|
|
|
|
| LEADER |
01000naa a22002652 4500 |
| 001 |
NLM360478522 |
| 003 |
DE-627 |
| 005 |
20231226083111.0 |
| 007 |
cr uuu---uuuuu |
| 008 |
231226s2023 xx |||||o 00| ||eng c |
| 024 |
7 |
|
|a 10.1002/adma.202302666
|2 doi
|
| 028 |
5 |
2 |
|a pubmed24n1201.xml
|
| 035 |
|
|
|a (DE-627)NLM360478522
|
| 035 |
|
|
|a (NLM)37548180
|
| 040 |
|
|
|a DE-627
|b ger
|c DE-627
|e rakwb
|
| 041 |
|
|
|a eng
|
| 100 |
1 |
|
|a Yi, Seung Yeop
|e verfasserin
|4 aut
|
| 245 |
1 |
0 |
|a Insight into Defect Engineering of Atomically Dispersed Iron Electrocatalysts for High-Performance Proton Exchange Membrane Fuel Cell
|
| 264 |
|
1 |
|c 2023
|
| 336 |
|
|
|a Text
|b txt
|2 rdacontent
|
| 337 |
|
|
|a ƒaComputermedien
|b c
|2 rdamedia
|
| 338 |
|
|
|a ƒa Online-Ressource
|b cr
|2 rdacarrier
|
| 500 |
|
|
|a Date Revised 16.11.2023
|
| 500 |
|
|
|a published: Print-Electronic
|
| 500 |
|
|
|a Citation Status PubMed-not-MEDLINE
|
| 520 |
|
|
|a © 2023 Wiley-VCH GmbH.
|
| 520 |
|
|
|a Atomically dispersed and nitrogen coordinated iron catalysts (Fe-NCs) demonstrate potential as alternatives to platinum-group metal (PGM) catalysts in oxygen reduction reaction (ORR). However, in the context of practical proton exchange membrane fuel cell (PEMFC) applications, the membrane electrode assembly (MEA) performances of Fe-NCs remain unsatisfactory. Herein, improved MEA performance is achieved by tuning the local environment of the Fe-NC catalysts through defect engineering. Zeolitic imidazolate framework (ZIF)-derived nitrogen-doped carbon with additional CO2 activation is employed to construct atomically dispersed iron sites with a controlled defect number. The Fe-NC species with the optimal number of defect sites exhibit excellent ORR performance with a high half-wave potential of 0.83 V in 0.5 M H2 SO4 . Variation in the number of defects allows for fine-tuning of the reaction intermediate binding energies by changing the contribution of the Fe d-orbitals, thereby optimizing the ORR activity. The MEA based on a defect-engineered Fe-NC catalyst is found to exhibit a remarkable peak power density of 1.1 W cm-2 in an H2 /O2 fuel cell, and 0.67 W cm-2 in an H2 /air fuel cell, rendering it one of the most active atomically dispersed catalyst materials at the MEA level
|
| 650 |
|
4 |
|a Journal Article
|
| 650 |
|
4 |
|a atomically dispersed catalysts
|
| 650 |
|
4 |
|a defects
|
| 650 |
|
4 |
|a oxygen reduction reactions
|
| 650 |
|
4 |
|a proton exchange membrane fuel cells
|
| 700 |
1 |
|
|a Choi, Eunho
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Jang, Ho Yeon
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Lee, Seonggyu
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Park, Jinkyu
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Choi, Daeeun
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Jang, Yeju
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Kang, Hojin
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Back, Seoin
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Jang, Segeun
|e verfasserin
|4 aut
|
| 700 |
1 |
|
|a Lee, Jinwoo
|e verfasserin
|4 aut
|
| 773 |
0 |
8 |
|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 35(2023), 46 vom: 02. Nov., Seite e2302666
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
|
| 773 |
1 |
8 |
|g volume:35
|g year:2023
|g number:46
|g day:02
|g month:11
|g pages:e2302666
|
| 856 |
4 |
0 |
|u http://dx.doi.org/10.1002/adma.202302666
|3 Volltext
|
| 912 |
|
|
|a GBV_USEFLAG_A
|
| 912 |
|
|
|a SYSFLAG_A
|
| 912 |
|
|
|a GBV_NLM
|
| 912 |
|
|
|a GBV_ILN_350
|
| 951 |
|
|
|a AR
|
| 952 |
|
|
|d 35
|j 2023
|e 46
|b 02
|c 11
|h e2302666
|