期刊
MATERIALS LETTERS
卷 249, 期 -, 页码 151-154出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2019.04.043
关键词
Energy storage and conversion; Electronic materials; Supercapacitor; CuCo2O4; Core-shell structure; RGO
资金
- National Natural Science Foundation of China [51601220, 51671214]
- State Key Laboratory of Solidification Processing in NWPU [SKLSP2018264]
In this work, a novel hierarchical CuCo2O4@MnO2 composite with core-shell structure grown on RGO (coated on the surface of nickel foam (NF)) was synthesized via a facile hydrothermal route, in which MnO2 nanosheets uniformly wrapped around the surface of CuCo2O4 nanorods. RGO/CuCo2O4 composite was also prepared for comparison. Benefiting from their synergistic effect, RGO/CuCo2O4@MnO2 electrode delivered high specific capacitance of 850 F g(-1) at 1 A g(-1) in 2.0 MKOH electrolyte and an outstanding cycling stability with 94.2% retention over 3000 cycles, suggesting the great potential application of this material in advanced energy storage device. (C) 2019 Elsevier B.V. All rights reserved.
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