Microstructure-tuned cobalt oxide electrodes for high-performance Zn-Co batteries

The insufficient utilization of active material results in the poor performance of Zn-Co batteries. In this work, by adjusting the key parameters in the synthesis process, the Co3O4 electrodes with different pore size distributions, morphologies, and loadings are fabricated. The effects of the tuned microstructures on three-electrode and battery systems are compared carefully. In this way, a heterogeneous porous nanowire structure with reasonable loading is constructed for the first time, which shows high utilization ratio, excellent rate performance, and good cycling stability.

May 2020