Content area
Abstract
The robust Bi7.53Co0.47O11.92 nanoflowers on the nickel foam are first designed by a simple solvent thermal reaction followed by calcining. For its unique structural stability and good electrical conductivity, the Bi7.53Co0.47O11.92 nanoflowers exhibit high specific capacitance of 1046 F g−1 at 1 A g−1 and outstanding rate capability (81.7% capacitance retention at 10 A g−1) along with good cycling stability (80.5% capacitance retention after 3000 cycles). The asymmetric supercapacitor assembled with Bi7.53Co0.47O11.92 and activated carbon delivers a high energy density of 41.1 Wh kg−1. This research provides a guiding strategy for the synthesis of high-performance supercapacitor electrode material based on the bismuth. Robust Bi7.53Co0.47O11.92 nanoflowers were first designed by a feasible method and exhibited high specific capacitance and outstanding rate capability.
Details
; Yang, Yuan 1 ; Wang Xiuqin 2 ; Huang, Feifei 1 ; Zhao Jialu 3 1 Anhui Normal University, College of Chemistry and Materials Science, The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, Key Laboratory of Electrochemical Clean Energy of Anhui Higher Education Institutes, Wuhu, China (GRID:grid.440646.4) (ISNI:0000 0004 1760 6105)
2 Shandong Provincial Cancer Hospital and Institute, Jinan, China (GRID:grid.440646.4)
3 Central South University of Forestry and Technology, Changsha, China (GRID:grid.440660.0) (ISNI:0000 0004 1761 0083)