Stability of Pd3Pb Nanocubes during Electrocatalytic Ethanol Oxidation

Yu, Xiaoting2,4; Luo, Zhishan5,6; Zhang, Ting2,7,8; Tang, Pengyi7,8; Li, Junshan2,4; Wang, Xiang2,4; Llorca, Jordi9,10; Arbiol, Jordi7,8; Liu, Junfeng1; Cabot, Andreu2,3

2020-03-10

10.1021/acs.chemmater.9b05094

CHEMISTRY OF MATERIALS   影响因子和分区

0897-4756

1520-5002

Intermetallic Pd3Pb nanocrystals with controlled size and cubic geometry exposing (100) facets are synthesized and tested as electrocatalysts for ethanol oxidation in alkaline media. We observe the ethanol oxidation activity and stability to be size-dependent. The 10 nm Pd3Pb nanocrystals display the highest initial current densities, but after few hundred cycles, the current density of smaller nanocrystals becomes much larger. All of the catalysts exhibit a pronounced current decay during the first 500 s of continuous operation, which is associated with the accumulation of strongly adsorbed reaction intermediates, blocking reaction sites. These adsorbed species can be removed by cycling the catalysts or maintaining them at slightly higher potentials for a short period of time to oxidize and later reduce the Pd surface. Such simple cleaning processes, that can be performed during operation breaks without cell disassembly, is sufficient to effectively remove the poisoning species adsorbed on the surface and recover the electrocatalytic activity.

SCI ; EI

英语

其他

MINECO/FEDER[RTI2018-093996-B-C31] ; MINECO/FEDER[GC 2017 SGR 128]

Chemistry ; Materials Science

Chemistry, Physical ; Materials Science, Multidisciplinary

WOS:000519337600030

AMER CHEMICAL SOC

20201008253006

Electrocatalysts ; Lead alloys ; Ethanol ; Palladium alloys ; Oxidation ; Binary alloys ; Reaction intermediates

Lead and Alloys:546.1 ; Precious Metals:547.1 ; Nanotechnology:761 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Organic Compounds:804.1 ; Crystalline Solids:933.1

MATERIALS SCIENCE

Web of Science

1.Jiangsu Univ, Sch Chem & Chem Engn, Inst Energy Res, Zhenjiang 212013, Jiangsu, Peoples R China
2.Catalonia Inst Energy Res, IREC, Barcelona 08930, Spain
3.ICREA, Barcelona 08010, Spain
4.Univ Barcelona, Dept Elect & Biomed Engn, E-08028 Barcelona, Spain
5.Southern Univ Sci & Technol SUSTech, Dept Chem, Shenzhen 518055, Guangdong, Peoples R China
6.Southern Univ Sci & Technol SUSTech, SUSTech Acad Adv Interdisciplinary Studies, Shenzhen 518055, Guangdong, Peoples R China
7.CSIC, Catalan Inst Nanosci & Nanotechnol ICN2, Barcelona 08193, Spain
8.BIST, Barcelona 08193, Spain
9.Univ Politecn Cataluna, EEBE, Dept Chem Engn, Inst Energy Technol, Barcelona 08019, Spain
10.Univ Politecn Cataluna, EEBE, Barcelona Res Ctr Multiscale Sci & Engn, Barcelona 08019, Spain

Yu, Xiaoting,Luo, Zhishan,Zhang, Ting,et al. Stability of Pd3Pb Nanocubes during Electrocatalytic Ethanol Oxidation[J]. CHEMISTRY OF MATERIALS,2020,32(5):2044-2052.

Yu, Xiaoting.,Luo, Zhishan.,Zhang, Ting.,Tang, Pengyi.,Li, Junshan.,...&Cabot, Andreu.(2020).Stability of Pd3Pb Nanocubes during Electrocatalytic Ethanol Oxidation.CHEMISTRY OF MATERIALS,32(5),2044-2052.

Yu, Xiaoting,et al."Stability of Pd3Pb Nanocubes during Electrocatalytic Ethanol Oxidation".CHEMISTRY OF MATERIALS 32.5(2020):2044-2052.