Detailed thermodynamic analysis of polymer electrolyte membrane fuel cell efficiency

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F13%3A43919838" target="_blank" >RIV/49777513:23640/13:43919838 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.ijhydene.2013.03.149" target="_blank" >http://dx.doi.org/10.1016/j.ijhydene.2013.03.149</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijhydene.2013.03.149" target="_blank" >10.1016/j.ijhydene.2013.03.149</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Detailed thermodynamic analysis of polymer electrolyte membrane fuel cell efficiency

Popis výsledku v původním jazyce

It is common knowledge that efficiency of fuel cells is highest when no electric current is produced while when the fuel cell is really working, the efficiency is reduced by dissipation. In this paper the relation between efficiency and dissipation inside the fuel cell is formulated within the framework of classical irreversible thermodynamics of mixtures. It is shown that not only dissipation influences the efficiency but that there are also some other terms which become important if there are steep temperature gradients inside the fuel cell. Indeed, we show that the new terms are negligible in polymer-electrolyte membrane fuel cells while they become important in solid oxide fuel cells. In summary, this paper presents a formulation of non-equilibriumthermodynamics of fuel cells and provides analysis of efficiency in terms of processes inside the fuel cells, revealing some new terms affecting the efficiency.

Název v anglickém jazyce

Detailed thermodynamic analysis of polymer electrolyte membrane fuel cell efficiency

Popis výsledku anglicky

It is common knowledge that efficiency of fuel cells is highest when no electric current is produced while when the fuel cell is really working, the efficiency is reduced by dissipation. In this paper the relation between efficiency and dissipation inside the fuel cell is formulated within the framework of classical irreversible thermodynamics of mixtures. It is shown that not only dissipation influences the efficiency but that there are also some other terms which become important if there are steep temperature gradients inside the fuel cell. Indeed, we show that the new terms are negligible in polymer-electrolyte membrane fuel cells while they become important in solid oxide fuel cells. In summary, this paper presents a formulation of non-equilibriumthermodynamics of fuel cells and provides analysis of efficiency in terms of processes inside the fuel cells, revealing some new terms affecting the efficiency.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BJ - Termodynamika

OECD FORD obor

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Projekt

<a href="/cs/project/ED2.1.00%2F03.0088" target="_blank" >ED2.1.00/03.0088: Centrum nových technologií a materiálů (CENTEM)</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název periodika

International Journal of Hydrogen Energy

ISSN

0360-3199

e-ISSN

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Svazek periodika

38

Číslo periodika v rámci svazku

17

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

7102-7113

Kód UT WoS článku

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EID výsledku v databázi Scopus

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