Innovations in nanomaterials for proton exchange membrane fuel cells

↓ Direkt till sidans innehåll
↓ Direkt till sidans sekundära innehåll (sidomenyn)

Sökning: WFRF:(Edman Robin) > Innovations in nano...

Sandström, Robin,1988-Umeå universitet,Institutionen för fysik (författare)

Innovations in nanomaterials for proton exchange membrane fuel cells

BokEngelska2019

Förlag, utgivningsår, omfång ...

Umeå :Umeå University,2019
88 s.
electronicrdacarrier

Nummerbeteckningar

LIBRIS-ID:oai:DiVA.org:umu-158501
ISBN:9789178550449
https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-158501URI

Kompletterande språkuppgifter

Språk:engelska
Sammanfattning på:engelska

Ingår i deldatabas

SwePubSwePub

Klassifikation

Ämneskategori:vet swepub-contenttype
Ämneskategori:dok swepub-publicationtype

Varianttitlar

Utveckling av nanomaterial för polymerelektrolytbränsleceller

Anmärkningar

Hydrogen technologies are rapidly receiving increased attention as it offers a renewable energy alternative to the current petroleum-based fuel infrastructure, considering that continued large-scale use of such fossil fuels will lead to disastrous impacts on our environment. The proton exchange membrane fuel cell should play a significant role in a hydrogen economy since it enables convenient and direct conversion of hydrogen into electricity, thus allowing the use of hydrogen in applications particularly suited for the transportation industry. To fully realize this, multiple engineering challenges as well as development of advanced nanomaterials must however be addressed.In this thesis, we present discoveries of new innovative nanomaterials for proton exchange membrane fuel cells by targeting the entire membrane electrode assembly. Conceptually, we first propose new fabrication techniques of gas diffusion electrodes based on helical carbon nanofibers, where an enhanced three-phase boundary was noted in particular for hierarchical structures. The cathode catalyst, responsible for facilitating the sluggish oxygen reduction reaction, was further improved by the synthesis of platinum-based nanoparticles with an incorporated secondary metal (iron, yttrium and cobalt). Here, both solvothermal and high-temperature microwave syntheses were employed. Catalytic activities were improved compared to pure platinum and could be attributed to favorably shifted oxygen adsorption energies as a result of successful incorporation of the non-precious metal. As best exemplified by platinum-iron nanoparticles, the oxygen reduction reaction was highly sensitive to both metal composition and the type of crystal structure. Finally, a proton exchange membrane based on fluorine and sulfonic acid functionalized graphene oxide was prepared and tested in hydrogen fuel cell conditions, showing improvements such as lowered hydrogen permeation and better structural stability. Consequently, we have demonstrated that there is room for improvement of multiple components, suggesting that more powerful fuel cells can likely be anticipated in the future.

Ämnesord och genrebeteckningar

TEKNIK OCH TEKNOLOGIER Naturresursteknik Energisystem hsv//swe
ENGINEERING AND TECHNOLOGY Environmental Engineering Energy Systems hsv//eng
TEKNIK OCH TEKNOLOGIER Nanoteknik hsv//swe
ENGINEERING AND TECHNOLOGY Nano-technology hsv//eng
TEKNIK OCH TEKNOLOGIER Materialteknik Annan materialteknik hsv//swe
ENGINEERING AND TECHNOLOGY Materials Engineering Other Materials Engineering hsv//eng
TEKNIK OCH TEKNOLOGIER Kemiteknik Annan kemiteknik hsv//swe
ENGINEERING AND TECHNOLOGY Chemical Engineering Other Chemical Engineering hsv//eng
NATURVETENSKAP Fysik Den kondenserade materiens fysik hsv//swe
NATURAL SCIENCES Physical Sciences Condensed Matter Physics hsv//eng
Fuel Cells
Membrane Electrode Assembly
Oxygen Reduction Reaction
Platinum alloy catalyst
Nanoparticles
Gas Diffusion Electrode
Proton Exchange Membrane
Materials Science
materialvetenskap
fasta tillståndets fysik
Solid State Physics

Biuppslag (personer, institutioner, konferenser, titlar ...)

Wågberg, Thomas,Professor,1971-Umeå universitet,Institutionen för fysik(Swepub:umu)thwa0002 (preses)
Edman, Ludvig,Professor,1967-Umeå universitet,Institutionen för fysik(Swepub:umu)lued0001 (preses)
Nitze, Florian,Post Doc,1981-Department of Chemistry and Chemical Engineering, Chalmers University of Technology(Swepub:umu)flni0002 (preses)
Sun, Licheng,ProfessorDepartment of Chemistry, KTH Royal Institute of Technology, Stockholm, Sweden. (opponent)
Umeå universitetInstitutionen för fysik (creator_code:org_t)

Internetlänk

Hitta via bibliotek

Innovations in nanomaterials for proton exchange membrane fuel cells (Sök publikationen i LIBRIS)

Till lärosätets databas

Hitta mer i SwePub

Av författaren/redakt...: Sandström, Robin ...; Wågberg, Thomas, ...; Edman, Ludvig, P ...; Nitze, Florian, ...; Sun, Licheng, Pr ...

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Naturresurstekni ...; och Energisystem

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Nanoteknik

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Materialteknik; och Annan materialte ...

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Kemiteknik; och Annan kemiteknik

NATURVETENSKAP: NATURVETENSKAP; och Fysik; och Den kondenserade ...

Av lärosätet: Umeå universitet

Sök utanför SwePub

Sök vidare i:: Google; Google Book Search; Google Scholar

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

LIBRIS.kb.se