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Nitrogen‐doped Graphene Chainmail Wrapped IrCo Alloy Particles on Nitrogen‐doped Graphene Nanosheet for Highly Active and Stable Full Water Splitting
Author(s) -
Si Zhang,
Lv Zaozao,
Lu Luhua,
Liu Muye,
Chen Ying,
Jin Hongyun,
Tian Xiaocong,
Dai Kai,
Liu Jinghai,
Song Weiguo
Publication year - 2019
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201900926
Subject(s) - water splitting , graphene , electrocatalyst , nanosheet , oxygen evolution , materials science , bifunctional , catalysis , noble metal , chemical engineering , cobalt , inorganic chemistry , nanotechnology , metal , chemistry , electrochemistry , metallurgy , electrode , photocatalysis , organic chemistry , engineering
Electrocatalysts have been used to split water into hydrogen and oxygen for their advantages in clean energy technologies. To reduce cost and enhance stability of electrocatalysts, intensive works have been done in recent decades. Although research on noble‐metal free electrocatalysts has achieved great progress, their full water splitting performance is still incomparable to that of noble metal based catalysts. For this reason, reducing content of noble metal in catalysts is a more practical way. In this work, we report our recent progress on developing bifunctional electrocatalyst based on nitrogen‐doped graphene chainmail wrapped IrCo alloy particles on nitrogen‐doped graphene (NG@IrCo/NG). Benefited from strong interaction among iridium, cobalt and nitrogen‐doped graphene, impressively high electrocatalytic activity of hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in both acid and alkaline solutions, which are comparable to commercially used Pt/C and IrO 2 electrocatalysts respectively, is found. Catalyst with the structure of nitrogen doped chainmail wrapping on metal core is found to have highly stable full water splitting performance.