Wang Yi-Fan, Wang Hai-Tao, Yang Shi-Yi, Yue Yuan, Bian Shao-Wei
State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Chemistry, Chemical Engineering and Biotechnology , Donghua University , Shanghai 201620 , PR China.
ACS Appl Mater Interfaces. 2019 Aug 21;11(33):30384-30390. doi: 10.1021/acsami.9b06317. Epub 2019 Aug 7.
Constructing high capacitance active materials and three-dimensional (3D) conductive networks inside textile yarn frames is a promising strategy to synthesize yarn supercapacitor electrodes. In this study, growing NiCoS@Ni-Co layered double hydroxide (LDH) nanotube arrays on Au-metalized cotton yarns yields a novel yarn supercapacitor electrode material. The resulting yarn electrode possesses numerous merits, including high electrical conductivity from NiCoS and Au-metalized cotton yarns, high capacitance of Ni-Co LDH nanosheets, and the 3D hierarchical electrode structure. The unique electrode structure leads to excellent electrochemical properties including high capacitance (5680 mF cm), excellent rate performance, and stable cycling performance. A two-ply symmetric yarn supercapacitor assembled from the NiCoS/Ni-Co LDH/Au/cotton yarn electrode reaches an areal energy density of 3.5 μW h cm.
在纺织纱线框架内构建高电容活性材料和三维（3D）导电网络是合成纱线超级电容器电极的一种很有前景的策略。在本研究中，在镀金属金的棉纱上生长NiCoS@Ni-Co层状双氢氧化物（LDH）纳米管阵列，得到了一种新型的纱线超级电容器电极材料。所得的纱线电极具有许多优点，包括来自NiCoS和镀金属金的棉纱的高导电性、Ni-Co LDH纳米片的高电容以及3D分级电极结构。独特的电极结构导致优异的电化学性能，包括高电容（5680 mF cm）、优异的倍率性能和稳定的循环性能。由NiCoS/Ni-Co LDH/Au/棉纱电极组装而成的双股对称纱线超级电容器的面积能量密度达到3.5 μW h cm 。
