期刊
ENERGY & ENVIRONMENTAL SCIENCE
卷 4, 期 2, 页码 499-504出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0ee00518e
关键词
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资金
- ARPA-E [DE-AR0000036]
- NSF [DMR-0819762, CHE-0533150, CHE-0939178, EAR0814242]
- AFOSR [FA9550-09-1-0689]
- Chesonis Family Foundation
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [0802907] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [819762] Funding Source: National Science Foundation
A high surface area electrode is functionalized with cobalt-based oxygen evolving catalysts (Co-OEC = electrodeposited from pH 7 phosphate, Pi, pH 8.5 methylphosphonate, MePi, and pH 9.2 borate electrolyte, Bi). Co-OEC prepared from MePi and operated in Pi and Bi achieves a current density of 100 mA cm(-2) for water oxidation at 442 and 363 mV overpotential, respectively. The catalyst retains activity in near-neutral pH buffered electrolyte in natural waters such as those from the Charles River (Cambridge, MA) and seawater (Woods Hole, MA). The efficacy and ease of operation of anodes functionalized with Co-OEC at appreciable current density together with its ability to operate in near neutral pH buffered natural water sources bodes well for the translation of this catalyst to a viable renewable energy storage technology.
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