화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.54, 205-217, October, 2017
DOI10.1016/j.jiec.2017.05.035  Export Citation
Nanostructured 3D zinc cobaltite/nitrogen-doped reduced graphene oxide composite electrode for supercapacitor applications
Sumanta Sahoo, and Jae-Jin Shim†
  • School of Chemical Engineering, Yeungnam University, 280 Daehak-ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea
E-mail:
This paper reports the electrochemical performance of a binder-free supercapacitor electrode based on ZnCo2O4 nanoflakes and N-doped reduced graphene oxide (rGO). The morphology of ZnCo2O4 was tailored by changing the substrate from bare Ni foam (NiF) to rGO-supported NiF and then to N-doped rGO-supported NiF. The N-doped electrode exhibited superior electrochemical performance, i.e., high specific capacitance (1613 F g-1 at 1 A g-1) and excellent cycling stability (97.3% after 5000 cycles). An asymmetric supercapacitor based on this nanohybrid exhibited a high energy density of 36.5 Wh kg-1. This excellent electrochemical performance highlights the potential of this electrode for next-generation supercapacitors.
Keywords:Supercapacitor;Zinc cobaltite;Reduced graphene oxide;N-doped;Specific capacitance;Asymmetric device;N-doped reduced graphene oxide
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