期刊
CHEMSUSCHEM
卷 10, 期 23, 页码 4699-4703出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201701576
关键词
cobalt; electrocatalysis; electrodes; physical vapor deposition; water oxidation
资金
- Thousand Talents Program of China
- Fundamental Research Funds for Central Universities
- National Natural Science Foundation of China [21101170, 21503126, 21573139]
- Renmin University of China
Artificial photosynthesis requires efficient anodic electrode materials for water oxidation. Cobalt metal thin films are prepared through facile physical vapor deposition (PVD) on various nonconductive substrates, including regular and quartz glass, mica sheet, polyimide, and polyethylene terephthalate (PET). Subsequent surface electrochemical modification by cyclic voltammetry (CV) renders these films active for electrocatalytic water oxidation, reaching a current density of 10mAcm(-2) at a low overpotential of 330mV in 1.0m KOH solution. These electrodes are robust with unchanged activity throughout prolonged chronopotentiometry measurements. This work is thus significant to show that the combination of PVD and CV is very valuable and convenient to fabricate active electrodes on various nonconductive substrates, particularly with flexible polyimide and PET substrates. This efficient, safe and convenient method can potentially be expanded to many other electrochemical applications.
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