中国物理B ›› 2016, Vol. 25 ›› Issue (9): 96106-096106.doi: 10.1088/1674-1056/25/9/096106

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

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)   

  1. 1. Chinese Aeronautical Establishment, Beijing 100012, China;
    2. School of Aerospace Engineering, Tsinghua University, Beijing 100084, China;
    3. Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2016-06-12 修回日期:2016-07-04 出版日期:2016-09-05 发布日期:2016-09-05
  • 通讯作者: Cheng-Min Shen E-mail:cmshen@iphy.ac.cn
  • 基金资助:

    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).

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

Hai-Tao Zhou(周海涛)1, Ning Yu(喻宁)2, Fei Zou(邹飞)1, Zhao-Hui Yao(姚朝晖)2, Ge Gao(高歌)1, Cheng-Min Shen(申承民)3   

  1. 1. Chinese Aeronautical Establishment, Beijing 100012, China;
    2. School of Aerospace Engineering, Tsinghua University, Beijing 100084, China;
    3. Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2016-06-12 Revised:2016-07-04 Online:2016-09-05 Published:2016-09-05
  • Contact: Cheng-Min Shen E-mail:cmshen@iphy.ac.cn
  • Supported by:

    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).

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摘要：

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.

关键词: vertically standing graphene, wettability, supercapacitor

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.

Key words: vertically standing graphene, wettability, supercapacitor

中图分类号:  (Structure of graphene)

  • 61.48.Gh
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)