Huang Feng, Zhou Yang, Sha Zhao, Peng Shuhua, Chang Wenkai, Cheng Xinying, Zhang Jin, Brown Sonya A, Han Zhaojun, Wang Chun-Hui
School of Mechanical and Manufacturing Engineering, University of New South Wales, Sydney, NSW 2052, Australia.
CSIRO Manufacturing, 36 Bradfield Road, Lindfield, NSW 2070, Australia.
ACS Appl Mater Interfaces. 2022 Jul 13;14(27):30857-30871. doi: 10.1021/acsami.2c06303. Epub 2022 Jun 27.
The interface between structural electrodes and solid electrolytes plays a key role in the electrical-mechanical properties of energy storage structures. Herein, we present a surface functionalization method to improve the ion conduction efficiency at the interface between a structural electrode and a solid electrolyte that consists of a bi-continuous network of epoxy and ionic liquid (IL). Composite supercapacitors made with this electrolyte and carbon fiber (CF) electrodes coated with manganese dioxide (MnO) demonstrate that treating the electrodes with the silane can increase the areal capacitance by 300% without degrading the tensile strength. The dual-phase electrolyte containing 40 wt % IL and 60 wt % epoxy exhibits the highest multifunctional performance, measured by the product of stiffness and ionic conductivity. The outstanding mechanical and energy storage properties demonstrate that the silane treatment of MnO-coated CF fabric structural electrodes is a promising method for future high-performance structural composite supercapacitors.
结构电极与固体电解质之间的界面在储能结构的机电性能中起着关键作用。在此，我们提出一种表面功能化方法，以提高由环氧和离子液体（IL）的双连续网络组成的结构电极与固体电解质之间界面处的离子传导效率。用这种电解质和涂有二氧化锰（MnO）的碳纤维（CF）电极制成的复合超级电容器表明，用硅烷处理电极可使面积电容增加300%，而不会降低拉伸强度。含有40 wt% IL和60 wt% 环氧的双相电解质表现出最高的多功能性能，以刚度和离子电导率的乘积来衡量。出色的机械和储能性能表明对涂有MnO的CF织物结构电极进行硅烷处理是未来高性能结构复合超级电容器的一种有前途的方法。
