TY - JOUR AB - Ionogels are semi-solid, ion conductive and mechanically compliant materials that hold promise for flexible, shape-conformable and all-solid-state energy storage devices. However, identifying facile routes for manufacturing ionogels into devices with highly resilient electrode/electrolyte interfaces remains a challenge. Here we present a novel all-in-gel supercapacitor consisting of an ionogel composite electrolyte and bucky gel electrodes processed using a one-step method. Compared with the mechanical properties and ionic conductivities of pure ionogels, our composite ionogels offer enhanced self-recovery (retaining 78% of mechanical robustness after 300 cycles at 60% strain) and a high ionic conductivity of 8.7 mS cm−1, which is attributed to the robust amorphous polymer phase that enables facile permeation of ionic liquids, facilitating effective diffusion of charge carriers. We show that development of a supercapacitor with these gel electrodes and electrolytes significantly improves the interfacial contact between electrodes and electrolyte, yielding an area specific capacitance of 43 mF cm−2 at a current density of 1.0 mA cm−2. Additionally, through this all-in-gel design a supercapacitor can achieve a capacitance between 22–81 mF cm−2 over a wide operating temperature range of −40 °C to 100 °C at a current density of 0.2 mA cm−2. AU - Yin,C AU - Liu,X AU - Wei,J AU - Tan,R AU - Zhou,J AU - Ouyang,M AU - Wang,H AU - Cooper,SJ AU - Wu,B AU - George,C AU - Wang,Q DO - 10.1039/c9ta01155b EP - 8831 PY - 2019/// SN - 2050-7488 SP - 8826 TI - “All-in-Gel” design for supercapacitors towards solid-state energy devices with thermal and mechanical compliance T2 - Journal of Materials Chemistry A UR - http://dx.doi.org/10.1039/c9ta01155b UR - http://hdl.handle.net/10044/1/69153 VL - 7 ER -