Search: id:"swepub:oai:DiVA.org:uu-320250" >
Mechanical Stabiliz...
Mechanical Stabilization of Solid Polymer Electrolytes through Gamma Irradiation
-
- Mindemark, Jonas (author)
- Uppsala universitet,Strukturkemi
-
- Sobkowiak, Adam (author)
- Uppsala universitet,Strukturkemi
-
- Oltean, Gabriel (author)
- Uppsala universitet,Strukturkemi
-
show more...
-
- Brandell, Daniel, 1975- (author)
- Uppsala universitet,Strukturkemi
-
- Gustafsson, Torbjörn, 1949- (author)
- Uppsala universitet,Strukturkemi
-
show less...
-
(creator_code:org_t)
- PERGAMON-ELSEVIER SCIENCE LTD, 2017
- 2017
- English.
-
In: Electrochimica Acta. - : PERGAMON-ELSEVIER SCIENCE LTD. - 0013-4686 .- 1873-3859. ; 230, s. 189-195
- Related links:
-
https://urn.kb.se/re...
-
show more...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- Attaining sufficient mechanical stability is a challenge for high-performance solid polymer electrolytes, particularly at elevated temperatures. We have here characterized the viscoelastic properties of the nonpolyether host material poly(epsilon-caprolactone-co-trimethylene carbonate) with and without incorporated LiTFSI salt. While this electrolyte material performs well at room temperature, at 80 degrees C the material is prone to viscous flow. Through gamma-irradiation at a dose of 25 kGy, the material stabilizes such that it behaves as a rubbery solid even at low rates of deformation while retaining a high ionic conductivity necessary for use in solid-state Li batteries. The performance of the irradiated electrolyte was investigated in Li polymer half-cells (Li vs. LiFePO4) at both 80 degrees C and room temperature. In Contrast with the notably stable battery performance at low temperatures using the non-irradiated material, during cycling of the irradiated electrolytes detrimental instabilities were noted at both 80 degrees C and room temperature. The possible effects of both radiation damage to the electrolyte and impaired interfacial contacts due to the crosslinking indicate that a different procedure may be necessary in order to stabilize these electrolytes for use in battery cells capable of stable long-term operation.
Subject headings
- NATURVETENSKAP -- Kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
Keyword
- polymer electrolytes
- crosslinking
- lithium batteries
- mechanical properties
- gamma irradiation
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database