催化作用
硫黄
兴奋剂
氧气
电流密度
化学
电流(流体)
无机化学
材料科学
化学工程
光电子学
热力学
有机化学
物理
量子力学
工程类
作者
Guijin Yang,Yong Li,Yujun Fu,Jinyun Li,Jingru Jiao,Weiwei Wang,Dongyang Fang,Chen Cheng,Zhengmei Zhang
标识
DOI:10.1016/j.jpcs.2024.112051
摘要
The development of oxygen evolution reaction (OER) electrocatalysts with excellent stability at high current density is key to achieving efficient hydrogen production, and spinel Co3O4 is a promising alternative material, yet its application to high current density remains challenging. Here, we employ doping engineering to apply Co3O4 modified by S to the OER. The doping of S optimizes the electronic environment of Co and generates richer oxygen defects, leading to excellent catalytic performance and cycling stability at high current density. The best performing S-Co3O4-45@NF catalyst that required 265 mV to achieve 10 mA/cm2. Furthermore, it exhibits outstanding cycling durability at 10, 200 and 1200 mA/cm2 as well as excellent mass transfer performance in multi-step current tests. The present work provides ideas for the development of low-cost and efficient transition metal-based electrocatalysts at high current density.
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