화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.68, 257-266, December, 2018
DOI10.1016/j.jiec.2018.07.052  Export Citation
Ultrathin graphene-like 2D porous carbon nanosheets and its excellent capacitance retention for supercapacitor
Arthi Gopalakrishnan, and Sushmee Badhulika†
  • Department of Electrical Engineering, Indian Institute of Technology Hyderabad, Hyderabad 502285, India
E-mail:
Here, a controlled green synthesis route involving hydrothermal pre-carbonization cum pyrolysis is reported that converts cucumber into graphene-like carbon nanosheets for supercapacitor application. Transmission electron microscopy analysis reveals the formation of ultra-thin carbon nanosheets with distributed pores. This cucumber derived carbon exhibits high specific capacitance of 143 F g-1 in aqueous electrolyte. The two-electrode symmetric cell exhibits a specific capacitance of 58 F g-1 at high current density, and high capacitance retention of 97% after 1000 cycles. This simple low-cost process involving widely available cucumber as biomass precursor is a promising, commercially viable approach for developing high-performance supercapacitors.
Keywords:Biomass-derived;Cucumber;Carbon nanosheets;Graphene-like;Supercapacitor
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