Constructing rational structure and utilizing distinctive components are two important keys to promote the development of high performance supercapacitor. Herein, we adopt a facile two-step method to develop an in-situ heterostructure with NiCo-LDH nanowire as core and NiOOH nanosheets as shell on carbon fiber cloth. The resultant [email protected] electrode exhibites a high specific capacitance of about 2622 F g⁻¹ at 1 A g⁻¹ and good cycling stability (88.5% remain after 10000 cycles). This reinforced electrochemical performance is benefit from the distinct core-shell structure, and takes advantage of the synergetic effect to supply more electrochemical active spots and pathways to accelerate electron and ion transport. Furthermore, the fabricated asymmetric supercapacitor of optimized [email protected]//AC device displays a high energy density of 51.7 Wh kg⁻¹ while the power density is 599 W kg⁻¹ and presents a satisfying cycling performance.

构建合理的结构和利用独特的组件是促进高性能超级电容器发展的两个重要关键。在本文中，我们采用一种简便的两步法在碳纤维布上开发以NiCo-LDH纳米线为核芯和NiOOH纳米片为壳的原位异质结构。所得的[受电子邮件保护的]电极在1 A g ^-1处表现出约2622 F g ^-1的高比电容和良好的循环稳定性（10000次循环后仍保留88.5％）。这种增强的电化学性能得益于独特的核-壳结构，并利用协同效应提供了更多的电化学活性点和途径来加速电子和离子的传输。此外，所制造的经优化的[受电子邮件保护的] // AC设备的非对称超级电容器显示出51.7 Wh kg ^-1的高能量密度，而功率密度为599 W kg ^-1并具有令人满意的循环性能。