Fast constructing polarity-switchable zinc-bromine microbatteries with high areal energy density.

ABSTRACT: Microbatteries (MBs) are promising candidates to provide power for various miniaturized electronic devices, yet they generally suffer from complicated fabrication procedures and low areal energy density. Besides, all cathodes of current MBs are solid state, and the trade-off between areal capacity and reaction kinetics restricts their wide applications. Here, we propose a dual-plating strategy to facilely prepare zinc-bromine MBs (Zn-Br₂ MBs) with a liquid cathode to achieve both high areal energy density and fast kinetics simultaneously. The Zn-Br₂ MBs deliver a record high areal energy density of 3.6 mWh cm^-2, almost an order of magnitude higher than available planar MBs. Meanwhile, they show a polarity-switchable feature to tolerate confusion of cathode

SUBMITTER: Dai C 

PROVIDER: S-EPMC9278868 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature