Pt-modified molybdenum carbide for the hydrogen evolution reaction: From model surfaces to powder electrocatalysts

被引：50

作者：

Kelly, Thomas G. ^{[1
]}

Lee, Kevin X. ^{[2
]}

Chen, Jingguang G. ^{[2
]}

机构：

[1] Univ Delaware, Dept Chem & Biomol Engn, Newark, DE 19716 USA

[2] Columbia Univ, Dept Chem Engn, New York, NY 10027 USA

来源：

JOURNAL OF POWER SOURCES | 2014年 / 271卷

关键词：

Hydrogen evolution; Electrocatalysis; Carbides; Energy conversion; TRANSITION-METAL CARBIDES; ELECTROCHEMICAL STABILITY; MO2C/CARBON CATALYSTS; WC; DECOMPOSITION; VOLTAMMETRY; TUNGSTEN; MO2C;

D O I：

10.1016/j.jpowsour.2014.07.179

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This work explores the opportunity to substantially reduce the cost of hydrogen evolution reaction (HER) electrocatalysts by supporting one monolayer (ML) of platinum (Pt) on low-cost molybdenum carbide (MO2C) substrate. These efforts were primarily directed towards scaling a thin-film catalyst to high surface area particles. Electrochemical experiments investigated single-phase MO2C thin films modified by different coverages of Pt for the HER. The ML Pt MO2C thin film showed Pt-like HER activity while displaying excellent stability under HER conditions. The promising results on thin films were then extended to more practical powder catalysts. Samples of various Pt loadings on Mo2C powders were synthesized using the co-impregnation method and were evaluated for HER activity. The ability to successfully link electrochemical activity on thin films and powder catalysts was thus demonstrated. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：76 / 81

页数：6

共 20 条

[1] Hydrogen production in the decomposition and steam reforming of methanol on Mo2C/carbon catalysts [J].

Barthos, Robert ;

Solymosi, Frigyes .

JOURNAL OF CATALYSIS, 2007, 249 (02) :289-299

[2] The decomposition of ethanol over Mo2C/carbon catalysts [J].

Barthos, Robert ;

Szechenyi, Aleksandar ;

Koos, Akos ;

Solymosi, Frigyes .

APPLIED CATALYSIS A-GENERAL, 2007, 327 (01) :95-105

[3] Comparison of electrosorption at activated polycrystalline and Pt(531) kinked platinum electrodes. Surface voltammetry and charge displacement on potentiostatic CO adsorption [J].

Clavilier, J ;

Orts, JM ;

Gomez, R ;

Feliu, JM ;

Aldaz, A .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1996, 404 (02) :281-289

[4]

Cumpson PJ, 1997, SURF INTERFACE ANAL, V25, P430, DOI 10.1002/(SICI)1096-9918(199706)25:6<430::AID-SIA254>3.0.CO

[5]

2-7

[6] A New Class of Electrocatalysts for Hydrogen Production from Water Electrolysis: Metal Monolayers Supported on Low-Cost Transition Metal Carbides [J].

Esposito, Daniel V. ;

Hunt, Sean T. ;

Kimmel, Yannick C. ;

Chen, Jingguang G. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2012, 134 (06) :3025-3033

[7] Low-Cost Hydrogen-Evolution Catalysts Based on Monolayer Platinum on Tungsten Monocarbide Substrates [J].

Esposito, Daniel V. ;

Hunt, Sean T. ;

Stottlemyer, Alan L. ;

Dobson, Kevin D. ;

McCandless, Brian E. ;

Birkmire, Robert W. ;

Chen, Jingguang G. .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2010, 49 (51) :9859-9862

[8] Computational high-throughput screening of electrocatalytic materials for hydrogen evolution [J].

Greeley, Jeff ;

Jaramillo, Thomas F. ;

Bonde, Jacob ;

Chorkendorff, I. B. ;

Norskov, Jens K. .

NATURE MATERIALS, 2006, 5 (11) :909-913

[9] Surface chemistry of transition metal carbides [J].

Hwu, HH ;

Chen, JGG .

CHEMICAL REVIEWS, 2005, 105 (01) :185-212

[10] Metal overlayer on metal carbide substrate: unique bimetallic properties for catalysis and electrocatalysis [J].

Kelly, Thomas G. ;

Chen, Jingguang G. .

CHEMICAL SOCIETY REVIEWS, 2012, 41 (24) :8021-8034

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