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Article: A general route via formamide condensation to prepare atomically dispersed metal-nitrogen-carbon electrocatalysts for energy technologies

TitleA general route via formamide condensation to prepare atomically dispersed metal-nitrogen-carbon electrocatalysts for energy technologies
Authors
Issue Date2019
Citation
Energy and Environmental Science, 2019, v. 12, n. 4, p. 1317-1325 How to Cite?
AbstractSingle-atom electrocatalysts (SAECs) have gained tremendous attention due to their unique active sites and strong metal-substrate interactions. However, the current synthesis of SAECs mostly relies on costly precursors and rigid synthetic conditions and often results in very low content of single-site metal atoms. Herein, we report an efficient synthesis method to prepare metal-nitrogen-carbon SAECs based on formamide condensation and carbonization, featuring a cost-effective general methodology for the mass production of SAECs with high loading of atomically dispersed metal sites. The products with metal inclusion were termed as formamide-converted metal-nitrogen-carbon (shortened as f-MNC) materials. Seven types of single-metallic f-MNC (Fe, Co, Ni, Mn, Zn, Mo and Ir), two bi-metallic (ZnFe and ZnCo) and one tri-metallic (ZnFeCo) SAECs were synthesized to demonstrate the generality of the methodology developed. Remarkably, these f-MNC SAECs can be coated onto various supports with an ultrathin layer as pyrolysis-free electrocatalysts, among which the carbon nanotube-supported f-FeNC and f-NiNC SAECs showed high performance for the O2 reduction reaction (ORR) and the CO2 reduction reaction (CO2RR), respectively. Furthermore, the pyrolysis products of supported f-MNC can still render isolated metallic sites with excellent activity, as exemplified by the bi-metallic f-FeCoNC SAEC, which exhibited outstanding ORR performance in both alkaline and acid electrolytes by delivering ∼70 and ∼20 mV higher half-wave potentials than that of commercial 20 wt% Pt/C, respectively. This work offers a feasible approach to design and manufacture SAECs with tuneable atomic metal components and high density of single-site metal loading, and thus may accelerate the deployment of SAECs for various energy technology applications.
Persistent Identifierhttp://hdl.handle.net/10722/334588
ISSN
2023 Impact Factor: 32.4
2023 SCImago Journal Rankings: 10.935
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhang, Guoxin-
dc.contributor.authorJia, Yin-
dc.contributor.authorZhang, Cong-
dc.contributor.authorXiong, Xuya-
dc.contributor.authorSun, Kai-
dc.contributor.authorChen, Ruida-
dc.contributor.authorChen, Wenxing-
dc.contributor.authorKuang, Yun-
dc.contributor.authorZheng, Lirong-
dc.contributor.authorTang, Haolin-
dc.contributor.authorLiu, Wen-
dc.contributor.authorLiu, Junfeng-
dc.contributor.authorSun, Xiaoming-
dc.contributor.authorLin, Wen Feng-
dc.contributor.authorDai, Hongjie-
dc.date.accessioned2023-10-20T06:49:13Z-
dc.date.available2023-10-20T06:49:13Z-
dc.date.issued2019-
dc.identifier.citationEnergy and Environmental Science, 2019, v. 12, n. 4, p. 1317-1325-
dc.identifier.issn1754-5692-
dc.identifier.urihttp://hdl.handle.net/10722/334588-
dc.description.abstractSingle-atom electrocatalysts (SAECs) have gained tremendous attention due to their unique active sites and strong metal-substrate interactions. However, the current synthesis of SAECs mostly relies on costly precursors and rigid synthetic conditions and often results in very low content of single-site metal atoms. Herein, we report an efficient synthesis method to prepare metal-nitrogen-carbon SAECs based on formamide condensation and carbonization, featuring a cost-effective general methodology for the mass production of SAECs with high loading of atomically dispersed metal sites. The products with metal inclusion were termed as formamide-converted metal-nitrogen-carbon (shortened as f-MNC) materials. Seven types of single-metallic f-MNC (Fe, Co, Ni, Mn, Zn, Mo and Ir), two bi-metallic (ZnFe and ZnCo) and one tri-metallic (ZnFeCo) SAECs were synthesized to demonstrate the generality of the methodology developed. Remarkably, these f-MNC SAECs can be coated onto various supports with an ultrathin layer as pyrolysis-free electrocatalysts, among which the carbon nanotube-supported f-FeNC and f-NiNC SAECs showed high performance for the O2 reduction reaction (ORR) and the CO2 reduction reaction (CO2RR), respectively. Furthermore, the pyrolysis products of supported f-MNC can still render isolated metallic sites with excellent activity, as exemplified by the bi-metallic f-FeCoNC SAEC, which exhibited outstanding ORR performance in both alkaline and acid electrolytes by delivering ∼70 and ∼20 mV higher half-wave potentials than that of commercial 20 wt% Pt/C, respectively. This work offers a feasible approach to design and manufacture SAECs with tuneable atomic metal components and high density of single-site metal loading, and thus may accelerate the deployment of SAECs for various energy technology applications.-
dc.languageeng-
dc.relation.ispartofEnergy and Environmental Science-
dc.titleA general route via formamide condensation to prepare atomically dispersed metal-nitrogen-carbon electrocatalysts for energy technologies-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1039/c9ee00162j-
dc.identifier.scopuseid_2-s2.0-85064276571-
dc.identifier.volume12-
dc.identifier.issue4-
dc.identifier.spage1317-
dc.identifier.epage1325-
dc.identifier.eissn1754-5706-
dc.identifier.isiWOS:000465275800011-

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