title: Porous NiCo2O4 nanosheets/reduced graphene oxide composite: facile synthesis and excellent capacitive performance for supercapacitors.
abstract: A composite with porous NiCo2O4 nanosheets attached on reduced graphene oxide (RGO) sheets is synthesized through a facile solution-based method combined with a simple thermal annealing process. The capacitive performances of the as-prepared NiCo2O4/RGO (NCG) composites as electrode materials are investigated. It is found that the NCG composites exhibit a high specific capacitance up to 1186.3 F g(-1) at the current density of 0.5 A g(-1), and superior cycling stability with about 97% of the initial capacitance after 100 cycles. The greatly enhanced capacitive performance of the NCG electrode can be attributed to the existence of RGO support, which serves as both conductive channels and active interface. The approach used in the synthesis provides a facile route for preparing graphene-binary metal oxide electrode materials. The remarkable capacitive performance of NCG composites will undoubtedly make them be attractive for high performance energy storage applications.
authors.affiliation: School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China.
authors.forename: Lianbo
authors.initials: L
authors.lastname: Ma
authors.affiliation: School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China. Electronic address: xiaopingshen@163.com.
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Shen
authors.affiliation: School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China.
authors.forename: Zhenyuan
authors.initials: Z
authors.lastname: Ji
authors.affiliation: School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China.
authors.forename: Xiaoqing
authors.initials: X
authors.lastname: Cai
authors.affiliation: School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China.
authors.forename: Guoxing
authors.initials: G
authors.lastname: Zhu
authors.affiliation: School of Materials Science and Engineering, Jiangsu University, Zhenjiang 212013, People's Republic of China.
authors.forename: Kangmin
authors.initials: K
authors.lastname: Chen
keywords: Nanosheet; Nickel cobaltite; Reduced graphene oxide; Supercapacitors; Synthesis