Thanks to low cost, high safety, and large energy density, aqueous zinc-ion batteries have attracted tremendous interest worldwide. However, it remains a challenge to develop high-performance cathode materials with an appropriate method that is easy to realize massive production. Herein, we use a molten salt method to synthesize nanostructured manganese oxides. The crystalline phases of the manganese oxides can be tuned by changing the amount of reduced graphene oxide added to the reactant mixture. It is found that the α-MnO₂/Mn₂O₃ nanocomposite with the largest mass ratio of Mn₂O₃ delivers the best electrochemical performances among all the products. And its rate capability and cyclability can be significantly improved by modifying the Zn anode with carbon black coating and nanocellulose binder. In this situation, the nanocomposite can deliver high discharging capacities of 322.1 and 213.6 mAh g⁻¹ at 0.2 and 3 A g⁻¹, respectively. After 1000 cycles, it can retain 86.2% of the capacity at the 2nd cycle. Thus, this nanocomposite holds great promise for practical applications.

由于低成本，高安全性和大能量密度，水性锌离子电池在全世界引起了极大的兴趣。然而，通过易于实现大规模生产的适当方法来开发高性能阴极材料仍然是一个挑战。在本文中，我们使用熔融盐法合成纳米结构的锰氧化物。可以通过改变添加到反应混合物中的还原的氧化石墨烯的量来调节氧化锰的结晶相。结果发现α-MnO的₂ / Mn为₂ ö ₃纳米复合材料与Mn的最大质量比₂ ö ₃在所有产品中提供最佳的电化学性能。通过用炭黑涂层和纳米纤维素粘合剂修饰锌阳极，可以显着提高其速率能力和循环性。在这种情况下，该纳米复合材料可以在0.2和3 A g ^-1下分别提供322.1和213.6 mAh g ^-1的高放电容量。经过1000个循环后，它可以在第二个循环中保留86.2％的容量。因此，这种纳米复合材料在实际应用中具有广阔的前景。