Combination of solid polymer electrolytes and lithiophilic zinc for improved plating/stripping efficiency in anode-free lithium metal solid-state batteries

Bertoli, LucaUppsala universitet,Institutionen för kemi - Ångström,Politecn Milan, Dipartimento Chim Mat & Ingn Chim Giulio Natta, Via Luigi Mancinelli 7, I-20131 Milan, Italy. (författare)

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.

Bloch, SophiaUppsala universitet,Institutionen för kemi - Ångström (författare)
Andersson, EdvinUppsala universitet,Institutionen för kemi - Ångström(Swepub:uu)edvan426 (författare)
Magagnin, LucaPolitecn Milan, Dipartimento Chim Mat & Ingn Chim Giulio Natta, Via Luigi Mancinelli 7, I-20131 Milan, Italy. (författare)
Brandell, Daniel,1975-Uppsala universitet,Institutionen för kemi - Ångström(Swepub:uu)dbr10334 (författare)
Mindemark, JonasUppsala universitet,Strukturkemi(Swepub:uu)jonmi189 (författare)
Uppsala universitetInstitutionen för kemi - Ångström (creator_code:org_t)

Av författaren/redakt...: Bertoli, Luca; Bloch, Sophia; Andersson, Edvin; Magagnin, Luca; Brandell, Daniel ...; Mindemark, Jonas

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