10.1021/acs.nanolett.9b01843.s001
Xiaolei Yuan
Xiaolei
Yuan
Yong Zhang
Yong
Zhang
Muhan Cao
Muhan
Cao
Tong Zhou
Tong
Zhou
Xiaojing Jiang
Xiaojing
Jiang
Jinxing Chen
Jinxing
Chen
Fenglei Lyu
Fenglei
Lyu
Yong Xu
Yong
Xu
Jun Luo
Jun
Luo
Qiao Zhang
Qiao
Zhang
Yadong Yin
Yadong
Yin
Bi(OH)<sub>3</sub>/PdBi Composite Nanochains as Highly
Active and Durable Electrocatalysts for Ethanol Oxidation
American Chemical Society
2019
durability
Pd
nanochain
ethanol fuel cells
Bi
CO
ethanol oxidation reaction
EOR catalysts
mg
2019-06-12 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Bi_OH_sub_3_sub_PdBi_Composite_Nanochains_as_Highly_Active_and_Durable_Electrocatalysts_for_Ethanol_Oxidation/8283755
Developing
high-performance electrocatalysts for the ethanol oxidation
reaction (EOR) is critical to the commercialization of direct ethanol
fuel cells. However, current EOR catalysts suffer from high cost,
low activity, and poor durability. Here we report the preparation
of PdBi-Bi(OH)<sub>3</sub> composite nanochains with outstanding EOR
activity and durability. The incorporation of Bi can tune the electronic
structure and downshift the d-band center of Pd while the surface
decoration of Bi(OH)<sub>3</sub> can facilitate the oxidative removal
of CO and other carbonaceous intermediates. As a result, the nanochains
manifest an exceptional mass activity (5.30 A mg<sub>Pd</sub><sup>–1</sup>, 4.6-fold higher than that of commercial Pd/C) and
outstanding durability (with a retained current density of ∼1.00
A mg<sub>Pd</sub><sup>–1</sup> after operating for 20 000
s). More importantly, the nanochain catalyst can be reactivated, and
negligible activity loss has been observed after operating for 200 000
s with periodic reactivation, making it one of the best EOR catalysts.