Abstract
The electrolytic Zn-MnO2 aqueous battery is an attractive energy storage technology with a high working voltage and energy density for the large-scale application. Here, a three-phase decoupled Zn-MnO2 electrolytic battery is designed. A salt bridge gel as an intermediate is introduced to separate the catholyte and anolyte in this design. This battery behaves a wide electrochemical stability window and a high discharge voltage of 2.5 V with 95 % capacity retention after 350 cycles. The working mechanism has also been discussed in this study via ex-situ analysis.
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