Single-atom Al precisely modulate the strain of Pt3Co intermetallic for superior oxygen catalytic performance - Details

author：

Indexed by：

Abstract：

Precisely　controlling　the　strain　of　Pt-based　intermetallic　to　ensure　high　performance　and　stability　is　a　massive　task　for　sustainable　proton-exchange-membrane-fuel-cells.　Herein,　the　Al　single-atom　was　trapped　into　the　L12-Pt3Co　intermetallic　core　to　precisely　tailor　the　strain　state　on　the　Pt-skin　for　fast　oxygen　reduction　reaction　kinetics.　Theoretical　calculations　firstly　predicted　that　only　tailored　tension　can　accelerate　the　protonation　of　O2　on　L12-Pt3Co@Pt　without　creating　an　additional　energy　barrier　for　subsequent　oxygen-containing　intermediates　desorption.　Experimentally,　Al　single-atom　confined　in　the　L12-Pt3Co　lattice　by　substituting　partial　Co　occupancy,　imposing　tailored　∼　0.2　%　tension　on　Pt-skin　compared　to　the　L12-Pt3Co.　L12-Al-Pt3Co@Pt/C　exhibits　enhanced　mass　activity　which　is　ten-time　improvement　over　commercial　Pt/C.　More　significantly,　XAS　and　DFT　results　reveal　that　the　Al　single-atom　can　strengthen　the　Pt-Co　bonding,　enhancing　the　stability　of　L12-Al-Pt3Co@Pt/C　in　oxygen　reduction.　This　work　provides　an　avenue　to　design　the　strain　by　single-atom　for　sustainable　energy　conversion　technologies.　©　2024　Elsevier　B.V.

Keyword：

Aluminum Atomic layer deposition Atoms Binary alloys Cobalt alloys Design for testability Electrolytic reduction Intermetallics Oxygen Platinum alloys Proton exchange membrane fuel cells (PEMFC) Reaction kinetics

Community：

[ 1 ] [Wu, Wei]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350108, China
[ 2 ] [Qu, Wei]PEM Fuel Cell Catalyst Research and Development Center, Shenzhen Academy of Aerospace Technology, Shenzhen; 518057, China
[ 3 ] [Wang, Zichen]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350108, China
[ 4 ] [Tan, Yangyang]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350108, China
[ 5 ] [Chen, Runzhe]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350108, China
[ 6 ] [Chen, Suhao]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350108, China
[ 7 ] [Lv, Haifeng]PEM Fuel Cell Catalyst Research and Development Center, Shenzhen Academy of Aerospace Technology, Shenzhen; 518057, China
[ 8 ] [Zhong, Jun]Institute of Functional Nano and Soft Materials Laboratory (FUNSOM), Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou; 215123, China
[ 9 ] [Cheng, Niancai]College of Materials Science and Engineering, Fuzhou University, Fuzhou; 350108, China

Reprint 's Address：

Email：

Show more details

Related Keywords：

Air Feeding Adaptive Backstepping Sliding Mode Control for Automotive Fuel Cell System
2021，2021 China Automation Congress, CAC 2021
Effect of Zr-Al co-doping on structure and photocatalytic performance of ZnO photocatalyst
2012，Journal of the Chinese Ceramic Society
Preparation of Ni/MxOy/CeO2-ZrO2 (M=Cu, Ba, Al) composite catalysts and their catalytic performance in methane partial oxidation
2014，Chinese Journal of Rare Metals
Polymer electrolyte membrane fuel cell oxygen excess ratio regulation by using non-linear sliding-mode controller
2016，21st World Hydrogen Energy Conference 2016, WHEC 2016

Source ：

Chemical Engineering Journal

ISSN： 1385-8947

Year： 2024

Volume： 491

1 3 . 4 0 0

JCR@2023

Cited Count：

WoS CC Cited Count：

SCOPUS Cited Count： 1

ESI Highly Cited Papers on the List： 0 Unfold All

WanFang Cited Count：

Chinese Cited Count：

30 Days PV： 5

Affiliated Colleges：

材料科学与工程学院本学院/部未明确归属的数据

Get Fulltext

DOI Library Discovery Baidu Scholar Search Engineering Village

Type
Departments

All Years Choose Year From to