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Ultrathin amorphous...
Ultrathin amorphous cobalt-vanadium hydr(oxy)oxide catalysts for the oxygen evolution reaction
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- Liu, Juzhe (författare)
- Beihang Univ, Beijing Adv Innovat Ctr Biomed Engn, Sch Chem, Beijing 100191, Peoples R China.
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- Ji, Yongfei, 1984- (författare)
- KTH,Teoretisk kemi och biologi
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- Nai, Jianwei (författare)
- Beihang Univ, Beijing Adv Innovat Ctr Biomed Engn, Sch Chem, Beijing 100191, Peoples R China.
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- Niu, Xiaogang (författare)
- Beihang Univ, Beijing Adv Innovat Ctr Biomed Engn, Sch Chem, Beijing 100191, Peoples R China.
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- Luo, Yi, 1965- (författare)
- KTH,Teoretisk kemi och biologi,Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China.
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- Guo, Lin (författare)
- Beihang Univ, Beijing Adv Innovat Ctr Biomed Engn, Sch Chem, Beijing 100191, Peoples R China.
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- Yang, Shihe (författare)
- Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China.;Peking Univ, Shenzhen Grad Sch, Sch Chem Biol & Biotechnol, Guangdong Key Lab Nano Micromat Res, Shenzhen, Peoples R China.
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Beihang Univ, Beijing Adv Innovat Ctr Biomed Engn, Sch Chem, Beijing 100191, Peoples R China Teoretisk kemi och biologi (creator_code:org_t)
- 2018
- 2018
- Engelska.
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Ingår i: Energy & Environmental Science. - : Royal Society of Chemistry. - 1754-5692 .- 1754-5706. ; 11:7, s. 1736-1741
- Relaterad länk:
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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
- Cost efficient and long-term stable catalysts are in great demand for the oxygen evolution reaction (OER), a key process involved in water splitting cells and metal-air batteries. Here, we demonstrate that the ultrathin amorphous cobalt-vanadium hydr(oxy)oxide we synthesized is a highly promising electrocatalytic material for the OER with a low overpotential of 0.250 V (even lower down to 0.215 V when supported on Au foam) at 10 mA cm(-2) and a long stable operation time (170 h) in alkaline media. In combination with in situ X-ray absorption spectral characterization and first-principles simulations, we reveal that the ultrathin, amorphous and alloyed structural characteristics have enabled its facile transformation to the desirable active phase, leading to a dramatically enhanced catalytic activity. Our finding highlights the remarkable advantages of the two-dimensional amorphous material and sheds new light on the design of high-performance electrocatalysts.
Ämnesord
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
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