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Boosting Electrocat...
Boosting Electrocatalytic Water Oxidation by Creating Defects and Lattice-Oxygen Active Sites on Ni-Fe Nanosheets
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Chen, C. (författare)
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Zhang, P. (författare)
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Wang, M. (författare)
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Zheng, D. (författare)
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Chen, J. (författare)
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Li, F. (författare)
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Wu, X. (författare)
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Fan, K. (författare)
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- Sun, Licheng, 1962- (författare)
- KTH,Molekylär elektronik, CMD,Organisk kemi
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(creator_code:org_t)
- 2020-08-04
- 2020
- Engelska.
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Ingår i: ChemSusChem. - : Wiley-VCH Verlag. - 1864-5631 .- 1864-564X. ; 13:18, s. 5067-5072
- Relaterad länk:
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https://doi.org/10.1...
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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
- Layered nickel-iron oxide/hydroxide nanosheets have proven to be the most efficient catalyst for the water oxidation reaction. Introducing structural defects to the nanosheets is a particularly attractive method for increasing the number of active sites and tailoring the intrinsic electronic properties. Herein, defects were introduced on Ni−Fe nanosheets through sequentially electrodoping and dedoping the surface of the material with tetramethylammonium ions. The as-prepared defect-rich Ni−Fe nanosheets showed an enhanced catalytic performance for the oxygen evolution reaction (OER) compared with conventional NiFe layered double hydroxides (LDHs), exhibiting an overpotential of only 172 mV at the current density of 10 mA cm−2. The relationship between pH and OER activity indicated that the lattice oxygens participated in the catalytic OER process as active sites. This work provides new insights into the understanding of the structure-activity relationship of layered materials and helps to develop new methods to implement defects on such frameworks aided by organic molecules.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- Binary alloys
- Electronic properties
- Iron oxides
- Nanosheets
- Nickel oxide
- Oxygen
- Catalytic performance
- Efficient catalysts
- Layered double hydroxides
- Number of active sites
- Organic molecules
- Oxygen evolution reaction (oer)
- Structure activity relationships
- Tetramethylammonium ions
- Iron alloys
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- Av författaren/redakt...
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Chen, C.
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Zhang, P.
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Wang, M.
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Zheng, D.
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Chen, J.
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Li, F.
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visa fler...
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Wu, X.
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Fan, K.
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Sun, Licheng, 19 ...
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visa färre...
- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Kemi
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och Materialkemi
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ChemSusChem
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Kungliga Tekniska Högskolan