Communication-Platinum and Tin Oxide Dispersed in a Fluffy TiO2Nanolayer for Electrocatalytic Reduction of Oxygen

被引：4

作者：

Jasim, Ahmed M. ^{[1
]}

Al-Salihi, Sara ^{[1
]}

Xing, Yangchuan ^{[1
]}

机构：

[1] Univ Missouri, Dept Biomed Biol & Chem Engn, Columbia, MO 65211 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2020年 / 167卷 / 11期

关键词：

Fluffy titania layer; Catalyst support; Tin oxide; Oxygen vacancy; Oxygen reduction reaction; ATOMIC LAYER DEPOSITION; CATALYST SUPPORT; ELECTROCHEMICAL CHARACTERIZATION; ELECTROOXIDATION ACTIVITY; STABILITY; NANOPARTICLES; NANOCOMPOSITES; TRANSFORMATION; DURABILITY; NIOBIUM;

D O I：

10.1149/1945-7111/aba96c

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Pt catalysts perform well in the oxygen reduction reaction (ORR), but they suffer weak bonding with carbon supports, leading to catalyst degradation. We introduce a fluffy titanium dioxide (TiO2) nanolayer with a very high specific surface area as support, made possible with a new condensed layer deposition technique. When Pt and SnO(2)were incorporated in it as co-catalyst, a remarkable improvement in ORR onset potential was achieved at 930 mV vs RHE in sulfuric acids. The mass activity was 2.66 times that of Pt/C at 900 mV. The fluffy layer stabilized SnO(2)and together, they enabled a pronounced ligand effect.

引用

页数：5

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