Haozhe Zhang, Xinyue Zhang, Haodong Li, Yifeng Zhang, Yinxiang Zeng, Yexiang Tong, Peng Zhang, Xihong Lu. Flexible rechargeable Ni//Zn battery based on self-supported NiCo2O4 nanosheets with high power density and good cycling stability. Green Energy&Environment, 2018, 3(1): 56-62. doi: 10.1016/j.gee.2017.09.003
Citation: Haozhe Zhang, Xinyue Zhang, Haodong Li, Yifeng Zhang, Yinxiang Zeng, Yexiang Tong, Peng Zhang, Xihong Lu. Flexible rechargeable Ni//Zn battery based on self-supported NiCo2O4 nanosheets with high power density and good cycling stability. Green Energy&Environment, 2018, 3(1): 56-62. doi: 10.1016/j.gee.2017.09.003

Flexible rechargeable Ni//Zn battery based on self-supported NiCo2O4 nanosheets with high power density and good cycling stability

doi: 10.1016/j.gee.2017.09.003
  • The overall electrochemical performances of Ni–Zn batteries are still far from satisfactory, specifically for rate performance and cycling stability Herein, we demonstrated a high-performance flexible Ni//Zn battery with outstanding durability and high power density based on self-supported NiCo2O4 nanosheets as cathode and Zn nanosheets as anode. This Ni//Zn battery is able to deliver a remarkable capacity of 183.1 mAh g−1 and a good cycling performance (82.7% capacity retention after 3500 cycles). More importantly, this battery achieves an admirable power density of 49.0 kW kg−1 and energy density of 303.8 Wh kg−1, substantially higher than most recently reported batteries. With such excellent electrochemical performance, this battery will have great potential as an ultrafast power source in practical application.

     

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