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A Silatrane:Molecul...
A Silatrane:Molecule-Based Crystal Composite Solid-State Electrolyte for All-Solid-State Lithium Batteries
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- Navarro Suárez, Adriana, 1983 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Johansson, Patrik, 1969 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2019-09-02
- 2019
- Engelska.
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Ingår i: Batteries and Supercaps. - : Wiley. - 2566-6223. ; 2:11, s. 956-962
- Relaterad länk:
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https://research.cha...
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visa fler...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- All-solid-state batteries (ASSBs) are promoted as a promising option towards higher energies and power densities as well as drastically reduced safety risks as compared to conventional lithium-ion batteries (LIBs). Herein, a composite solid-state electrolyte (SSE) based on two crystalline materials with two distinctly different ion conduction mechanisms, percolation and ion hopping, is reported. By combining a silatrane (SA; here ethoxysilatrane) with a molecule-based crystal (MBC; here LiTFSI-TMEDA) the resulting SA : MBC 2 : 1 crystalline composite shows an appreciable ion conductivity of 10(-5) S cm(-1) at room temperature, and low apparent activation energy, 836 K, for the ion transport. Studies of the overall and local structure show that in the composite the Li+ and TFSI ions are dissociated, and this seems to be mediated by the SA part of the matrix. As a proof-of-concept, an ASSB based on this SSE can operate at 50 degrees C providing up to 105 mAh g(-1) during 20 cycles.
Ämnesord
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Keramteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Ceramics (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Nyckelord
- cooperative effect
- percolation
- ion hopping
- solid-state electrolytes
- conducting materials
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