Porous cobalt-iron nitride nanowires as excellent bifunctional electrocatalysts for overall water splitting

Yanyong Wang; Dongdong Liu; Zhijuan Liu; Chao Xie; Jia Huo; Shuangyin Wang

doi:10.1039/c6cc06608a

Porous cobalt-iron nitride nanowires as excellent bifunctional electrocatalysts for overall water splitting

Chem Commun (Camb). 2016 Oct 18;52(85):12614-12617. doi: 10.1039/c6cc06608a.

Authors

Yanyong Wang¹, Dongdong Liu¹, Zhijuan Liu¹, Chao Xie¹, Jia Huo¹, Shuangyin Wang¹

Affiliation

¹ State Key laboratory of Chem/Bio-sensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha, 410082, China. shuangyinwang@hun.edu.cn.

PMID: 27711313
DOI: 10.1039/c6cc06608a

Abstract

Designing highly active, earth-abundant and stable bifunctional electrocatalysts for both the oxygen (OER) and hydrogen (HER) evolution reactions is very crucial to overall water splitting. Herein, we developed nanoparticle-stacked porous Co₃FeN_x (NSP-Co₃FeN_x) nanowires as bifunctional electrocatalysts, exhibiting excellent OER and HER activity with a low overpotential of 222 mV at 20 mA cm^-2 and 23 mV at 10 mA cm^-2, respectively, due to their unique structural advantages with grain boundaries, defects and dislocations. Moreover, the electrocatalysts as bifunctional electrodes show a high performance with 10 mA cm^-2 at a cell voltage of 1.539 V.