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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.2c01664
|2 doi
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|a pubmed24n1153.xml
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|a eng
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| 100 |
1 |
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|a Zhao, Ruge
|e verfasserin
|4 aut
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| 245 |
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|a Hierarchically Porous Three-Dimensional (3D) Carbon Nanorod Networks with a High Content of FeNx Sites for Efficient Oxygen Reduction Reaction
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|c 2022
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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 Revised 20.09.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Efficient, durable, and inexpensive electrocatalysts are recommendable for accelerating the kinetics of oxygen reduction reaction and achieving high performance. Herein, with predesigned hierarchically porous silica nanorods as a hard template, hierarchically macro-bimodal meso/microporous 3D carbon interwoven nanorod networks containing a high content of single-atom FeNx species (Fe/RNC) were prepared by melting of precursors and confined pyrolysis within the pores of the hard template. What distinguishes the use of silica nanorods as a hard template is that it not only provides a porous texture for confined pyrolysis of the precursors but also the interwoven texture of the nanorods gives rise to a macroporous mesh-like morphology. Benefiting from the ultrahigh iron content (5.69 wt %) of the FeNx sites, a 3D porous network configuration with high accessibility of active centers, as well as a high specific surface area of 793 m2g-1, the as-prepared Fe/RNC exhibited superior activity and durability for ORR and zinc-air batteries. For comparison, the catalyst Fe/NC-MCM, which was prepared with a similar procedure but with unimodal mesoporous silica MCM-41 nanoparticles as the hard template, possesses a less porous structure and active accessibility and thus exhibits inferior ORR activity. This work provides an effective design/nanoengineering for electrocatalysts in ORR and zinc-air batteries and will inspire more research on accessibility of active sites in non-noble carbon-based electrocatalysts
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|a Journal Article
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| 700 |
1 |
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|a Wang, Huan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Xueyin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Jiawei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Du, Guo
|e verfasserin
|4 aut
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| 700 |
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|a Chen, Tiehong
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 38(2022), 37 vom: 20. Sept., Seite 11372-11381
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:38
|g year:2022
|g number:37
|g day:20
|g month:09
|g pages:11372-11381
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|u http://dx.doi.org/10.1021/acs.langmuir.2c01664
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