NDLI: Scalable fabrication of micron-scale graphene nanomeshes for high-performance supercapacitor applications

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Energy & Environmental Science Vol - 9 Issue - 3

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Scalable fabrication of micron-scale graphene nanomeshes for high-performance supercapacitor applications

Content Provider	Royal Society of Chemistry (RSC)
Author	Wang, Jian Kim, Hyun-Kyung Park, Byeongho Han, Joong Tark Kim, Myeong-Seong Roh, Kwang Chul Jun, Seong Chan Nam, Kyung-Wan Choi, Yeon Jun Zhou, Jigang Chung, Kyung Yoon Yang, Xiao-Qing Lee, Suk Woo Lee, Su Chan Kim, Kwang-Bum Bak, Seong-Min
Copyright Year	2016
Abstract	Graphene nanomeshes (GNMs) with nanoscale periodic or quasi-periodic nanoholes have attracted considerable interest because of unique features such as their open energy band gap, enlarged specific surface area, and high optical transmittance. These features are useful for applications in semiconducting devices, photocatalysis, sensors, and energy-related systems. Here, we report on the facile and scalable preparation of multifunctional micron-scale GNMs with high-density of nanoperforations by catalytic carbon gasification. The catalytic carbon gasification process induces selective decomposition on the graphene adjacent to the metal catalyst, thus forming nanoperforations. The pore size, pore density distribution, and neck size of the GNMs can be controlled by adjusting the size and fraction of the metal oxide on graphene. The fabricated GNM electrodes exhibit superior electrochemical properties for supercapacitor (ultracapacitor) applications, including exceptionally high capacitance (253 F g−1 at 1 A g−1) and high rate capability (212 F g−1 at 100 A g−1) with excellent cycle stability (91% of the initial capacitance after 50 000 charge/discharge cycles). Further, the edge-enriched structure of GNMs plays an important role in achieving edge-selected and high-level nitrogen doping.
Starting Page	1270
Ending Page	1281
Page Count	12
File Format	HTM / HTML PDF
ISSN	17545692
Volume Number	9
Issue Number	4
Journal	Energy & Environmental Science
DOI	10.1039/c5ee03580e
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Graphene Nanotechnology Band gap Specific surface area Photocatalysis Carbon Gasification Electrochemistry Supercapacitor Capacitance Nitrogen Dopant
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Pollution Renewable Energy, Sustainability and the Environment Nuclear Energy and Engineering

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Scalable fabrication of micron-scale graphene nanomeshes for high-performance supercapacitor applications

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Scalable fabrication of micron-scale graphene nanomeshes for high-performance supercapacitor applications

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