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Boosting Electrochemical Water Oxidation with Metal Hydroxide Carbonate Templated Prussian Blue Analogues

Title
Boosting Electrochemical Water Oxidation with Metal Hydroxide Carbonate Templated Prussian Blue Analogues
Author
백운규
Keywords
electrocatalysts; layered hydroxides; Prussian blue analogues; templated synthesis; water oxidation
Issue Date
2018-01
Publisher
WILEY-V C H VERLAG GMBH
Citation
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, v. 57, no. 5, page. 1241-1245
Abstract
The development of efficient and stable catalyst systems with low-cost, abundant, and non-toxic materials is the primary demand for electrochemical water oxidation. A unique method is reported for the syntheses of metal hydroxide carbonate templated Prussian blue analogues (PBAs) on carbon cloth and their outstanding water oxidation activities in alkaline medium. The best water oxidation activity is obtained with cobalt hydroxide carbonate templated t-Co-II-Co-III with an overpotential as low as 240 mV to reach a current density of 10 mAcm(-2). It produces constant current over 50 h in chronoamperometric measurements. Moreover, the catalysts outperform the activities of the PBAs prepared without any template and even the noble metal catalyst RuO2. Spectroscopic and microscopic studies show that the PBAs are transformed into layered hydroxide-oxyhydroxide structures during electrochemical process and provide the active sites for the water oxidation.
URI
https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.201710809http://repository.hanyang.ac.kr/handle/20.500.11754/116966
ISSN
1433-7851; 1521-3773
DOI
10.1002/anie.201710809
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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