Modification of gas diffusion layers properties to improve water management

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F18%3A43951211" target="_blank" >RIV/49777513:23640/18:43951211 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007/s40243-017-0104-6" target="_blank" >https://link.springer.com/article/10.1007/s40243-017-0104-6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s40243-017-0104-6" target="_blank" >10.1007/s40243-017-0104-6</a>

Result language

angličtina

Original language name

Modification of gas diffusion layers properties to improve water management

Original language description

In this paper we report an approach to improve water management of commercial GDLs by introducing hydrophobicity patterns. Specifically, line and grid patterns have been created in the MPL side by laser radiation. For an in-depth investigation of these modified GDLs the current density distribution was monitored during fuel cell operation. Additionally, the physical properties of these materials were investigated by a number of ex situ methods such as Fourier transform infrared microscopy, electrochemical impedance spectroscopy and water vapor sorption. Furthermore, a comparison of the physical properties of the patterned GDLs with chemically modified GDLs (treated in H2SO4 and H2O2) is provided. Our results show a clearly improved homogeneity of current density distribution of the patterned GDLs compared to untreated GDLs. This observation is likely due to a reduced local hydrophobicity which facilitates water diffusion along the flow field of the fuel cell. However, performance of the fuel cell was not affected by the MPL irradiation.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20704 - Energy and fuels

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2018

Confidentiality

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

Name of the periodical

Materials for Renewable and Sustainable Energy

ISSN

2194-1459

e-ISSN

—

Volume of the periodical

6

Issue of the periodical within the volume

4

Country of publishing house

CH - SWITZERLAND

Number of pages

9

Pages from-to

—

UT code for WoS article

000414079800005

EID of the result in the Scopus database

—