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Quasi-single-crysta...
Quasi-single-crystalline CoO hexagrams with abundant defects for highly efficient electrocatalytic water oxidation
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Liang, Zuozhong (författare)
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- Huang, Zhehao (författare)
- Stockholms universitet,Institutionen för material- och miljökemi (MMK)
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Yuan, Haitao (författare)
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Yang, Zhiyuan (författare)
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Zhang, Chaochao (författare)
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Xu, Yang (författare)
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Zhang, Wei (författare)
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Zheng, Haoquan (författare)
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Cao, Rui (författare)
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(creator_code:org_t)
- 2018
- 2018
- Engelska.
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Ingår i: Chemical Science. - : Royal Society of Chemistry (RSC). - 2041-6520 .- 2041-6539. ; 9:34, s. 6961-6968
- Relaterad länk:
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https://doi.org/10.1...
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https://pubs.rsc.org...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Defects and structural long-range ordering have been recognized as two crucial characters for advanced electrocatalysts. However, these two features have rarely been achieved together. Herein, we report the preparation of single-crystalline CoO hexagrams and demonstrate their exceptional electrocatalytic properties for water oxidation. The quasi-single-crystalline CoO hexagrams, prepared at the critical phase transition point of -Co(OH)(2)/Co(OH)F hexagrams, possess both abundant oxygen vacancies as defects and structural long-range ordering. The matching between the b-axis of Co(OH)F crystals and the a-axis of -Co(OH)(2) crystals is critical for the formation of the CoO hexagram single crystals. The quasi-single-crystalline CoO hexagrams with abundant defects are highly efficient for water oxidation by delivering a 10 mA cm(-2) current density at a low overpotential of 269 mV in a 1 M KOH aqueous solution.
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
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- art (ämneskategori)
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