Ultrathin, transparent, and flexible graphene films for supercapacitor application
Ultrathin, transparent, and flexible graphene films for supercapacitor application
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DOI：
10.1063/1.3455879
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发表时间：
2010-06-21
影响因子：
4
通讯作者：
Chen, Zhongwei
中科院分区：
文献类型：
--
作者：
Yu, Aiping;Roes, Isaac;Chen, Zhongwei
本研究报告了用于超级电容器应用的透明石墨烯膜的制备。通过扫描电子显微镜和透射电子显微镜研究了薄膜的表面形貌，揭示了石墨烯片之间具有紧密接触的非常均匀的表面。电化学表征显示出接近理想的双电层电容行为。由充放电分析获得的电容对于约25 nm的膜为135 F/g，其在550 nm处具有70%的透射率，并且在2 M KCl电解质中具有7200 W/kg的高功率密度。(C)2010年美国物理学会。[doi：10.1063/1.3455879]
This study reports the preparation of ultrathin, transparent graphene films for use in supercapacitor applications. The surface morphology of the films was investigated by scanning electron microscopy and transmission electron microscopy, revealing a very homogeneous surface with intimate contact between graphene sheets. Electrochemical characterization demonstrated nearly ideal electrical double layer capacitive behavior. The capacitance obtained from charge-discharge analysis is 135 F/g for a film of approximately 25 nm which has a transmittance of 70% at 550 nm and a high power density of 7200 W/kg in 2 M KCl electrolyte. (C) 2010 American Institute of Physics. [doi:10.1063/1.3455879]