A flexible nickel foam (NF) based reduced Holey Graphene Oxide (rHGO) wrapping on NiO@NF hybrid supercapacitor electrode is fabricated using facile hydrothermal reaction followed by HGO dispersion dipping to achieve an efficient, bendable and scalable supercapacitor with high capacitance for wearable smart device usage. The sample electrode reveals a typical wrapping morphology of porous rHGO spreading on uniform nickel oxide crystal layer while exposing crystals through recurrent rHGO slits. Benefiting from this morphology and optimization of fabrication parameters, the sample electrode gains better electrochemical performance from higher electric double layer capacitance incorporation and more efficient electrolyte ion transportation, with less than 0.1 Ω equivalent series resistance (ESR), 752.9 F/g of capacitance, and 90% capacitance retention under 10 A/g current density. The sample electrode is then made into an all-solid-state supercapacitor device possessing 0.267 Wh/m² energy density at a power density of 8.14 W/m², and the bendable fact of the device endows it 97% capacitance retention after 500 times of curving, making it especially suitable as flexible energy provider. This simple fabrication method should shed light on flexible hybrid supercapacitor development.

使用简便的水热反应和 HGO 分散浸渍法制备了基于柔性镍泡沫 (NF) 的还原多孔氧化石墨烯 (rHGO) 包裹在 NiO@NF 混合超级电容器电极上，以实现用于可穿戴智能设备的高效、可弯曲和可扩展的高电容超级电容器用法。样品电极显示了多孔 rHGO 的典型包裹形态，其分布在均匀的氧化镍晶体层上，同时通过重复的 rHGO 狭缝暴露晶体。受益于这种形态和制造参数的优化，样品电极通过更高的双电层电容结合和更有效的电解质离子传输获得了更好的电化学性能，等效串联电阻 (ESR) 小于 0.1 Ω，电容为 752.9 F/g，在 10 A/g 电流密度下保持 90% 的电容。然后将样品电极制成具有 0.267 Wh/m 的全固态超级电容器装置²能量密度，功率密度为 8.14 W/m ²，器件的可弯曲特性使其在弯曲 500 次后仍可保持 97% 的电容，使其特别适合作为柔性能源供应商。这种简单的制造方法应该有助于柔性混合超级电容器的开发。