• The ultrathin metal–organic-framework (MOF) interphase layer with high mechanical/chemical stability was in situ grown on black phosphorus nanosheets (BPNSs).

• MOF interphase layers as an ordered porous and robust protective layer can facilitate K ion diffusion and accommodate the volume change of the electrode.

• Benefiting from the improved reaction kinetics and enhanced electrode stability, the BPNS@MOF anode for potassium-ion capacitors exhibits outstanding cycle performance.

中文翻译：

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用于混合 K 离子电容器的具有稳定金属有机框架层的铠装黑磷阳极

• 具有高机械/化学稳定性的超薄金属-有机框架（MOF）界面层在黑磷纳米片（BPNS）上原位生长。

• MOF 界面层作为有序的多孔和坚固的保护层可以促进 K 离子扩散并适应电极的体积变化。

• 受益于改进的反应动力学和增强的电极稳定性，用于钾离子电容器的 BPNS@MOF 阳极表现出出色的循环性能。