In this work, we designed a simple hydrothermal synthetic method for a ZnCo-PBA@α-Co(OH)₂ nanosphere@nanosheet material with good electrochemical properties. The obtained material had a specific capacitance of 423.92 F g⁻¹ at 1 A g⁻¹ and a cycling retention ratio of 78.48% after 1000 cycles at 5 A g⁻¹. A hybrid supercapacitor device (ZnCo-PBA@α-Co(OH)₂//AC) assembled with activated carbon as the negative electrode had a specific capacitance of 122.4 F g⁻¹ at 1 A g⁻¹, a cycling retention rate of 73.53% after 5000 cycles at 5 A g⁻¹, and a very high energy density of 49.13 Wh kg⁻¹ at power density of 1734.0 W kg⁻¹. The significantly improved electrochemical performance of the ZnCo-PBA@α-Co(OH)₂ nanocomposites can be attributed to the positive synergistic effects of the porous structure of the PBA material and the large specific surface area of the α-Co(OH)₂ nanosheets, on the ion permeability and number of active sites in the reinforcing material; thus, this composite is a potential material for use in future energy storage systems.

在这项工作中，我们设计了一种具有良好电化学性能的ZnCo-PBA @α-Co（OH）₂纳米球@纳米片材料的简单水热合成方法。将所得到的材料具有423.92 F G的特定电容^-1 1 A G ^-1，并以5 A G 1000次循环后的78.48％一个循环保持率^-1。一种混合超级电容器装置（碳酸锌-PBA @α-的Co（OH）₂ // AC）与活性炭组装作为负极具有122.4 F G的特定电容^-1 1 A G ^-1，的循环保持率在5 A g ^-1下进行5000次循环后达到73.53％，并且具有49.13 Wh kg ^-1的极高能量密度在1734.0 W kg ^-1的功率密度下。ZnCo-PBA @α-Co（OH）₂纳米复合材料的电化学性能得到显着改善，这可归因于PBA材料的多孔结构和α-Co（OH）₂的大比表面积的正协同效应。纳米片，关于离子渗透性和增强材料中活性位点的数量；因此，这种复合材料是用于未来储能系统的潜在材料。