Amorphous Ni(OH)₂ closely coating on interconnected nickel nanowire arrays (Ni(OH)₂@INWA) with rational architectures were prepared. The INWA with small wire diameter and high wire density acts both as miniature conductive scaffold and highly conductive core providing large surface area to load amorphous Ni(OH)₂ and ensuring high ionic/electronic conductivities. The amorphous Ni(OH)₂ nanosheets in-situ converted from the metallic surface of INWA are in seamless contact with the metallic core forming a close core-shell structure. Because of the material and architecture advantages, the amorphous Ni(OH)₂@INWA presents enhanced electrochemical performance of ultrahigh specific capacitances of 3400 F g⁻¹ at a specific current of 5 A g¹, remarkable rate capability (3000 F g⁻¹ at 100 A g⁻¹). The asymmetric supercapacitor of Ni(OH)₂@INWA//reduced graphene oxide delivers a high specific energy of 53 Wh kg¹ at a specific power of 395 W kg⁻¹, and a specific energy of 31 Wh kg⁻¹ can be maintained at a specific power of 4973 W kg⁻¹. It also shows a long-term stability with 91 % retention of the initial capacitance after 10000 cycles at a specific current of 2 A g⁻¹.

制备了具有合理结构的紧密沉积在互连镍纳米线阵列（Ni（OH）₂ @INWA）上的非晶Ni（OH）₂。线径小，线密度高的INWA既用作微型导电支架，又用作高导电芯，可提供较大的表面积以加载非晶态Ni（OH）₂并确保高离子/电导率。从INWA的金属表面原位转化而来的无定形Ni（OH）₂纳米片与金属核无缝接触，形成紧密的核壳结构。由于材料和结构方面的优势，非晶态Ni（OH）₂ @INWA表现出增强的3400 F g超高比电容的电化学性能^-1以5克的比电流¹，显着的速率能力（3000 F G ^-1在100克^-1）。Ni（OH）₂ @ INWA //还原石墨烯的不对称超级电容器在395 W kg ^-1的比功率下可提供53 Wh kg ¹的高比能，并且可以维持31 Wh kg ^-1的比能在4973 W kg ^-1的比功率下。它还显示出长期稳定性，在2 A g ^-1的特定电流下10000次循环后，初始电容保持91％。