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Strong Electronic Coupling between Ultrafine Iridium-Ruthenium Nanoclusters and Conductive, Acid-Stable Tellurium Nanoparticle Support for Efficient and Durable Oxygen Evolution in Acidic and Neutral Media
Xu, Junyuan1; Lian, Zan2; Wei, Bin1; Li, Yue1,3; Bondarchuk, Oleksandr1; Zhang, Nan1; Yu, Zhipeng1,4; Araujo, Ana1; Amorim, Isilda1,3; Wang, Zhongchang1; Li, Bo2; Liu, Lifeng1
Corresponding AuthorWang, Zhongchang(zhongchang.wang@inl.int) ; Li, Bo(boli@imr.ac.cn) ; Liu, Lifeng(lifeng.liu@inl.int)
2020-03-20
Source PublicationACS CATALYSIS
ISSN2155-5435
Volume10Issue:6Pages:3571-3579
AbstractProton exchange membrane water electrolysis (PEM-WE) has emerged as a promising technology for hydrogen production and shows substantial advantages over conventional alkaline water electrolysis. To enable efficient PEM-WE in acidic media, iridium (Ir)- or ruthenium (Ru)-based catalysts are indispensable to drive the thermodynamically and kinetically demanding oxygen evolution reaction (OER). However, developing Ir/Ru catalysts with high efficiency and long-term durability still remains a formidable challenge. Herein, we report one-pot hydrothermal synthesis of ultrafine IrRu intermetallic nanoclusters loaded on conductive, acid-stable, amorphous tellurium nanoparticle support (IrRu@Te). Benefiting from the large exposed electrocatalytically active surface of ultrafine IrRu clusters and the strong electronic coupling between IrRu and Te support, the as-obtained IrRu@Te catalysts show good catalytic performance for the OER in strong acidic electrolyte (i.e., 0.5 M H2SO4), requiring overpotentials of only 220 and 303 mV to deliver 10 and 100 mA cm(-2) and able to sustain continuous OER electrolysis up to 20 h at 10 mA cm(-2) with minimal degradation. Moreover, IrRu@Te exhibits high specific activity, illustrating intrinsically better performance compared with that of unsupported IrRu and other commercial Ir- and Ru-based catalysts. It also demonstrates unprecedentedly high mass activity of 590 A g(IrRu)(-1) at an overpotential of 270 mV, outperforming most Ir- and Ru-based OER catalysts reported in the literature. Furthermore, IrRu@Te catalysts reveal good OER performance in neutral electrolyte as well, holding great potential to be used for PEM-WE in environmentally friendly conditions. Density functional theory (DFT) calculations based on oxidized IrRu confirm that the catalyst/support coupling results in a lower energy barrier for the oxygen-oxygen bonding formation, offering a rational explanation to the experimentally observed OER performance.
Keywordelectrocatalysis oxygen evolution reaction IrRu nanocluster tellurium support electronic coupling
Funding OrganizationPortuguese Foundation of Science and Technology (FCT) ; Natural Science Foundation of China ; European Regional Development Fund (ERDF) through COMPETE2020 programme ; FCT
DOI10.1021/acscatal.9b05611
Indexed BySCI
Language英语
Funding ProjectPortuguese Foundation of Science and Technology (FCT)[IF/2014/01595] ; Natural Science Foundation of China[21573255] ; European Regional Development Fund (ERDF) through COMPETE2020 programme ; FCT[POCI-01-0145-FEDER-030674]
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
WOS IDWOS:000526394500008
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/138220
Collection中国科学院金属研究所
Corresponding AuthorWang, Zhongchang; Li, Bo; Liu, Lifeng
Affiliation1.Int Iberian Nanotechnol Lab INL, P-4715330 Braga, Portugal
2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
3.Univ Minho, Ctr Chem, Chem Dept, P-4710057 Braga, Portugal
4.Univ Porto, Fac Engn, LCM, LSRE, P-4200465 Porto, Portugal
Recommended Citation
GB/T 7714
Xu, Junyuan,Lian, Zan,Wei, Bin,et al. Strong Electronic Coupling between Ultrafine Iridium-Ruthenium Nanoclusters and Conductive, Acid-Stable Tellurium Nanoparticle Support for Efficient and Durable Oxygen Evolution in Acidic and Neutral Media[J]. ACS CATALYSIS,2020,10(6):3571-3579.
APA Xu, Junyuan.,Lian, Zan.,Wei, Bin.,Li, Yue.,Bondarchuk, Oleksandr.,...&Liu, Lifeng.(2020).Strong Electronic Coupling between Ultrafine Iridium-Ruthenium Nanoclusters and Conductive, Acid-Stable Tellurium Nanoparticle Support for Efficient and Durable Oxygen Evolution in Acidic and Neutral Media.ACS CATALYSIS,10(6),3571-3579.
MLA Xu, Junyuan,et al."Strong Electronic Coupling between Ultrafine Iridium-Ruthenium Nanoclusters and Conductive, Acid-Stable Tellurium Nanoparticle Support for Efficient and Durable Oxygen Evolution in Acidic and Neutral Media".ACS CATALYSIS 10.6(2020):3571-3579.
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