Multiphase PtPdSb nanoparticles for direct electrochemical energy conversion using hydrogen-rich dimethyl ether

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F25%3A43975713" target="_blank" >RIV/49777513:23640/25:43975713 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.jpowsour.2025.236301" target="_blank" >https://doi.org/10.1016/j.jpowsour.2025.236301</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jpowsour.2025.236301" target="_blank" >10.1016/j.jpowsour.2025.236301</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Multiphase PtPdSb nanoparticles for direct electrochemical energy conversion using hydrogen-rich dimethyl ether

Popis výsledku v původním jazyce

Dimethyl ether (DME) is a promising next-generation renewable fuel for polymer electrolyte membrane fuel cells (PEMFC) because of its high energy density, ease of handling and supply, nontoxicity, reduced crossover, and ability to be obtained from a wide range of renewable sources. However, its commercialization has not yet been realized, owing to the low activity of state-of-the-art catalysts. We have synthesized a novel Genkenite ternary metal catalyst, PtxPdySbz/C, with varying metal compositions and tested its activity towards DME oxidation in both three-electrode flooded cell and in single fuel cell configurations. Some important insights into the DME reaction mechanism were gleaned using ex-situ Fourier transform infrared spectroscopy and were supported by density functional theory (DFT) computations. A direct DME fuel cell constructed with 1.2 and 3.1 mgPGM cm􀀀 2 loading of Pt5PdSb4/C and Pt/C as anode and cathode catalysts, respectively, operating at 65 ◦C temperature and no back pressure delivered a peak power density of 180 mW cm􀀀 2 and one of the highest reported current density of 360 mA cm􀀀 2 at 0.5 V. Moreover, the catalyst provided the highest PGM (Pt+Pd) mass normalized power density of 150 mW mg􀀀PG1M.

Název v anglickém jazyce

Multiphase PtPdSb nanoparticles for direct electrochemical energy conversion using hydrogen-rich dimethyl ether

Popis výsledku anglicky

Dimethyl ether (DME) is a promising next-generation renewable fuel for polymer electrolyte membrane fuel cells (PEMFC) because of its high energy density, ease of handling and supply, nontoxicity, reduced crossover, and ability to be obtained from a wide range of renewable sources. However, its commercialization has not yet been realized, owing to the low activity of state-of-the-art catalysts. We have synthesized a novel Genkenite ternary metal catalyst, PtxPdySbz/C, with varying metal compositions and tested its activity towards DME oxidation in both three-electrode flooded cell and in single fuel cell configurations. Some important insights into the DME reaction mechanism were gleaned using ex-situ Fourier transform infrared spectroscopy and were supported by density functional theory (DFT) computations. A direct DME fuel cell constructed with 1.2 and 3.1 mgPGM cm􀀀 2 loading of Pt5PdSb4/C and Pt/C as anode and cathode catalysts, respectively, operating at 65 ◦C temperature and no back pressure delivered a peak power density of 180 mW cm􀀀 2 and one of the highest reported current density of 360 mA cm􀀀 2 at 0.5 V. Moreover, the catalyst provided the highest PGM (Pt+Pd) mass normalized power density of 150 mW mg􀀀PG1M.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/EH22_008%2F0004572" target="_blank" >EH22_008/0004572: Kvantové materiály pro aplikace v udržitelných technologiích</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

JOURNAL OF POWER SOURCES

ISSN

0378-7753

e-ISSN

1873-2755

Svazek periodika

632

Číslo periodika v rámci svazku

MAR 15 2025

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

13

Strana od-do

nestránkováno

Kód UT WoS článku

001421673100001

EID výsledku v databázi Scopus

2-s2.0-85216312893