Recent Progress and Prospect of Printed Microsupercapacitors on a Large Scale

Printed microsupercapacitors (MSCs) possess great potential in as an energy supply for miniaturized, flexible, and portable electronics because of their high electrochemical performance, favorable customization, scalable production, and low cost. In this Forum article, we first introduce the fundamental principles of printed MSCs, concentrating on the characteristics of different printing technologies, the structural features of MSCs, and the requirements for printing inks. Further, the latest advancements of printed MSCs are summarized in detail from various aspects such as the design of key electrode and electrolyte materials, rheological regulation of component inks, and enhancement of the electrochemical and functional properties. On this regard, we put forward some key views on the preparation of printed electrodes, the selection of electrolytes, and the integration of the overall devices, hoping to offer insights for the rapid development of printed MSCs in the future.