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Surface Generation of a Cobalt‐Derived Water Oxidation Electrocatalyst Developed in a Neutral HCO 3 − /CO 2 System
Author(s) -
Joya Khurram Saleem,
Takanabe Kazuhiro,
de Groot Huub J. M.
Publication year - 2014
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201400252
Subject(s) - electrocatalyst , oxygen evolution , cobalt oxide , cobalt , electrolyte , oxide , materials science , catalysis , indium tin oxide , content (measure theory) , inorganic chemistry , computer science , nanotechnology , chemistry , electrochemistry , electrode , metallurgy , organic chemistry , mathematical analysis , mathematics , layer (electronics)
Neutral HCO 3 – /CO 2 is a new electrolyte system for in situ generation of robust and efficient Co‐derived (Co‐Ci) water oxidation electrocatalysts. The Co‐Ci/indium tin oxide system shows a remarkable 2.0 mA cm –2 oxygen evolution current density that is sustained for several hours. 7.5 nmol of electroactive species per cm 2 generates about 109 μmol of O 2 at a rate of 0.51 per mol of catalyst per second.