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- W4360989838 abstract "Abstract Despite their high output voltage and safety advantages, rechargeable alkaline nickel‐zinc batteries face significant challenges associated with the cathodic side reaction of oxygen evolution, which results in low energy efficiency (EE) and poor stability. Herein, we propose to leverage the side oxygen evolution reaction (OER) in nickel‐zinc batteries by coupling electrocatalysts for oxygen reduction reactions (ORR) in the cathode, thus constructing an air breathing cathode. Such a novel battery (Ni‐ZnAB), designed in a pouch‐type cell with a lean electrolyte, exhibits an outstanding EE of 85 % and a long cycle life of 100 cycles at 2 mA cm −2 , which are significantly superior to those of traditional Ni‐Zn batteries (54 %, 50 cycles). Compared to Ni‐Zn, the enhanced EE of Ni‐ZnAB is attributed to the contribution from ORR, while the improved cycling stability is because the stability of the anode, cathode and electrolyte are also enhanced in Ni‐ZnAB. Furthermore, an ultrahigh stability of 500 cycles with an average EE of 84 % at 2 mA cm −2 was achieved using a mold cell with rich electrolyte, demonstrating the strong application potential of Ni‐ZnAB." @default.
- W4360989838 created "2023-03-30" @default.
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- W4360989838 date "2023-04-21" @default.
- W4360989838 modified "2023-10-02" @default.
- W4360989838 title "Enhancing Energy Conversion Efficiency and Durability of Alkaline Nickel‐Zinc Batteries with Air‐Breathing Cathode" @default.
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- W4360989838 doi "https://doi.org/10.1002/ange.202303517" @default.
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