Ternary PtRuPd/C catalyst for high-performance, low-temperature direct dimethyl ether fuel cells

Dumont, Joseph Henry; Martinez, Ulises; Chung, Hoon T.; Zelenay, Piotr

doi:10.1002/celc.201600336

Title: Ternary PtRuPd/C catalyst for high-performance, low-temperature direct dimethyl ether fuel cells

Journal Article · Fri Aug 19 00:00:00 EDT 2016 · ChemElectroChem

DOI:https://doi.org/10.1002/celc.201600336· OSTI ID:1343708

Dumont, Joseph Henry ^[1]; Martinez, Ulises ^[1]; Chung, Hoon T. ^[1]; Zelenay, Piotr ^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Here, dimethyl ether (DME) is a promising alternative fuel option for direct-feed low-temperature fuel cells. Until recently, DME had not received the same attention as alcohol fuels, such as methanol or ethanol, despite its notable advantages. These advantages include a high theoretical open-cell voltage (1.18 V at 25 °C) that is similar to that of methanol (1.21 V), much lower toxicity than methanol, and no need for the carbon–carbon bond scission that is needed in ethanol oxidation. DME is biodegradable, has a higher energy content than methanol (8.2 vs. 6.1 kWh kg^–1), and, like methanol, can be synthesized from recycled carbon dioxide. Although the performance of direct DME fuel cells (DDMEFCs) has progressed over the past few years, DDMEFCs have not been viewed as fully viable. In this work, we report much improved performance from the ternary Pt₅₅Ru₃₅Pd₁₀/C anode catalyst, allowing DDMEFCs to compete directly with direct methanol fuel cells (DMFCs). We also report results involving binary Pt alloys as reference catalysts and an in situ infrared electrochemical study to better understand the mechanism of DME electro-oxidation on ternary PtRuPd/C catalysts.

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Research Organization:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE). Fuel Cell Technologies Program (EE-3F)

Grant/Contract Number:: AC52-06NA25396

OSTI ID:: 1343708

Report Number(s):: LA-UR-16-24333

Journal Information:: ChemElectroChem, Vol. 3, Issue 10; ISSN 2196-0216

Publisher:: ChemPubSoc EuropeCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 22 works

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References (23)

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30 DIRECT ENERGY CONVERSION
dimethyl ether
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oxidation

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