Bulk Metallic Glass Nanowire Architecture for Electrochemical Applications

被引：191

作者：

Carmo, Marcelo ^{[1
]}

Sekol, Ryan C. ^{[1
]}

Ding, Shiyan ^{[2
]}

Kumar, Golden ^{[2
]}

Schroers, Jan ^{[2
]}

Taylor, Andre D. ^{[1
]}

机构：

[1] Yale Univ, Chem & Environm Engn Dept, New Haven, CT 06511 USA

[2] Yale Univ, Dept Mech Engn & Mat Sci, New Haven, CT 06511 USA

来源：

ACS NANO | 2011年 / 5卷 / 04期

基金：

美国国家科学基金会;

关键词：

bulk metallic glasses; nanowires; electrocatalysts; fuel cells; PEMFC; DAFC; MICRO-FUEL-CELL; METHANOL OXIDATION; ELECTRICAL-CONDUCTIVITY; CARBON NANOTUBES; ELECTROCATALYSTS; PERFORMANCE; CATALYSTS; NANOCOMPOSITES;

D O I：

10.1021/nn200033c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Electrochemical devices have the potential to pose powerful solutions in addressing rising energy demands and counteracting environmental problems. However, currently, these devices suffer from meager performance due to poor efficiency and durability of the catalysts. These suboptimal characteristics have hampered widespread commercialization. Here we report on Pt(57.5)Cu(14.7)Ni(5.3)P(22.5) bulk metallic glass (pt-BMG) nanowires, whose novel architecture and outstanding durability circumvent the performance problems of electrochemical devices. We fabricate Pt-BMG nanowires using a facile and scalable nanoimprinting approach to create dealloyed high surface area nanowire catalysts with high conductivity and activity for methanol and ethanol oxidation. After 1000 cycles, these nanowires maintain 96% of their performance-2.4 times as much as conventional Pt/C catalysts. Their properties make them Ideal candidates for widespread commercial use such as for energy conversion/storage and sensors.

引用

页码：2979 / 2983

页数：5

共 29 条

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