Herein, we report a novel metal–organic frameworks (MOF)-derived nanomaterial, this is hollow nano-cuboids composed of NiCoP particles and nanocarbon, which is enriched in appropriate micropores induced by in-situ Zn-sacrificed strategy (NiCoP@C(Zn)). Such abundant micropores (∼0.5 nm, larger than the radius of OH⁻) can supply more ion shuttle channels at multi-directions, greatly-reducing the longitudinal migration time in the hollow structure, resulting in a rather high ion diffusion coefficient (∼10⁻⁸ cm² s⁻¹). This combined with hollow topology show the marked electrolyte-accessibility recognized by experimental and density functional theory (DFT) results, which can adequately-expose the electrochemically active sites, thus birthing a surface-dominated pseudocapacitive behaviors towards high-rate response and high-capacity storage. Due to the robust structural merits and pore character as well as their synergy, the NiCoP@C(Zn) electrode can realize a rather stable cyclability (over 10,000 cycles). Further, we construct the pouch-type supercapacitor based on NiCoP@C(Zn) cathode, which delivers a relatively-good energy output (35.2 Wh kg⁻¹), superior to those of some previously-reported asymmetric supercapacitors. Remarkably, such pouch device can exhibit the triple-high properties, including high mechanical reliability, high safety and high availability in real-word application. This work successfully-discloses the influence of well-matched micropores on pseudocapacitive charge storage, and opens new horizons of developing a high-performance electrode nanomaterial.

在此，我们报道了一种新型金属有机框架（MOF）衍生的纳米材料，这是由 NiCoP 颗粒和纳米碳组成的中空纳米长方体，其富含原位锌牺牲策略诱导的适当微孔（NiCoP@C（锌））。如此丰富的微孔（~0.5 nm，大于OH ^-的半径）可以在多方向提供更多的离子穿梭通道，大大减少中空结构中的纵向迁移时间，从而导致相当高的离子扩散系数（~10 ⁻⁸厘米²秒⁻¹). 这与空心拓扑结构相结合，显示出实验和密度泛函理论 (DFT) 结果所认可的显着电解质可及性，可以充分暴露电化学活性位点，从而产生表面主导的赝电容行为，实现高速率响应和高容量贮存。由于稳健的结构优点和孔隙特性以及它们的协同作用，NiCoP@C(Zn) 电极可以实现相当稳定的循环性能（超过 10,000 次循环）。此外，我们构建了基于 NiCoP@C(Zn) 正极的袋型超级电容器，它提供了相对较好的能量输出（35.2 Wh kg ^-1)，优于之前报道的一些非对称超级电容器。值得注意的是，这种袋装设备可以在实际应用中展现出三重特性，包括高机械可靠性、高安全性和高可用性。这项工作成功地揭示了良好匹配的微孔对赝电容电荷存储的影响，并为开发高性能电极纳米材料开辟了新视野。