Buckypaper templating Ni-Co hydroxide nanosheets film with stimuli-responsive properties

Ni-Co hydroxide nanosheets (NCHs) deposition on as-oxidized Buckypaper (BP) were fabricated by a one-step electrodeposition method for sensitive stimuli-responsive sensors (temperature, mechanical deformation etc.). This NCHs/BP film exhibits a near linear relationship between normalized electrical resistance (R/R0) responses with different external conditions, such as large coefficient of linear thermal expansion (CLTE) α of 235.0 in 10−6/K under temperature stimuli, and linear electro-mechanical relationship with ultimate strain of 2.1% and ultimate stress of 21.0 MPa under mechanical deformation stimuli (stretching, bending and torsion), suggesting its promising applications as thermal sensors and mechanical-stimulated devices.