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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202001136
|2 doi
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|a pubmed24n1048.xml
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|a (DE-627)NLM314499040
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|a (NLM)32876959
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Liu, Xiong
|e verfasserin
|4 aut
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|a Reconstruction-Determined Alkaline Water Electrolysis at Industrial Temperatures
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|c 2020
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 07.10.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2020 Wiley-VCH GmbH.
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|a Evaluating the alkaline water electrolysis (AWE) at 50-80 °C required in industry can veritably promote practical applications. Here, the thermally induced complete reconstruction (TICR) of molybdate oxygen evolution reaction (OER) pre-catalysts at 51.9 °C and its fundamental mechanism are uncovered. The dynamic reconstruction processes, the real active species, and stereoscopic structural characteristics are identified by in situ low-/high-temperature Raman, ex situ microscopy, and electron tomography. The completely reconstructed (CR) catalyst (denoted as cat.-51.9) is interconnected by thermodynamically stable (oxy)hydroxide nanoparticles, with abundant boundaries and low crystallinity. For alkaline OER, cat.-51.9 exhibits a low overpotential (282.3 mV at 20 mA cm-2 , 25.0 °C) and ultrastable catalysis at 51.9 °C (250 h, with a negligible activity decay of 19.6 µV h-1 ). The experimental observations combined with theoretical analyses confirm the fast catalytic kinetics enabled by the co-effect of boundaries and vacancies. The coupled cat.-51.9 and MoO2 -Ni hydrogen-evolving arrays provide stable electrolysis operation at 51.9 °C for 220 h. This work uncovers new reconstruction phenomenon of pre-catalysts under realistic conditions and exceptional durability of CR catalysts toward practical high-temperature AWE
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|a Journal Article
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|a alkaline water electrolysis
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|a complete reconstruction
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| 650 |
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|a grain/phase boundaries
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| 650 |
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4 |
|a in situ low-/high-temperature Raman
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| 650 |
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|a industrial temperatures, nanowire arrays
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| 700 |
1 |
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|a Guo, Ruiting
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ni, Kun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xia, Fanjie
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Niu, Chaojiang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wen, Bo
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Meng, Jiashen
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wu, Peijie
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wu, Jinsong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wu, Xiaojun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Mai, Liqiang
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 32(2020), 40 vom: 02. Okt., Seite e2001136
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:32
|g year:2020
|g number:40
|g day:02
|g month:10
|g pages:e2001136
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|u http://dx.doi.org/10.1002/adma.202001136
|3 Volltext
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