Buckypaper Templating Ni-Co Hydroxide Nanosheets Used as a Sensitive Strain Sensor and Flexible Supercapacitor

摘要

Ni-Co hydroxide nanosheets (NCHs) deposition on Buckypaper (BP) were fabricated by a facial and one-step electrodeposition method for sensitive strain sensor and high-performance supercapacitor electrodes. The binary metal hydroxides show great superiority over the related single hydroxides This NCHs/BP material exhibits a sequence of excellent properties, such as linear relationship between normalized electrical resistance (R/R_0) responses to mechanical deformation, high areal capacitance of 1.5 F cm~(-2), high rate capability and excellent cyclic stability. The as-prepared asymmetric device shows high capacitance, low internal resistance and high flexibility (negligible capacitance changes during large deformation). These demonstrated superiority of NCHs/BP material suggesting its promising applications as electromechanical sensors and next generation high-performance energy storage devices.