The ultralong cycle life of solid flexible asymmetric supercapacitors based on nickel vanadium sulfide nanospheres,CrystEngComm

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The ultralong cycle life of solid flexible asymmetric supercapacitors based on nickel vanadium sulfide nanospheres
CrystEngComm ( IF 2.6 ) Pub Date : 2020-07-13 , DOI: 10.1039/d0ce00376j
Yuanyuan Li _{1,

2,

3,

4,

5} , Xin Chen _{1,

2,

3,

4,

5} , Yali Cao _{1,

2,

3,

4,

5} , Wanyong Zhou _{5,

6,

7,

8} , Hui Chai _{1,

2,

3,

4,

5}

Affiliation

The increasing development of portable devices for intelligent living promotes explorations into solid flexible energy storage systems. However, obtaining high-performance energy equipment with high-efficiency fabrication processes is still a serious challenge. Herein, a new strategy for the design of high energy flexible solid-state supercapacitors possessing a superior specific capacitance is reported. The electrodes of hierarchical porous nickel vanadium sulfide nanospheres optimized with triethanolamine show an attractive capacitance of 697.4 C g⁻¹ at a current density of 1 A g⁻¹ and an outstanding cycling ability of 86.1% after cycling at 10 A g⁻¹ 3000 times. The asymmetric solid flexible supercapacitor (ASC) equipment delivers a high energy density of 12 W h kg⁻¹ at a power density of 900 W kg⁻¹ and gives rise to a robust superior cycling stability with 100% capacitance maintained over 7000 charge–discharge cycles. This research shows that ternary nickel vanadium sulfide nanospheres show great potential for applications in future flexible electronic devices.

中文翻译：

基于硫化镍钒钒纳米球的固态柔性不对称超级电容器的超长循环寿命

用于智能生活的便携式设备的不断发展促进了对固态柔性储能系统的探索。然而，获得具有高效制造工艺的高性能能源设备仍然是一个严峻的挑战。在此，报道了设计具有高比电容的高能量柔性固态超级电容器的新策略。用三乙醇胺优化的多层多孔镍钒硫化物纳米球的电极在1 A g ^-1的电流密度下显示出697.4 C g ^-1的吸引电容，在10 A g ^-1循环后显示出出色的循环能力，为86.1％3000次非对称固态柔性超级电容器（ASC）设备在900 W kg ^-1的功率密度下可提供12 W h kg ^-1的高能量密度，并具有强大的卓越循环稳定性，在7000次充放电中可保持100％的电容周期。这项研究表明，三元镍钒硫化物纳米球在未来的柔性电子设备中显示出巨大的应用潜力。

更新日期：2020-08-10

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