On the benefits of structured composite electrodes in solid oxide cells

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F23%3A43928052" target="_blank" >RIV/60461373:22310/23:43928052 - isvavai.cz</a>

Result on the web

<a href="https://link.springer.com/article/10.1007/s00706-023-03139-3" target="_blank" >https://link.springer.com/article/10.1007/s00706-023-03139-3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00706-023-03139-3" target="_blank" >10.1007/s00706-023-03139-3</a>

Result language

angličtina

Original language name

On the benefits of structured composite electrodes in solid oxide cells

Original language description

Functional composites of electronic and ionic conductors are the backbone of oxygen and fuel electrodes in solid oxide cells. A typical oxygen electrode is fabricated from a lanthanum strontium manganite and yttria-stabilized zirconia (LSM-YSZ) composite, while the fuel electrode is based on a Ni-YSZ cermet. While the composite materials exhibit enhanced kinetic capabilities, the electron-conductive phases, i.e., LSM and Ni, exhibit high electrical conductivity. The goal of this study was to develop an electrode layout with enhanced performance by tailoring the benefits of both, the composites and the single-phase electron conductors, within individual electrodes. The electrodes were fabricated in a two-layer layout with different thicknesses by screen-printing: composite material layer, electron-conductive material. The results suggested that the presence of YSZ is essential in the entire electrode body of a fuel electrode for enhanced performance as it increases the triple phase boundary length, as well as mechanical stability by forming a scaffold for the Ni network. Hence, for the optimal performance a thick layer of Ni-YSZ composite is required. On the contrary, the optimal oxygen electrode requires only very thin layer of the composite, otherwise the presence of YSZ is retarding the electrode’s performance. Graphical abstract: [Figure not available: see fulltext.]. © 2023, The Author(s).

Czech name

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Czech description

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Type

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

CEP classification

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OECD FORD branch

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

Project

<a href="/en/project/TK04030143" target="_blank" >TK04030143: Advanced reversible system for hydrogen production on base of the high temperature solid oxide cell</a><br>

Continuities

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

Publication year

2023

Confidentiality

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

Name of the periodical

MONATSHEFTE FUR CHEMIE

ISSN

0026-9247

e-ISSN

1434-4475

Volume of the periodical

Neuveden

Issue of the periodical within the volume

Listopad

Country of publishing house

AT - AUSTRIA

Number of pages

8

Pages from-to

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UT code for WoS article

001107844600001

EID of the result in the Scopus database

2-s2.0-85177802946