Abstract The aqueous Zn-MnO2 battery has been extensively studied due to its inherent merits of safety, low cost and environmental friendliness. Tremendous efforts have been made to improve the capacity and cycling stability of MnO2 cathode. Herein, the mesoporous MnO2@polyaniline nanohybrids were synthesized by using a facile and eco-friendly gas/liquid interfacial reaction between aniline vapor and KMnO4 aqueous solution. Owing to the birnessite-type and mesoporous structure, as well as the synergistic effect between MnO2 and polyaniline, the MnO2@polyaniline nanohybrids achieved excellent Zn-storage performance, for instance, distinguished capacity (313 mA h g–1 at 0.1 A g–1) and cycling stability (188 mA h g–1 after 500 cycles at 0.5 A g–1). The MnO2@polyaniline nanohybrids featured with facile and eco-friendly synthesis show prominent competiveness as high-performance cathode for Zn-MnO2 battery.

中文翻译：

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通过苯胺和KMnO4水溶液之间的气/液界面反应实现介孔MnO2@聚苯胺纳米杂化物制备Zn-MnO2电池

摘要 Zn-MnO2 水系电池由于其固有的安全性、低成本和环境友好性等优点而被广泛研究。为了提高MnO2正极的容量和循环稳定性，已经做出了巨大的努力。在这里，介孔MnO2@聚苯胺纳米杂化物是通过苯胺蒸气和KMnO4水溶液之间的简便且环保的气/液界面反应合成的。由于水钠锰矿型和介孔结构，以及 MnO2 和聚苯胺之间的协同作用，MnO2@聚苯胺纳米杂化物实现了优异的储锌性能，例如卓越的容量（313 mA hg-1 at 0.1 A g-1 ) 和循环稳定性（0.5 A g-1 下 500 次循环后 188 mA hg-1）。