Single atom surface engineering: A new strategy to boost electrochemical activities of Pt catalysts

Zhang，Lei1,2; Wang，Qi3; Li，Lulu4,5; Banis，Mohammad Norouzi2; Li，Junjie2; Adair，Keegan2; Sun，Yipeng2; Li，Ruying2; Zhao，Zhi Jian4,5; Gu，Meng3; Sun，Xueliang2

2022-03-01

10.1016/j.nanoen.2021.106813

Nano Energy   影响因子和分区

2211-2855

Pt-based catalysts are widely applied in several catalytic electrochemical reactions for energy storage and conversion. The improvement of specific activity of Pt is typically achieved by introducing the transition metal to obtain the alloy structure. Different from the traditional alloy structure, herein, we report Pt catalyst modified with Co single atoms obtained by atomic layer deposition (ALD). The as-prepared catalysts show much higher mass activity and excellent stability compared to commercial Pt/C catalysts towards the hydrogen evolution reaction (HER) and oxygen reduction reaction (ORR). The atomic resolution TEM images and X-ray absorption spectroscopy (XAS) indicate the formation of atomically dispersed Co on Pt. First principle calculations reveal that the Co atom affects the electronic structure of the Pt catalysts, which resulted in the high HER and ORR performance. This work provides a new approach for the rational design of highly active and stable Pt-based catalysts, which hold great potential for application in various catalytic reactions.

Atomic layer deposition DFT calculations Electrochemical reactions Single atom Surface engineering

SCI ; EI

英语

通讯

20215111365634

Atoms ; Catalysis ; Catalyst activity ; Design for testability ; Electrolytic reduction ; Electronic structure ; Platinum ; Surface reactions ; X ray absorption spectroscopy

Ore Treatment:533.1 ; Precious Metals:547.1 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Coating Techniques:813.1 ; Atomic and Molecular Physics:931.3 ; Crystal Growth:933.1.2

2-s2.0-85121393490

Scopus

1.College of Chemistry and Environmental Engineering,Shenzhen University,Shenzhen,518060,China
2.Department of Mechanical and Materials Engineering,The University of Western Ontario,London,N6A 5B9,Canada
3.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
4.Key Laboratory for Green Chemical Technology of Ministry of Education,School of Chemical Engineering and Technology,Tianjin University,Tianjin,300072,China
5.Collaborative Innovation Center of Chemical Science and Engineering (Tianjin),Tianjin,300072,China

Zhang，Lei,Wang，Qi,Li，Lulu,et al. Single atom surface engineering: A new strategy to boost electrochemical activities of Pt catalysts[J]. Nano Energy,2022,93.

Zhang，Lei.,Wang，Qi.,Li，Lulu.,Banis，Mohammad Norouzi.,Li，Junjie.,...&Sun，Xueliang.(2022).Single atom surface engineering: A new strategy to boost electrochemical activities of Pt catalysts.Nano Energy,93.

Zhang，Lei,et al."Single atom surface engineering: A new strategy to boost electrochemical activities of Pt catalysts".Nano Energy 93(2022).