Cobalt/Carbon Nanocomposite as Oxygen Evolution Reaction Electrocatalyst | Zendy

Biegun Marcin | Zendy; Chen Xuecheng | Zendy; Mijowska Ewa | Zendy

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Cobalt/Carbon Nanocomposite as Oxygen Evolution Reaction Electrocatalyst

Author(s) -

Biegun Marcin,

Chen Xuecheng,

Mijowska Ewa

Publication year - 2018

Publication title -

chemelectrochem

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 59

ISSN - 2196-0216

DOI - 10.1002/celc.201800355

Subject(s) - overpotential , electrocatalyst , cobalt , oxygen evolution , catalysis , carbonization , materials science , chemical engineering , nanocomposite , carbon fibers , cationic polymerization , electrolysis , inorganic chemistry , oxygen , chemistry , electrochemistry , nanotechnology , polymer chemistry , composite number , composite material , organic chemistry , electrode , scanning electron microscope , engineering , electrolyte

Electrocatalysts based on cobalt are promising catalytic materials for water electrolysis. In this work, We reported a catalyst composed of cobalt nanoparticles embeded in a carbon lattice through synthesis with a cationic polymer (PEI) and carbonization process at three temperatures (800, 900 and 1000 °C). The material obtained at 1000 °C showed the highest activity towards the oxygen evolution reaction (OER) in an alkaline medium (1 M KOH). Moreover, the OER overpotential required to reach 10 mA cm −2 of 296 mV, was lower than for the commercial RuO 2 catalyst. Further, the material also exhibited very good stability in a long‐term stability test at 10 mA cm −2 .

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