Direct Anodic Exfoliation of Graphite onto High-density Aligned Graphene for Large Capacity Supercapacitors Nano Energy, Available online 12 March 2017, Pages Liangsheng Hu, Xiang Peng, Yong Li, Lei Wang, Kaifu Huo, Lawrence Yoon Suk Lee, Kwok-Yin Wong, Paul K. Chu
Graphical abstractA facile and efficient technique for the preparation of high-density and vertically oriented graphene nanosheets (VOGNs) directly on graphite plates is described. The VOGNs are obtained by electrochemical anodization of graphite producing aligned graphene oxide (G@GO) that adheres strongly to the graphite substrate (G@rGO) and reduction. The integrated supercapacitors composed of the G@rGO electrodes boast excellent rate performance and long-term cycling stability such as high volumetric capacitance of 3.9Fcm-3 in 6M KOH.
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