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A Mechanical Robust...
A Mechanical Robust yet highly Conductive Diblock Copolymer-based Solid Polymer Electrolyte for Room Temperature Structural Battery Applications
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- Bergfelt, Andreas (författare)
- Uppsala universitet,Polymerkemi
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- Hernández, Guiomar (författare)
- Uppsala universitet,Strukturkemi
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- Mogensen, Ronnie (författare)
- Uppsala universitet,Strukturkemi
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- Lacey, Matthew J. (författare)
- Uppsala universitet,Strukturkemi
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- Mindemark, Jonas (författare)
- Uppsala universitet,Strukturkemi
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- Brandell, Daniel, 1975- (författare)
- Uppsala universitet,Strukturkemi
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- Bowden, Tim Melander, 1972- (författare)
- Uppsala universitet,Polymerkemi
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(creator_code:org_t)
- 2020-01-03
- 2020
- Engelska.
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Ingår i: ACS Applied Polymer Materials. - : American Chemical Society (ACS). - 2637-6105. ; 2:2, s. 939-948
- Relaterad länk:
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https://uu.diva-port... (primary) (Raw object)
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http://uu.diva-porta...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- In this paper we present a solid polymer electrolyte (SPE) that uniquely combines ionic conductivity and mechanical robustness. This is achieved with a diblock copolymer poly(benzyl methacrylate)-poly(ε-caprolactone-r-trimethylene carbonate). The SPE with 16.7 wt% lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) showed the highest ionic conductivity (9.1×10−6 S cm−1 at 30 °C) and apparent transference number (T+) of 0.64 ± 0.04. Due to the employment of the benzyl methacrylate hard-block, this SPE is mechanically robust with a storage modulus (E') of 0.2 GPa below 40 °C, similar to polystyrene, thus making it a suitable material also for load-bearing constructions. The cell Li|SPE|LiFePO4 is able to cycle reliably at 30 °C for over 300 cycles. The promising mechanical properties, desired for compatibility with Li-metal, together with the fact that BCT is a highly reliable electrolyte material makes this SPE an excellent candidate for next-generation all-solid-state batteries.
Ämnesord
- NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
Nyckelord
- block copolymer
- solid polymer electrolyte
- lithium-ion battery
- structural battery
- solid-state battery
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