On the influence of porous transport layers parameters on the performances of polymer electrolyte membrane water electrolysis cells

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F21%3A43922475" target="_blank" >RIV/60461373:22310/21:43922475 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.electacta.2021.139436" target="_blank" >https://doi.org/10.1016/j.electacta.2021.139436</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.electacta.2021.139436" target="_blank" >10.1016/j.electacta.2021.139436</a>

Jazyk výsledku

angličtina

Název v původním jazyce

On the influence of porous transport layers parameters on the performances of polymer electrolyte membrane water electrolysis cells

Popis výsledku v původním jazyce

Polymer electrolyte membrane (PEM) water electrolysis represents, in combination with renewable energy, progressive technology of hydrogen production. However, material-related issues still represent an obstacle in improvement of energy efficiency of the process. Porous transport layer (PTL) made usually of Ti, acting as a current collector and distributor of the water-gas flow, is a crucial part of the PEM water electrolysers. In this work, we investigate the impact of sintered Ti PTL structures on both the cathode and anode on the internal resistance of a single cell by means of voltage loss analysis. Less conventional and rarely applied porous transport electrode design favourable for high current density operation is used for the study. While activation and Ohmic resistance-related voltage losses were comparable for PTLs with different bulk porosities and pore opening diameters, mass transfer losses significantly increased when a less porous PTL was used on the anode. While the majority of mass transfer-related losses comes from the anode, it was proven that use of less porous cathode PTL mitigates these losses, pointing out a suitable combination of PTLs for improved performance. © 2021 Elsevier Ltd

Název v anglickém jazyce

On the influence of porous transport layers parameters on the performances of polymer electrolyte membrane water electrolysis cells

Popis výsledku anglicky

Polymer electrolyte membrane (PEM) water electrolysis represents, in combination with renewable energy, progressive technology of hydrogen production. However, material-related issues still represent an obstacle in improvement of energy efficiency of the process. Porous transport layer (PTL) made usually of Ti, acting as a current collector and distributor of the water-gas flow, is a crucial part of the PEM water electrolysers. In this work, we investigate the impact of sintered Ti PTL structures on both the cathode and anode on the internal resistance of a single cell by means of voltage loss analysis. Less conventional and rarely applied porous transport electrode design favourable for high current density operation is used for the study. While activation and Ohmic resistance-related voltage losses were comparable for PTLs with different bulk porosities and pore opening diameters, mass transfer losses significantly increased when a less porous PTL was used on the anode. While the majority of mass transfer-related losses comes from the anode, it was proven that use of less porous cathode PTL mitigates these losses, pointing out a suitable combination of PTLs for improved performance. © 2021 Elsevier Ltd

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Projekt

<a href="/cs/project/GC20-06422J" target="_blank" >GC20-06422J: Pokročilá nanostrukturovaná sestava membrány a elektrod se zdokonaleným přenosem hmoty a náboje pro elektrolýzu vody s protonově výměnnou membránou</a><br>

Návaznosti

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

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Electrochimica Acta

ISSN

0013-4686

e-ISSN

—

Svazek periodika

399

Číslo periodika v rámci svazku

December 2021

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

—

Kód UT WoS článku

000718154300006

EID výsledku v databázi Scopus

2-s2.0-85117937073