Y.X. Wang ⊥, Z.H. Ren ⊥, S.M. Liu, X.Y. Shi *, S.X. Wang * and Z.-S. Wu *

ACS Applied Energy Materials, 2024, Accepted.

Printed micro-supercapacitors (MSCs) possess great potential in energy supply for miniaturized, flexible and portable electronics because of their high electrochemical performance, favorable customization, scalable production and low cost. In this review, 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 design of key electrode and electrolyte materials, rheological regulation of component inks, and enhancement of electrochemical and functional properties. On this basis, 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.