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Combination of solid polymer electrolytes and lithiophilic zinc for improved plating/stripping efficiency in anode-free lithium metal solid-state batteries
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström. Politecn Milan, Dipartimento Chim Mat & Ingn Chim Giulio Natta, Via Luigi Mancinelli 7, I-20131 Milan, Italy..
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström.ORCID iD: 0000-0003-1785-8364
Politecn Milan, Dipartimento Chim Mat & Ingn Chim Giulio Natta, Via Luigi Mancinelli 7, I-20131 Milan, Italy..
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2023 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 1873-3859, Vol. 464, article id 142874Article in journal (Refereed) Published
Abstract [en]

Anode-free lithium metal batteries and solid-state batteries represent some of the most promising alternatives to the current Li-ion technology. The possibility to reach high energy density, due to the exploitation of Li-metal plating/stripping and the elimination of excess anode material, motivate the interest at both academic and in-dustrial levels. Despite these favourable properties, the use of Li-metal has always been extremely challenging and inefficient. This becomes particularly relevant in anode-free systems where no excess of lithium is introduced in the cell. The efficiency and quality of the deposition process is therefore of utmost importance. To optimize the Li-metal plating process, a combination of solid polymer electrolytes and a lithiophilic metal is applied herein, using in situ deposition of a zinc interlayer from a PEO-based SPE to modify the Cu current collector. Im-provements in specific capacity, coulombic efficiency and cyclability with the addition of zinc as lithiophilic metal is verified in full anode-free solid-state Li-batteries, while plating/stripping in half-cell configuration provides additional insights into the relevant mechanisms. The exploitation of the in situ deposited lithiophilic layer reveals an innovative and practical optimization strategy for the future of anode-free solid-state batteries.

Place, publisher, year, edition, pages
Elsevier BV , 2023. Vol. 464, article id 142874
Keywords [en]
Anode-free batteries, Solid polymer electrolytes, Li-metal batteries, Lithiophilic metals, Zinc triflate
National Category
Materials Chemistry Physical Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-510007DOI: 10.1016/j.electacta.2023.142874ISI: 001047684800001OAI: oai:DiVA.org:uu-510007DiVA, id: diva2:1791880
Funder
Swedish Foundation for Strategic Research, 139501338EU, European Research Council, 771777StandUpAvailable from: 2023-08-28 Created: 2023-08-28 Last updated: 2023-08-28Bibliographically approved

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Andersson, EdvinBrandell, DanielMindemark, Jonas

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