Stack pressure and mechanical robustness are two important parameters needed to tackle the interfacial instability of solid-state batteries. Here, the mechanical behavior of Na4(CB11H12)2(B12H12), as solid electrolyte at the interface with Na anode, is reported. The solid electrolyte is tested as function of stack pressure and different current densities, revealing a critical current density of 0.6 mA cm−2 at room temperature and an optimal stack pressure of 1.5 MPa. These findings are achieved, thanks to the adoption of a multilayer approach, demonstrating the powerfulness of hydroborates to compensate chemical and electrochemical instability, simply employing different complex hydride polyanions that change locally the electrochemical properties while preserving structural and chemical coherence.

Mechanical Behavior and Dendrite Resistance of closo-Hydroborate Solid Electrolyte / Brighi, M.; Murgia, F.; Cerny, R.. - In: ADVANCED MATERIALS INTERFACES. - ISSN 2196-7350. - 9:3(2022), p. 2101254. [10.1002/admi.202101254]

Mechanical Behavior and Dendrite Resistance of closo-Hydroborate Solid Electrolyte

Murgia F.;
2022-01-01

Abstract

Stack pressure and mechanical robustness are two important parameters needed to tackle the interfacial instability of solid-state batteries. Here, the mechanical behavior of Na4(CB11H12)2(B12H12), as solid electrolyte at the interface with Na anode, is reported. The solid electrolyte is tested as function of stack pressure and different current densities, revealing a critical current density of 0.6 mA cm−2 at room temperature and an optimal stack pressure of 1.5 MPa. These findings are achieved, thanks to the adoption of a multilayer approach, demonstrating the powerfulness of hydroborates to compensate chemical and electrochemical instability, simply employing different complex hydride polyanions that change locally the electrochemical properties while preserving structural and chemical coherence.
2022
Mechanical Behavior and Dendrite Resistance of closo-Hydroborate Solid Electrolyte / Brighi, M.; Murgia, F.; Cerny, R.. - In: ADVANCED MATERIALS INTERFACES. - ISSN 2196-7350. - 9:3(2022), p. 2101254. [10.1002/admi.202101254]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11388/303970
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