Flexible supercapacitor: Overview and outlooks

Flexible supercapacitors have become research hotspot as the energy storage device to power up the wearable and portable electronics due to their high specific capacitance and power density, fast charge/discharge rate and excellent flexibility. This review systematically summarized the electrode materials for the flexible supercapacitor, the modifying strategies to improve their electrochemical performance, fabricating flexible electrodes on various substrates, the novel solid-state electrolytes, the natural resources for each component of the flexible supercapacitor, the assembling of the device and the perspectives of the future research.