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240229s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202314077
|2 doi
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|a pubmed24n1432.xml
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|a eng
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|a Shi, Lei
|e verfasserin
|4 aut
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|a Stable and High-performance Flow H2-O2 Fuel Cells with Coupled Acidic Oxygen Reduction and Alkaline Hydrogen Oxidation Reactions
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|c 2024
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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
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|2 rdacarrier
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|a Date Revised 07.06.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2024 Wiley‐VCH GmbH.
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|a Conventional H2-O2 fuel cells suffer from the low output voltage, insufficient durability, and high-cost catalysts (e.g., noble metals). Herein, this work reports a conceptually new coupled flow fuel cell (CF-FC) by coupling asymmetric electrolytes for acidic oxygen reduction reaction and alkaline hydrogen oxidation reaction. By introducing an electrochemical neutralization energy, the newly-developed CF-FCs possess a significantly increased theoretical open-circuit voltage. Specifically, a CF-FC based on a typical transition metal single-atom Fe-N-C cathode catalyst demonstrates a high electricity output up to 1.81 V and durability with an ultrahigh retention of 91% over 110 h, far superior to the conventional fuel cells (usually, < 1.0 V, < 50% retention over 20 h). The output performance can even be significantly enhanced easily by connecting multiple CF-FCs into the parallel, series, or combined parallel-series connections at a fractional cost of that for the conventional H2-O2 fuel cells, showing great potential for large-scale practical applications. Thus, this study provides a platform to transform conventional fuel cell technology through the rational design and development of advanced energy conversion and storage devices by coupling different electrocatalytic reactions
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|a Journal Article
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|a H2‐O2 fuel cells
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|a acidic oxygen reduction reaction
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|a coupled flow fuel cell
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|a electrochemical neutralization energy
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| 650 |
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|a high durability
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|a Liu, Dong
|e verfasserin
|4 aut
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| 700 |
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|a Lin, Xuanni
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cheng, Ruyi
|e verfasserin
|4 aut
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|a Liu, Feng
|e verfasserin
|4 aut
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|a Kim, Changmin
|e verfasserin
|4 aut
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|a Hu, Chuangang
|e verfasserin
|4 aut
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|a Qiu, Jieshan
|e verfasserin
|4 aut
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| 700 |
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|a Amal, Rose
|e verfasserin
|4 aut
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| 700 |
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|a Dai, Liming
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 36(2024), 23 vom: 02. Juni, Seite e2314077
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:36
|g year:2024
|g number:23
|g day:02
|g month:06
|g pages:e2314077
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|u http://dx.doi.org/10.1002/adma.202314077
|3 Volltext
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