Conductive, self-healing and recyclable electrodes for dielectric elastomer generator with high energy density

Largely improved generating energy density, efficiency, and fatigue life of DEG by designing TiO2/LNBR/SiR DE composites with a self-assembled structure

“…The homemade uniaxial DEG experimental device (Fig. S8†), which is similar to that reported in our previous study, 6 was used to measure the energy harvesting performance of DEG using the as-prepared samples and VHB 4905 elastomer as the DE substrate. The generated electrical energy (Δ E ) mainly depends on the C and input bias voltage ( U 1 ) (eqn (1)).…”

“…3,5 But, the VHB tape shows low electrical breakdown strength (E b , z30 kV mm À1 ) and high viscoelastic loss, which limits w max , power conversion efficiency (PCE) and fatigue life (N FL ) of the DEG. Up to now, many kinds of DE materials such as silicone rubber (SiR), [6][7][8][9][10][11] polyurethane (PU), [12][13][14] natural rubber (NR) 15 and poly(styrene-butadiene-styrene) (SBS) 16 have been employed as DEG materials for replacing the VHB tape. Among these materials, SiR is one of the most promising materials for the practical application of DEG due to its high electrical insulation, high E b (z60 kV mm À1 ), high elasticity and low elastic modulus (Y).…”

High strength, stable and self-healing copolyimide for defects induced by mechanical and electrical damages

“…The second is need to ensure the movement of CPI molecular chain, which is the reason for the temperature in the self-healing process. 21,38 Therefore, both pressure and temperature are satisfied to provide the conditions for the exchange of disulfide bonds (S–S) in this work.…”

Dielectric properties and dielectric relaxation process of polymethylphenylsiloxane/silicon dioxide nanocomposites

“…1 They are widely used in artificial muscles, [2][3][4] touch displays, [5][6][7] robots, [8][9][10] and energy harvesting. [11][12][13] However, the low dielectric constant and low breakdown strength significantly limit the use of silicone rubber materials as dielectric materials.…”

“…Polysiloxane dielectric elastomers (DEs) has become a promising electrically active soft material because they have high efficiency, good weather resistance, good shear stability, low toxicity, and wide temperature range and are insensitive to air humidity 1 . They are widely used in artificial muscles, 2–4 touch displays, 5–7 robots, 8–10 and energy harvesting 11–13 . However, the low dielectric constant and low breakdown strength significantly limit the use of silicone rubber materials as dielectric materials.…”