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High‐performant all...
High‐performant all‐organic aqueous sodium‐ion batteries enabled by PTCDA electrodes and a hybrid Na/Mg electrolyte
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- Karlsmo, Martin, 1995 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Bouchal, Roza, 1990 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Johansson, Patrik, 1969 (författare)
- Alistore - European Research Institute,Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 2021-10-12
- 2021
- Engelska.
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Ingår i: Angewandte Chemie - International Edition. - : Wiley. - 1433-7851 .- 1521-3773. ; 60:46, s. 24709-24715
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Abstract
Ämnesord
Stäng
- Aqueous sodium-ion batteries (ASIBs) are aspiring candidates for low environmental impact energy storage, especially when using organic electrodes. In this respect, perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA) is a promising anode active material, but it suffers from extensive dissolution in conventional aqueous electrolytes. As a remedy, we here present a novel aqueous electrolyte, which inhibits the PTCDA dissolution and enables their use as all-organic ASIB anodes with high capacity retention and Coulombic efficiencies. Furthermore, the electrolyte is based on two, hence “hybrid”, inexpensive and non-fluorinated Na/Mg-salts, it displays favourable physico-chemical properties and an electrochemical stability window >3 V without resorting to the extreme salt concentrations of water-in-salt electrolytes. Altogether, this paves the way for ASIBs with both relatively high energy densities, inexpensive total cell chemistries, long-term sustainability, and improved safety.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- anode
- all-organic
- PTCDA
- aqueous electrolyte
- sodium-ion battery
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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