Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
π-Conjugation Enables Ultra-High Rate Capabilities and Cycling Stabilities in Phenothiazine Copolymers as Cathode-Active Battery Materials
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry. Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.ORCID iD: 0000-0003-0377-3669
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory.ORCID iD: 0000-0001-5192-0016
Show others and affiliations
2019 (English)In: Advanced Functional Materials, ISSN 1616-301X, E-ISSN 1616-3028, Vol. 29, no 45, article id 1906436Article in journal (Refereed) Published
Abstract [en]

In recent years, organic battery cathode materials have emerged as an attractive alternative to metal oxide–based cathodes. Organic redox polymers that can be reversibly oxidized are particularly promising. A drawback, however, often is their limited cycling stability and rate performance in a high voltage range of more than 3.4 V versus Li/Li+. Herein, a conjugated copolymer design with phenothiazine as a redox‐active group and a bithiophene co‐monomer is presented, enabling ultra‐high rate capability and cycling stability. After 30 000 cycles at a 100C rate, >97% of the initial capacity is retained. The composite electrodes feature defined discharge potentials at 3.6 V versus Li/Li+ due to the presence of separated phenothiazine redox centers. The semiconducting nature of the polymer allows for fast charge transport in the composite electrode at a high mass loading of 60 wt%. A comparison with three structurally related polymers demonstrates that changing the size, amount, or nature of the side groups leads to a reduced cell performance. This conjugated copolymer design can be used in the development of advanced redox polymers for batteries.

Place, publisher, year, edition, pages
2019. Vol. 29, no 45, article id 1906436
Keywords [en]
conjugated polymers, microwave chemistry, organic batteries, phenothiazine, redox chemistry
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-395983DOI: 10.1002/adfm.201906436ISI: 000484612400001OAI: oai:DiVA.org:uu-395983DiVA, id: diva2:1366036
Funder
German Research Foundation (DFG), ES 361/2-1Swedish Energy Agency, 45420-1StandUpCarl Tryggers foundation Swedish National Infrastructure for Computing (SNIC)Available from: 2019-10-28 Created: 2019-10-28 Last updated: 2019-12-09Bibliographically approved

Open Access in DiVA

fulltext(2425 kB)19 downloads
File information
File name FULLTEXT01.pdfFile size 2425 kBChecksum SHA-512
dfedc1f1c52df745d59a53c06ee3a536dd12039d6e53d569670cc804816f6bd39c666c8b57745fceb7e5f7f52a8255c2ae7790498666c8a067042dca45c5ed92
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Search in DiVA

By author/editor
Marchiori, Cleber F. N.Araujo, Carlos Moyses
By organisation
Structural ChemistryMaterials Theory
In the same journal
Advanced Functional Materials
Materials Chemistry

Search outside of DiVA

GoogleGoogle Scholar
Total: 19 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 112 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf