Developing high mass loading cathodes with high capacity and durable life cycles is greatly worthwhile and challenging for alkaline aqueous rechargeable Zn-based batteries (AAZBs). Herein, we demonstrate an efficient zinc-induced strategy to rationally develop Zn-Ni-Co carbonate hydroxides/hydroxides heterostructure nanosheet array with an extremely high mass loading of 9.2 mg cm⁻² on Ni foam (ZNC/NF) as such a superior cathode for AAZBs. It is discovered that Ni-Co hydroxide nanowires can be transformed into Zn-Ni-Co carbonate hydroxides/hydroxides heterostructure nanosheet with rich defect structures after the introduction of Zn during the synthetic process. The formed heterostructures and rich defect structures can enhance ion and electron transfer efficiency, thus ensuring the excellent electrochemical performance under high loading condition. Consequently, the ZNC/NF//Zn battery shows an outstanding areal capacity of 2.1 mAh cm⁻² at 5 mA cm⁻², with an ultrahigh energy density of 3.6 mWh cm⁻². Moreover, the battery can still retain a high capacity of 0.42 mAh cm⁻² after 5000 cycles at 50 mA cm⁻², suggesting strong long-term cycling stability. This research enables pave the way for the rational design and manufacture of advanced electrode materials with large mass loadings.

对于碱性水性可充电锌基电池（AAZB）来说，开发具有高容量和持久生命周期的高质量负载阴极非常有价值，但也具有挑战性。在此，我们展示了一种有效的锌诱导策略，合理地开发了在泡沫镍（ZNC/NF）上具有9.2 mg cm ^-2极高质量负载的Zn-Ni-Co碳酸盐氢氧化物/氢氧化物异质结构纳米片阵列作为这种优异的阴极对于 AAZB。研究发现，在合成过程中引入Zn后，Ni-Co氢氧化物纳米线可以转化为具有丰富缺陷结构的Zn-Ni-Co碳酸盐氢氧化物/氢氧化物异质结构纳米片。形成的异质结构和丰富的缺陷结构可以提高离子和电子转移效率，从而保证高负载条件下优异的电化学性能。因此，ZNC/NF//Zn电池在5 mA cm ^-2下表现出2.1 mAh cm ^-2的出色面积容量，以及3.6 mWh cm ^-2的超高能量密度。此外，该电池在50 mA cm ^-2下循环5000次后仍能保持0.42 mAh cm ^-2的高容量，表明具有很强的长期循环稳定性。这项研究为合理设计和制造具有大质量负载的先进电极材料铺平了道路。