Tian Jinjun, Xue Yan, Yu Xinping, Pei Yuanchao, Zhang Hucheng, Wang Jianji
Collaborative Innovation Centre of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang Henan 453007 China
School of Biological and Chemical Engineering, Nanyang Institute of Technology Nanyang Henan 473004 China.
RSC Adv. 2019 Jun 5;9(31):17706-17716. doi: 10.1039/c9ra02034a. eCollection 2019 Jun 4.
A two-dimensional (2D) nanoporous Ni(OH) film was successfully developed from triethanolamine (TEA) as the alkali source and soft template using a scalable hydrothermal technique. The nanostructured Ni(OH) film was flexible and translucent, and could be directly compressed on a current collector. Owing to the uniform well-defined morphology and stable structure, the Ni(OH) film binder-free electrode displayed a high specific capacity, exceptional rate capability, and admirable cycle life. The specific capacitance was 453.6 mA h g (1633 F g) at 0.5 A g. The assembled Ni(OH)//activated carbon (AC) asymmetric supercapacitor (ASC) device had an energy density of 58.7 W h kg at a power density of 400 W kg. These prominent electrochemical properties of Ni(OH) were attributed to the high electrical conductivity, high surface area, and unique porous architecture. Free tailoring, binder-free, and direct pressing were the most significant achievements of the Ni(OH) film in the development of high-performance energy storage devices.
采用可扩展的水热技术，以三乙醇胺（TEA）作为碱源和软模板，成功制备了二维（2D）纳米多孔Ni(OH)薄膜。这种纳米结构的Ni(OH)薄膜具有柔韧性和半透明性，并且可以直接压在集流体上。由于其形态均匀、结构明确且稳定，无粘结剂的Ni(OH)薄膜电极表现出高比容量、出色的倍率性能和令人钦佩的循环寿命。在0.5 A g时，比电容为453.6 mA h g（1633 F g）。组装的Ni(OH)//活性炭（AC）不对称超级电容器（ASC）装置在功率密度为400 W kg时的能量密度为58.7 W h kg。Ni(OH)的这些突出电化学性能归因于其高电导率、高表面积和独特的多孔结构。自由剪裁、无粘结剂和直接压制是Ni(OH)薄膜在高性能储能器件开发中的最重要成果。
