Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Nanostructured Cathodes: A step on the path towards a fully interdigitated 3-D microbattery
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Kemiska sektionen, Institutionen för kemi - Ångström, Oorganisk kemi.
2011 (engelsk)Independent thesis Advanced level (professional degree), 20 poäng / 30 hpOppgave
Abstract [en]

The Li-ion field of battery research has in the latest decades made substantial progress and is seen to be the most promising battery technology due to the high volume and specific energy densities of Li-ion batteries. However, in order to achieve a battery capable of competing with the energy density of a combustion engine, further research into new electrode materials is required. As the cathode materials are the limiting factor in terms of capacity, this is the main area in need of further research. The introduction of 3-D electrodes brought new hope as the ion transportpath is decreased as well as an increased electrode area leading to an increased capacity. This thesis work has focused on the development of aluminium 3-D current collectors in order to improve the electrode area and shorten the Li-ion transportpath. By using a template assisted electrodeposition technique, nanorods of controlled magnitude and order can be synthesized. Furthermore, the electrodeposition brings excellent possibilities of upscaling for future industrial manufacturing of the batterycells. A polycarbonate template material which showed interesting properties,was used in the electrodeposition of aluminium nanorods. As the template pores were nonhomogeneously ordered a number of nonordered nanorods were expected to arise during the deposition. However, a surplus of nanorods in reference to the template pores was acquired. This behavior was investigated and a hypothesis was formed as to the mechanism of the nanorod formation. In order to achieve acomplete cathode electrode, a coating of an ion host material on the nanorods isneeded. Due to its high capacity and voltage, vanadium oxide was selected. Based on previous work with electrodeposition of V2O5 on platinum, a series of experiments were performed to mimic the deposition on an aluminium sample. Unfortunately, the deposition was unsuccessful as the experimental conditions resulted in aluminium corrosion which in turn made deposition of the cathode material impossible. The pH dependence of the deposition was evaluated and the conclusion was drawn, that electrodeposition of vanadium oxide on aluminium is not possible using this approach.

sted, utgiver, år, opplag, sider
2011.
Serie
UPTEC K, ISSN 1650-8297 ; 11004
Emneord [en]
Nanostructure, Lithium ion battery, microbattery, cathode
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-169405OAI: oai:DiVA.org:uu-169405DiVA, id: diva2:506455
Fag / kurs
Material
Utdanningsprogram
Master Programme in Chemical Engineering
Uppsök
Technology
Veileder
Examiner
Tilgjengelig fra: 2012-03-01 Laget: 2012-02-28 Sist oppdatert: 2012-03-01bibliografisk kontrollert

Open Access i DiVA

Exjobbsrapport - David Rehnlund(1017 kB)968 nedlastinger
Filinformasjon
Fil FULLTEXT01.pdfFilstørrelse 1017 kBChecksum SHA-512
e465e42c4b0b4c18d65e40d38ef6d0ce37cd389f9374f572a30ed42f85ca6e702f5ae7fbe8d6b93c800ebc07fd781e1d2b8bab6063ad18b733ed863cc09d4877
Type fulltextMimetype application/pdf

Søk i DiVA

Av forfatter/redaktør
Rehnlund, David
Av organisasjonen

Søk utenfor DiVA

GoogleGoogle Scholar
Totalt: 968 nedlastinger
Antall nedlastinger er summen av alle nedlastinger av alle fulltekster. Det kan for eksempel være tidligere versjoner som er ikke lenger tilgjengelige

urn-nbn

Altmetric

urn-nbn
Totalt: 1438 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf