3D printable, excellent temperature adaptable and wearable supercapacitors from TPU/PPy/MnCO3 matrix gel

Abstract

A 3D printable skin comforting wearable supercapacitor gel system was approached and can work at roughly weather temperature conditions. This thermoplastic polyurethane/polypyrrole/MnCO₃ based supercapacitor exhibits 134, 230, 180 mF cm⁻² at −10, 25 and 100 °C temperature conditions. It retained ∼96% of the initial capacitance up to 50 000 cycles.