MOF‐Derived Hollow CoS Decorated with CeOx Nanoparticles for Boosting Oxygen Evolution Reaction Electrocatalysis

• DOI: 10.1002/ange.201804673
• Publication Date: 2018-05-02T17:19:58Z
• Authors: Huajie Xu; Jing Cao; Changfu Shan; Bingkai Wang; Pinxian Xi; Weisheng Liu; Yu Tang
• Keywords: Oxygen evolution; Nanocages

Abstract Transition‐metal sulfides (TMSs) have emerged as important candidates for oxygen evolution reaction (OER) electrocatalysts. Now a hybrid nanostructure has been decorated with CeO x nanoparticles on the surface of ZIF‐67‐derived hollow CoS through in situ generation. Proper control amount can achieve precise tuning Co 2+ /Co 3+ ratio, especially induced defects, further boosting OER activity. Meanwhile, formation protective thin layer effectively inhibits corrosion by losing cobalt ion species from active into solution. It is thus rare example hetero‐structural electrocatalyst NPs to improve performance TMS nanocage.