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Identifying the electrocatalytic active sites of a Ru-based catalyst with high Faraday efficiency in CO2-saturated media for an aqueous Zn-CO2 system
Kim, J; Yang, YJ; Seong, A; Noh, HJ; Kim, C; Joo, S; Cho, A; Zhang, LJ; Zhou, J; Wang, JQ; Han, JW; Mahmood, J; Baek, JB; Kim, G
2020
Source PublicationJOURNAL OF MATERIALS CHEMISTRY A
ISSN2050-7488
Volume8Issue:30Pages:14927-14934
Subtype期刊论文
AbstractDeveloping a cost-effective, scalable, and efficient electrocatalyst for the hydrogen evolution reaction (HER) is the heart of producing pure hydrogen in practical applications. In this work, a unique approach to allow ruthenium (Ru) nanoparticles on carboxyl-functionalized porous sphere carbon (CF-Ru@PSC) for an aqueous Zn-CO2 system is reported. The CF-Ru@PSC catalyst was produced by inducing additional junction sites between metallic Ru and the carbon substrate for enhanced HER properties under a CO2 saturated condition. The strongly bonded Ru-C caused electron transfer from the bottom side of the metallic Ru to the PSC substrate, leading to efficient hydrogen adsorption energy of the surface. The DFT calculations and XAFS investigation suggested that the reconstructed electronic configuration from the Ru-C linkage acted as an efficient active site for HER. The CF-Ru@PSC electrocatalyst presented a high turnover frequency of 2.70H(2) s(-1) at an overpotential of 0.20 V in the CO2-saturated condition and high Faraday efficiency (98.2%) over 1000 min in the aqueous Zn-CO2 system.
KeywordHYDROGEN EVOLUTION REACTION DOPED GRAPHENE HOLEY-GRAPHENE PERFORMANCE DURABILITY MECHANISM CO2 PH
DOI10.1039/d0ta03050c
Indexed BySCI ; EI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/32918
Collection中科院上海应用物理研究所2011-2020年
Affiliation1.Ulsan Natl Inst Sci & Technol UNIST, Dept Energy Engn, Ulsan 44919, South Korea
2.Pohang Univ Sci & Technol POSTECH, Dept Chem Engn, Pohang 37673, South Korea
3.Chinese Acad Sci, Shanghai Inst Appl Phys, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China
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GB/T 7714
Kim, J,Yang, YJ,Seong, A,et al. Identifying the electrocatalytic active sites of a Ru-based catalyst with high Faraday efficiency in CO2-saturated media for an aqueous Zn-CO2 system[J]. JOURNAL OF MATERIALS CHEMISTRY A,2020,8(30):14927-14934.
APA Kim, J.,Yang, YJ.,Seong, A.,Noh, HJ.,Kim, C.,...&Kim, G.(2020).Identifying the electrocatalytic active sites of a Ru-based catalyst with high Faraday efficiency in CO2-saturated media for an aqueous Zn-CO2 system.JOURNAL OF MATERIALS CHEMISTRY A,8(30),14927-14934.
MLA Kim, J,et al."Identifying the electrocatalytic active sites of a Ru-based catalyst with high Faraday efficiency in CO2-saturated media for an aqueous Zn-CO2 system".JOURNAL OF MATERIALS CHEMISTRY A 8.30(2020):14927-14934.
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