Aqueous zinc ion batteries (AZIBs) have received increasing attention because of their low cost, environmental benefits and material abundance. However, the intercalation of zinc ions in the cathode materials is challenging and complex. To tackle the above-mentioned issue, we demonstrate an AZIBs system which consists of a porous metal–organic coordination polymers (MOCP) nanosheets cathode, a Zn foil anode, and a ZnSO₄/MnSO₄ solution electrolyte. The zinc cell delivers a high reversible capacity of 240.3 mA h g⁻¹ at 150 mA g⁻¹ and an excellent capacity retention of approximately 100% over 1500 cycles at 600 mA g⁻¹. The superior electrochemical performance is ascribed to the addition of MnSO₄, which results in the formation of MnO₂, and the MnO₂ can enhance the electrochemical performance of the AZIBs. The synergy effects between MOCP and MnO₂ may open new opportunities for the development of low-cost, high performance rechargeable aqueous batteries.

中文翻译：

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使用多孔金属-有机配位聚合物纳米片阴极的高容量，长寿命的水性可充电锌电池†

水性锌离子电池（AZIBs）由于其低成本，环保和材料丰富而受到越来越多的关注。然而，在阴极材料中插入锌离子是具有挑战性和复杂的。为了解决上述问题，我们演示了AZIBs系统，该系统由多孔金属-有机配位聚合物（MOCP）纳米片阴极，Zn箔阳极和ZnSO ₄ / MnSO ₄溶液电解质组成。锌电池在150 mA g ^-1时可提供240.3 mA hg ^-1的高可逆容量，在600 mA g ^-1的1500个循环中可提供约100％的出色容量保持率。优异的电化学性能归因于MnSO _4的添加，这导致形成MnO ₂，并且MnO ₂可以增强AZIBs的电化学性能。MOCP和MnO ₂之间的协同效应可能为开发低成本，高性能可充电水性电池提供新的机会。