过电位
析氧
电催化剂
电流(流体)
氧气
氧化物
空位缺陷
材料科学
分解水
催化作用
电流密度
化学物理
纳米技术
化学
物理
物理化学
结晶学
电极
热力学
电化学
冶金
有机化学
光催化
量子力学
生物化学
作者
Yitian Hu,Lili Li,Jianfa Zhao,Yu‐Cheng Huang,Chang‐Yang Kuo,Jing Zhou,Yalei Fan,Hong‐Ji Lin,Chung‐Li Dong,Chih‐Wen Pao,Jyh‐Fu Lee,Chien‐Te Chen,Changqing Jin,Z. Hu,Jianqiang Wang,Linjuan Zhang
标识
DOI:10.1016/j.apcatb.2023.122785
摘要
Developing efficient electrocatalyst at large current densities to meet the requirement of industrial water splitting is a big challenge today. Herein, we report a class of catalyst, BiCoO3 with pyramidally coordinated Co3+. BiCoO3 exhibits a large current density of 1000 mA cm−2 at a low overpotential of 402 mV and the overpotential even reduces to only 303 mV to achieve 1000 mA cm−2 by replacing Co with Fe, which belongs to the first-class level among large-current-densities electrocatalysts reported so far. Different from artificially created oxygen vacancies to optimize the bonding strength of the intermediate for enhancement of OER activity, BiCoO3 has the rich active sites and the shortest reaction pathway leading to a large current density, as structurally every Co-O cluster has one oxygen vacancy. This work opens a new avenue for enhanced OER activity at high current densities via optimizing the arrangement of ligand vacancies.
科研通智能强力驱动
Strongly Powered by AbleSci AI