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Aluminum Metal–Organic Batteries with Integrated 3D Thin Film Anodes
Chalmers University of Technology, Sweden; .ORCID-id: 0000-0002-7928-2076
2020 (Engelska)Ingår i: Advanced Functional Materials, ISSN 1616-301X, E-ISSN 1616-3028, Vol. 30, nr 51Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Abstract Aluminum 3D thin film anodes fully integrated with a separator are fabricated by sputtering and enable rechargeable aluminum metal batteries with high power performance. The 3D thin film anodes have an approximately four to eight times larger active surface area than a metal foil, which significantly both reduces the electrochemical overpotential, and improves materials utilization. In full cells with organic cathodes, that is, aluminum metal?organic batteries, the 3D thin film anodes provide 165 mAh g?1 at 0.5 C rate, with a capacity retention of 81% at 20 C, and 86% after 500 cycles. Post-mortem analysis reveals structural degradation to limit the long-term stability at high rates. As the multivalent charge carrier active here is AlCl2+, the realistic maximal specific energy, and power densities at cell level are ≈100 Wh kg?1 and ≈3100 W kg?1, respectively, which is significantly higher than the state-of-the-art for Al batteries.

Ort, förlag, år, upplaga, sidor
John Wiley & Sons, Ltd , 2020. Vol. 30, nr 51
Nyckelord [en]
3D anodes, aluminum batteries, organic cathodes, sputtering, thin films
Nationell ämneskategori
Naturvetenskap
Identifikatorer
URN: urn:nbn:se:ri:diva-61141DOI: 10.1002/adfm.202004573OAI: oai:DiVA.org:ri-61141DiVA, id: diva2:1710420
Konferens
2022/11/13
Tillgänglig från: 2022-11-13 Skapad: 2022-11-13 Senast uppdaterad: 2022-11-23Bibliografiskt granskad

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Förlagets fulltexthttps://doi.org/10.1002/adfm.202004573

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Lindahl, Niklas

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Advanced Functional Materials
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