07030100).

Corresponding Authors: Cheng-Min Shen
E-mail: cmshen@iphy.ac.cn

Cite this article:

Hai-Tao Zhou(周海涛), Ning Yu(喻宁), Fei Zou(邹飞), Zhao-Hui Yao(姚朝晖), Ge Gao(高歌), Cheng-Min Shen(申承民) Controllable preparation of vertically standing graphene sheets and their wettability and supercapacitive properties 2016 Chin. Phys. B 25 096106

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