Single-atom surface anchoring strategy via atomic layer deposition to achieve dual catalysts with remarkable electrochemical performance

Song, Zhongxin1; Wang, Qi2; Li, Junjie3; Adair, Keegan3; Li, Ruying3; Zhang, Lei1; Gu, Meng2; Sun, Xueliang3

2023-04-01

10.1002/eom2.12351

ECOMAT   影响因子和分区

2567-3173

Pt-Ir catalysts have been widely applied in unitized regenerative fuel cells due to their great activity for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). However, the application of noble metals is seriously hindered by their high cost and low abundance. To reduce the noble metals loading and catalyst cost, the atomic layer deposition is applied to selectively surface anchoring of Ir single atoms (SA) on Pt nanoparticles (NP). With the formation of SA-NP composite structure, the Ir-SA-Pt-NP catalyst exhibits significantly improved performance, achieving 2.0- and 90-times mass activity by comparison with the benchmark Pt/C catalyst for the ORR and OER, respectively. Density functional theory calculations indicate that the SA-NP cooperation synergy endows the Ir-SA-Pt-NP catalyst to surpass the bifunctional catalytic activity limit of Pt-Ir NPs. This work provides a novel strategy for the construction of high-performing dual catalyst through designing the single atom anchoring on NPs.

atomic layer deposition electrochemical oxygen reaction Pt-Ir dual catalyst single atom-nanoparticle cooperation

SCI

英语

通讯

National Natural Science Foundation of China["22279079","22075203","21905179"] ; Guangdong Science and Technology Department Program[2021QN02L252] ; Shenzhen Science and Technology Programs["20220810133521001","20220809165014001"] ; Natural Science Foundation of SZU["000002111605","000002112215"]

Chemistry ; Science & Technology - Other Topics ; Materials Science

Chemistry, Physical ; Green & Sustainable Science & Technology ; Materials Science, Multidisciplinary

WOS:000978677400001

WILEY

Web of Science

1.Shenzhen Univ, Coll Chem & Environm Engn, Shenzhen, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen, Peoples R China
3.Univ Western Ontario, Dept Mech & Mat Engn, London, ON, Canada

Song, Zhongxin,Wang, Qi,Li, Junjie,et al. Single-atom surface anchoring strategy via atomic layer deposition to achieve dual catalysts with remarkable electrochemical performance[J]. ECOMAT,2023,5(7).

Song, Zhongxin.,Wang, Qi.,Li, Junjie.,Adair, Keegan.,Li, Ruying.,...&Sun, Xueliang.(2023).Single-atom surface anchoring strategy via atomic layer deposition to achieve dual catalysts with remarkable electrochemical performance.ECOMAT,5(7).

Song, Zhongxin,et al."Single-atom surface anchoring strategy via atomic layer deposition to achieve dual catalysts with remarkable electrochemical performance".ECOMAT 5.7(2023).