@article{Peng2025, 
author = {Yue Peng and Pengfei Bi and Xu Zhu and Peitao Liu and Meijing Ren and Yanqing Zu and Xiaodong Li and Ailing Feng},
title = {Metal–Organic Framework-Derived CoOX/Co9S8@NC Nanocomposites Regulated by Oxygen and Sulfur Dual Vacancies as Efficient Trifunctional Electrocatalysts},
year = {2025},
journal = {Energy Material Advances},
volume = {6},
pages = {0206},
url = {https://www.sciopen.com/article/10.34133/energymatadv.0206},
doi = {10.34133/energymatadv.0206},
abstract = {The slow kinetics of oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and hydrogen evolution reaction (HER) pose important challenges to energy storage. Defect engineering offers an effective strategy to enhance the performance of electrocatalytic materials. In this study, we synthesized trifunctional catalysts (CoOX/Co9S8@NC) derived from cobalt-based metal–organic frameworks modified with oxygen-sulfur double vacancies. These vacancies improve catalytic activity by increasing active sites and enhancing charge-transfer capacity. The CoOX/Co9S8@NC catalyst demonstrates outstanding ORR and OER bifunctional activity (ΔE = 0.63 V) and HER performance comparable to noble metal catalysts. Liquid zinc-air batteries exhibited superior cycling stability (2,520 cycles at 2 mA/cm2). This defect engineering strategy presents a novel pathway for developing high-performance electrocatalysts and holds important potential for energy-conversion technologies.}
}