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Enhanced performance of hybrid supercapacitors by the synergistic effect of Co(OH)2 nanosheets and NiMn layered hydroxides by Zhuoran Hou; Jie Yu; Xinsheng Zhou; Zhibin Chen; Jiawei Xu; Boyu Zhao; Wenbao Gen; Huayu Zhang is a Chemistry article available to read on EtoBox.
What is Enhanced performance of hybrid supercapacitors by the synergistic effect of Co(OH)2 nanosheets and NiMn layered hydroxides about?
A self-supporting composite electrode material with a unique three-dimensional structure was synthesized by in-situ growth of nanoscale NiMnLDH-Co(OH)2 on a nickel foam substrate via hydrothermal electrodeposition. The 3D layer of NiMnLDH-Co(OH)2 provided abundant reactive sites for electrochemical reactions, ensuring a solid and conductive skeleton for charge transfer and resulting in significant enhancement of electrochemical performance. The composite material showed a strong synergistic effect between the small nano-sheet Co(OH)2 and NiMnLDH, which promoted reaction kinetics, while the nickel foam substrate acted as a structural conductivity agent, stabilizer, and good conductive medium. The composite electrode showed impressive electrochemical performance, achieving a specific capacitance of 1870F g−1 at 1 A g−1 and retaining 87% capacitance after 3000 charge–discharge cycles, even at a high current density of 10 A g−1. Moreover, the resulting NiMnLDH-Co(OH)2//AC asymmetric supercapacitor (ASC) demonstrated remarkable specific energy of 58.2 Wh kg−1 at a specific power of 1200 W kg−1, along with outstanding cycle stability (89% capacitance retention after 5000 cycles at 10 A g
Who reads Enhanced performance of hybrid supercapacitors by the synergistic effect of Co(OH)2 nanosheets and NiMn layered hydroxides?
It is typically read by researchers, students, and practitioners in Chemistry.
- Author
- Zhuoran Hou; Jie Yu; Xinsheng Zhou; Zhibin Chen; Jiawei Xu; Boyu Zhao; Wenbao Gen; Huayu Zhang
- Publisher
- Elsevier BV
- Published
- 2023
- Language
- EN
- Field
- Chemistry (Physical Sciences)