Vaš brskalnik ne omogoča JavaScript!
JavaScript je nujen za pravilno delovanje teh spletnih strani. Omogočite JavaScript ali pa uporabite sodobnejši brskalnik.
Nacionalni portal odprte znanosti
Odprta znanost
DiKUL
slv
|
eng
Iskanje
Brskanje
Novo v RUL
Kaj je RUL
V številkah
Pomoč
Prijava
Elucidating mechanistic background of the origin and rates of peroxide formation in low temperature proton exchange fuel cells
ID
Kregar, Ambrož
(
Avtor
),
ID
Katrašnik, Tomaž
(
Avtor
)
PDF - Predstavitvena datoteka,
prenos
(789,04 KB)
MD5: EDAE2C7E72744C7F1AD2F0F2CFFC5775
URL - Izvorni URL, za dostop obiščite
https://pub.iapchem.org/ojs/index.php/JESE/article/view/1659
Galerija slik
Izvleček
Degradation of electrode-membrane assembly of the low-temperature hydrogen fuel cells represents one of the main obstacles in wider adoption of these clean and efficient electrochemical sources of electrical energy. Chemical degradation of proton exchange membrane is initiated by hydrogen peroxide formation, which forms in the fuel cell as a byproduct to water in oxygen reduction reaction and decomposes to reactive radical species, damaging to the membrane chemical structure. Depending on the operating conditions of the fuel cell, the source of hydrogen peroxide can be either cathode, anode, or, as we argue in the paper, also the Pt particles in the membrane, which originate from the cathode catalyst dissolution, diffusion into the membrane and redeposition of Pt ions inside the membrane. In the paper we propose a mathematical model of intertwined physical processes in membrane and catalyst layer, aimed at unifying the description of hydrogen peroxide formation throughout entire membrane-electrode assembly at any fuel cell operating conditions. The model results, compared to experimental data, indicate that Pt particles inside the membrane can indeed be an important source of hydrogen peroxide in aged fuel cells. For a fresh fuel cell, numerical simulation using proposed model show that hydrogen peroxide can be formed at either cathode or anode, depending on the fuel cell operating condition, but with anode production being more prominent in standard fuel cell operating conditions.
Jezik:
Angleški jezik
Ključne besede:
fuel cells
,
membrane
,
degradation
,
hydrogen peroxide
,
modelling
Vrsta gradiva:
Članek v reviji
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
FS - Fakulteta za strojništvo
Status publikacije:
Objavljeno
Različica publikacije:
Objavljena publikacija
Leto izida:
2023
Št. strani:
Str. 753-770
Številčenje:
Vol. 13, no. 5
PID:
20.500.12556/RUL-148318-0c85b30c-41a5-8781-381c-9c0c05cb9ed6
UDK:
621.352.6
ISSN pri članku:
1847-9286
DOI:
10.5599/jese.1659
COBISS.SI-ID:
161131267
Datum objave v RUL:
11.08.2023
Število ogledov:
369
Število prenosov:
34
Metapodatki:
Citiraj gradivo
Navadno besedilo
BibTeX
EndNote XML
EndNote/Refer
RIS
ABNT
ACM Ref
AMA
APA
Chicago 17th Author-Date
Harvard
IEEE
ISO 690
MLA
Vancouver
:
Kopiraj citat
Objavi na:
Gradivo je del revije
Naslov:
Journal of electrochemical science and engineering
Skrajšan naslov:
J. electrochem. sci. eng.
Založnik:
International Association of Physical Chemists
ISSN:
1847-9286
COBISS.SI-ID:
16608022
Licence
Licenca:
CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:
http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:
To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Sekundarni jezik
Jezik:
Slovenski jezik
Ključne besede:
gorivne celice
,
membrane
,
degradacija
,
vodikov peroksid
,
modeliranje
Projekti
Financer:
Drugi - Drug financer ali več financerjev
Program financ.:
MORELife project
Številka projekta:
101007170
Financer:
Drugi - Drug financer ali več financerjev
Program financ.:
Fuel Cells and Hydrogen 2
Številka projekta:
101007170
Financer:
EC - European Commission
Program financ.:
Horizon 2020
Financer:
EC - European Commission
Program financ.:
Hydrogen Europe Research
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
NC-0025
Naslov:
Večskalno modeliranje degradacijskih pojavov membransko elektrodnih sklopov gorivnih celic s protonsko izmenjalno membrano izdelanih iz naprednih materialov
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
P2-0401
Naslov:
Energetsko strojništvo
Podobna dela
Podobna dela v RUL:
Podobna dela v drugih slovenskih zbirkah:
Nazaj