Journal
CHEMCATCHEM
Volume 11, Issue 16, Pages 3877-3881Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cctc.201801736
Keywords
Water-splitting; catalysis; renewable energy; electrochemistry; borides
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Funding
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Canada Foundation for Innovation (CFI)
- Dalhousie University
- Beckman Institute of the California Institute of Technology
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Electrochemical water oxidation is an important anodic process necessary to support many cathodic fuel forming processes. Inexpensive materials capable of water oxidation catalysis are necessary to render renewable energy technologies affordable. In this study, titanium diboride (TiB2) microparticles were explored as an oxygen-evolution reaction (OER) electrocatalyst in 1.0 M HClO4. An overpotential of 560 +/- 20 mV was required to generate a current density of 10 mAcm(-2) with a Faradaic efficiency > 96%. TiB2 exhibited a dissolution rate of 0.24 mu gcm(-2)h(-1) which is the slowest rate observed to date for an earth-abundant OER catalyst in acidic electrolyte at pH 0.
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