具有嵌入金纳米粒子的石墨烯水凝胶薄膜的可弯曲固态超级电容器。
Bendable solid-state supercapacitors with Au nanoparticle-embedded graphene hydrogel films.
机构信息
Korea University, Department of Electrical Engineering, Seoul 02841, Korea.
Korea University, School of Biomedical Engineering, Seoul 02841, Korea.
出版信息
Sci Rep. 2017 Jan 11;7:40163. doi: 10.1038/srep40163.
In this study, we fabricate bendable solid-state supercapacitors with Au nanoparticle (NP)-embedded graphene hydrogel (GH) electrodes and investigate the influence of the Au NP embedment on the internal resistance and capacitive performance. Embedding the Au NPs into the GH electrodes results in a decrease of the internal resistance from 35 to 21 Ω, and a threefold reduction of the IR drop at a current density of 5 A/g when compared with GH electrodes without Au NPs. The Au NP-embedded GH supercapacitors (NP-GH SCs) exhibit excellent capacitive performances, with large specific capacitance (135 F/g) and high energy density (15.2 W·h/kg). Moreover, the NP-GH SCs exhibit comparable areal capacitance (168 mF/cm) and operate under tensile/compressive bending.
在这项研究中，我们制备了具有金纳米粒子（NP）嵌入的石墨烯水凝胶（GH）电极的可弯曲固态超级电容器，并研究了 NP 嵌入对内部电阻和电容性能的影响。将 Au NPs 嵌入 GH 电极会导致其内阻从 35 到 21 Ω，当与没有 Au NPs 的 GH 电极相比，在 5 A/g 的电流密度下，IR 降降低了三倍。Au NP 嵌入的 GH 超级电容器（NP-GH SCs）具有出色的电容性能，具有大的比电容（135 F/g）和高的能量密度（15.2 W·h/kg）。此外，NP-GH SCs 表现出可比的面电容（168 mF/cm），并可在拉伸/压缩弯曲下运行。
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