近日，同济大学谭飞团队报道了MOF衍生的Co-Mo₂C异质结与界面电子调制用于氧还原反应和锌-空气电池。该研究于2025年11月5日发表在《结构化学》杂志上。

锌空气电池（ZABs）因其高能量密度、安全性和环境友好性而成为下一代储能系统的有潜力候选者。然而，它们的效率受到缓慢的氧还原反应（ORR）动力学的阻碍。构建具有优化界面电子结构的异质结是提高ORR活性的一种很有前景的方法。

研究组报道了一种由ZnCoMo-HZIF金属有机骨架（ZnCoMo-HZIF）包裹在氮掺杂碳（Co-Mo₂C@NC）内的Co–Mo₂C异质结。Co与Mo₂C之间的紧密界面使得Co与Mo₂C之间存在强电子耦合，导致了界面电荷的重新分配，优化了Co活性位点的d波段中心。这种电子调制显著提高了氧中间体的吸附，降低了能垒。因此，Co-Mo₂C@NC具有出色的ORR性能，半波电位（E_1/2）高达0.85V，塔菲尔斜率低至94.7 mV dec^-1，且长期稳定良好。此外，Co-Mo₂C@NC作为锌-空气电池的空气阴极，具有优异的动力性能和良好的循环稳定性。

附：英文原文

Title: MOF derived Co–Mo2C heterojunctions with interfacial electronic modulation for oxygen reduction reaction and zinc-air batteries

Author: anonymous

Issue&Volume: 2025-11-05

Abstract: Zinc-air batteries (ZABs) have emerged as promising candidates for next-generation energy storage systems due to their high energy density, safety, and environmental benignity. However, their efficiency is hindered by sluggish oxygen reduction reaction (ORR) kinetics. Constructing heterojunction with optimized interfacial electronic structure has emerged as a promising approach to enhance ORR activity. Herein, we report a Co–Mo2C heterojunction encapsulated within nitrogen-doped carbon (Co–Mo2C@NC) derived from a ZnCoMo-based metal–organic framework (ZnCoMo–HZIF). The intimate interface between Co and Mo2C enables the strong electronic coupling, which induces the interfacial charge redistribution and optimizes the d-band center of Co active sites. This electronic modulation significantly enhances the oxygen intermediate adsorption and lowers the energy barrier. As a result, Co–Mo2C@NC delivers outstanding ORR performance with a high half-wave potential (E1/2) of 0.85V, a low Tafel slope of 94.7mVdec-1, and a good long-term stability. Additionally, Co–Mo2C@NC as the air cathode in a zinc-air battery exhibits superior power performance and outstanding cycling stability.

DOI: 10.1016/j.cjsc.2025.100796

Source: http://cjsc.ac.cn/cms/issues/924