Abstract Hybrid supercapacitors (HSCs) that use the nickel hydroxide-graphene hybrid (NGH) as an anode material and reduced graphene oxide (rGO) as a cathode material are a promising HSC structure. The NGH electrode is synthesized by one-step, binder-free deposition of a micro-size hydroxide powder and graphite powder mixture on nickel foam by the nanoparticle deposition system (NPDS). The NPDS is classified as a vacuum kinetic spraying approach. The electrochemical performance of the NGH-10 electrode in a 3-electrode cell demonstrates a specific capacitance of 3408 F/g at 1 A/g. The NGH-10//rGO HSC displays a specific capacitance of 180 F/g at 1 mA/cm2 in a high operating potential from 0 V to 1.6 V. The NGH-10//rGO HSC has an energy density of 64 Wh/kg @ 411 W/kg, and still 20 Wh/kg @ 8230 W/kg.

中文翻译：

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用于高能量密度混合超级电容器的真空动力学喷涂制备的 Ni(OH)2-石墨烯混合物的一步沉积

摘要 以氢氧化镍-石墨烯杂化物（NGH）为负极材料，还原氧化石墨烯（rGO）为正极材料的混合超级电容器（HSC）是一种很有前景的HSC结构。NGH 电极是通过纳米颗粒沉积系统 (NPDS) 在泡沫镍上一步无粘合剂沉积微米级氢氧化物粉末和石墨粉末混合物而合成的。NPDS 被归类为真空动力喷涂方法。NGH-10 电极在 3 电极电池中的电化学性能表明在 1 A/g 下的比电容为 3408 F/g。NGH-10//rGO HSC 在 0 V 至 1.6 V 的高工作电位下在 1 mA/cm2 下显示出 180 F/g 的比电容。 NGH-10//rGO HSC 的能量密度为 64 Wh/ kg @ 411 W/kg，仍然是 20 Wh/kg @ 8230 W/kg。