The rapid development of printed and microscale electronics imminently requires their compatible micro-batteries (MBs) with high performance, applicable scalability, and exceptional safety, but facing great challenges from the ever-reported stacked geometry. Herein, the first printed planar prototype of aqueous-based, high-safe Zn//MnO
2 MBs, with outstanding performance, aesthetic diversity, flexibility and modularization, is demonstrated, based on interdigital patterns of Zn ink as anode and MnO
2 ink as cathode, with high-conducting graphene ink as metal-free current collector, fabricated by industrially scalable screen-printing technique.
This work was highlighted by the famous media of
X. Wang, S.H. Zheng, F. Zhou, J.Q. Qin, X.Y. Shi, S. Wang, C.L. Sun, X.H. Bao, Z.-S. Wu*. Scalable fabrication of printed Zn//MnO
planar micro-batteries with high volumetric energy density and exceptional safety. National Science Review, 2019, 6: 1–9. DOI: