As a member of transition metal sulfides, Ni₃S₂ has been reported as one type of the effective pseudocapacitive electrode materials for supercapacitors, due to its good electrical conductivity and high electrochemical activity. To further improve the energy density of the Ni₃S₂-based supercapacitors, we propose a novel approach to the Ni₃S₂/Ni₂O₃ heterojunction anchored on N-doped carbon nanosheet aerogels (Ni₃S₂/Ni₂O₃@N-CNA), which is used as the cathode for Zn-ion hybrid supercapacitors with the dual-ion electrolytes. The Ni₃S₂/Ni₂O₃@N-CNA samples can be prepared through the bubble-templated polymerization of pyrrole and the carbonization of the polypyrrole nanosheet hydrogel/Ni²⁺. The Ni₃S₂/Ni₂O₃@N-CNA cathode is immersed into the Li-ion catholyte for Li⁺ storage, while the Zn foil anode is immersed into the Zn-ion anolyte for Zn²⁺ storage. Electrochemical kinetic analysis of the dual-ion hybrid supercapacitor indicates its evident capacitance characteristic. Additionally, theoretical calculations reveal that the Ni₃S₂/Ni₂O₃ heterojunction can facilitate the adsorption and dehydration of a hydrated Li⁺ ion to further play a great role in the enhancement of pseudocapacitance. Based on the novel strategy of the alkaline dual-ion electrolytes, this dual-ion hybrid supercapacitor with the high energy density (64.2 Wh kg⁻¹) opens up a new avenue to develop high-performance Zn-ion hybrid supercapacitors.

作为过渡金属硫化物的一员，Ni ₃ S ₂因其良好的导电性和高电化学活性而被报道为超级电容器的有效赝电容电极材料之一。_{为了进一步提高Ni 3} S ₂基超级电容器的能量密度，我们提出了一种将Ni ₃ S ₂ /Ni ₂ O ₃异质结锚定在N掺杂碳纳米片气凝胶（Ni ₃ S ₂ /Ni ₂ O）上的新方法。 ₃ @N-CNA），用作具有双离子电解质的锌离子混合超级电容器的阴极。Ni ₃ S ₂ /Ni ₂ O ₃ @N-CNA样品可以通过吡咯的气泡模板聚合和聚吡咯纳米片水凝胶/Ni ²⁺的碳化来制备。Ni ₃ S ₂ /Ni ₂ O ₃ @N-CNA 阴极浸入锂离子阴极电解液中用于存储 Li ⁺，而锌箔阳极浸入锌离子阳极电解液中用于存储 Zn ²⁺。双离子混合超级电容器的电化学动力学分析表明其具有明显的电容特性。此外，理论计算表明，Ni ₃ S ₂ /Ni ₂ O _{3异质结可以促进水合Li} ⁺离子的吸附和脱水，从而进一步在赝电容的增强中发挥巨大作用。^{基于碱性双离子电解质的新颖策略，这种具有高能量密度（64.2 Wh kg -1} ）的双离子混合超级电容器开辟了开发高性能锌离子混合超级电容器的新途径。