Vapor-feed low temperature direct methanol fuel cell with Pt and PtRu electrodes: Chemistry insight

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10405810" target="_blank" >RIV/00216208:11320/19:10405810 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=iDCYaM_JvW" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=iDCYaM_JvW</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.renene.2019.01.109" target="_blank" >10.1016/j.renene.2019.01.109</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Vapor-feed low temperature direct methanol fuel cell with Pt and PtRu electrodes: Chemistry insight

Popis výsledku v původním jazyce

The performance of a vapor-fed low-temperature direct methanol fuel cell (DMFC) with Nafion proton exchange membrane has been analyzed and compared to identical fuel cell assembly supplied with liquid methanol diluted in water. The cell was subjected to a wide range of methanol concentrations and power loads. The potentiostatic measurements were correlated with the composition of gases released at the anode determined by on-line mass spectroscopy. Both Pt and PtRu catalysts supported on carbon were used at the DMFC anode while cathode comprised pristine Pt on C in all cases. It is demonstrated experimentally that although the vapor-fed system is generally more complex and require an additional source of heat or utilization of the waste reaction heat, it shows its potential to be more efficient and tunable than conventional liquid-fed FCs as well as more resistant to poisoning, even in the absence of ruthenium in the anode catalyst. Energy efficiency of 30% and power density exceeding 70 mW cm(-2) were achieved with Pt/C electrodes without any noticeable long-term degradation. (C) 2019 Elsevier Ltd. All rights reserved.

Název v anglickém jazyce

Vapor-feed low temperature direct methanol fuel cell with Pt and PtRu electrodes: Chemistry insight

Popis výsledku anglicky

The performance of a vapor-fed low-temperature direct methanol fuel cell (DMFC) with Nafion proton exchange membrane has been analyzed and compared to identical fuel cell assembly supplied with liquid methanol diluted in water. The cell was subjected to a wide range of methanol concentrations and power loads. The potentiostatic measurements were correlated with the composition of gases released at the anode determined by on-line mass spectroscopy. Both Pt and PtRu catalysts supported on carbon were used at the DMFC anode while cathode comprised pristine Pt on C in all cases. It is demonstrated experimentally that although the vapor-fed system is generally more complex and require an additional source of heat or utilization of the waste reaction heat, it shows its potential to be more efficient and tunable than conventional liquid-fed FCs as well as more resistant to poisoning, even in the absence of ruthenium in the anode catalyst. Energy efficiency of 30% and power density exceeding 70 mW cm(-2) were achieved with Pt/C electrodes without any noticeable long-term degradation. (C) 2019 Elsevier Ltd. All rights reserved.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Renewable Energy

ISSN

0960-1481

e-ISSN

—

Svazek periodika

138

Číslo periodika v rámci svazku

Jan

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

409-415

Kód UT WoS článku

000465051900037

EID výsledku v databázi Scopus

2-s2.0-85060906973