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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201803372
|2 doi
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|a pubmed24n0961.xml
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|a (DE-627)NLM288534662
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|a (NLM)30216565
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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 |
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|a Nam, Gyutae
|e verfasserin
|4 aut
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|a A Ternary Ni46 Co40 Fe14 Nanoalloy-Based Oxygen Electrocatalyst for Highly Efficient Rechargeable Zinc-Air Batteries
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|c 2018
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 13.11.2018
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Replacing noble-metal-based oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) electrocatalysts is the key to developing efficient Zn-air batteries (ZABs). Here, a homogeneous ternary Ni46 Co40 Fe14 nanoalloy with a size distribution of 30-60 nm dispersed in a carbon matrix (denoted as CNCF-900) as a highly efficient bifunctional electrocatalyst produced via supercritical reaction and subsequent heat treatment at 900 °C is reported. Among all the transition-metal-based electrocatalysts, the C@NCF-900 exhibits the highest ORR performance in terms of half-wave potential (0.93 V) in 0.1 m KOH. Moreover, C@NCF-900 exhibits negligible activity decay after 10 000 voltage cycles with minor reduction (0.006 V). In ZABs, C@NCF-900 outperforms the mixture of Pt/C 20 wt% and IrO2 , cycled over 100 h under 58% depth of discharge condition. Furthermore, density functional theory (DFT) calculations and in situ X-ray absorption spectroscopy strongly support the active sites and site-selective reaction as a plausible ORR/OER mechanism of C@NCF-900
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|a Journal Article
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|a Zn-air batteries
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|a oxygen evolution reaction
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|a oxygen reduction reaction
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|a supercritical reactions
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|a ternary nanoalloys
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|a Son, Yeonguk
|e verfasserin
|4 aut
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|a Park, Sung O
|e verfasserin
|4 aut
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1 |
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|a Jeon, Woo Cheol
|e verfasserin
|4 aut
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1 |
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|a Jang, Haeseong
|e verfasserin
|4 aut
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1 |
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|a Park, Joohyuk
|e verfasserin
|4 aut
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1 |
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|a Chae, Sujong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yoo, Youngshin
|e verfasserin
|4 aut
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1 |
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|a Ryu, Jaechan
|e verfasserin
|4 aut
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| 700 |
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|a Kim, Min Gyu
|e verfasserin
|4 aut
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|a Kwak, Sang Kyu
|e verfasserin
|4 aut
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| 700 |
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|a Cho, Jaephil
|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 30(2018), 46 vom: 15. Nov., Seite e1803372
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:30
|g year:2018
|g number:46
|g day:15
|g month:11
|g pages:e1803372
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|u http://dx.doi.org/10.1002/adma.201803372
|3 Volltext
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