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Novel cell designs and methods for characterizing lithium protective membranes for lithium metal batteries

Novel cell designs and methods for characterizing lithium protective membranes for lithium metal batteries
Novel cell designs and methods for characterizing lithium protective membranes for lithium metal batteries
Battery systems employing a lithium metal negative electrode are attractive due to their high theoretical specific energy. However, it is necessary to protect the lithium electrode from crossover species such as polysulfides in Li-S systems, redox mediators in Li-O2 cells, or dissolved cathode species or electrolyte oxidation products in high voltage Li-ion batteries. One approach to tackling these issues is the use of a lithium-ion selective conducting membrane to protect the lithium metal electrode. Such a membrane allows passage of lithium ions, but is impermeable to other species. As well as ability to block crossover species, key requirements of any material used in this way are high Li+ conductivity and high Li+ transport number (together with low interfacial impedance, wide electrochemical stability window, good chemical, thermal and mechanical stability, low cost and ease of processing/device integration). This paper discusses a novel cell design and method developed to characterize lithium-protective membranes in lithium metal batteries, specifically their ability to block crossover species.
membranes, Lithium batteries, selectivity, permeability
1876-6102
62-68
Meddings, Nina
3018b390-3284-4da0-a9c6-4be738803717
Owen, John R.
067986ea-f3f3-4a83-bc87-7387cc5ac85d
Garcia-Araez, Nuria
9358a0f9-309c-495e-b6bf-da985ad81c37
Meddings, Nina
3018b390-3284-4da0-a9c6-4be738803717
Owen, John R.
067986ea-f3f3-4a83-bc87-7387cc5ac85d
Garcia-Araez, Nuria
9358a0f9-309c-495e-b6bf-da985ad81c37

Meddings, Nina, Owen, John R. and Garcia-Araez, Nuria (2018) Novel cell designs and methods for characterizing lithium protective membranes for lithium metal batteries. Energy Procedia, 151, 62-68. (doi:10.1016/j.egypro.2018.09.028).

Record type: Article

Abstract

Battery systems employing a lithium metal negative electrode are attractive due to their high theoretical specific energy. However, it is necessary to protect the lithium electrode from crossover species such as polysulfides in Li-S systems, redox mediators in Li-O2 cells, or dissolved cathode species or electrolyte oxidation products in high voltage Li-ion batteries. One approach to tackling these issues is the use of a lithium-ion selective conducting membrane to protect the lithium metal electrode. Such a membrane allows passage of lithium ions, but is impermeable to other species. As well as ability to block crossover species, key requirements of any material used in this way are high Li+ conductivity and high Li+ transport number (together with low interfacial impedance, wide electrochemical stability window, good chemical, thermal and mechanical stability, low cost and ease of processing/device integration). This paper discusses a novel cell design and method developed to characterize lithium-protective membranes in lithium metal batteries, specifically their ability to block crossover species.

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Accepted/In Press date: 6 September 2018
e-pub ahead of print date: 1 November 2018
Keywords: membranes, Lithium batteries, selectivity, permeability

Identifiers

Local EPrints ID: 426027
URI: http://eprints.soton.ac.uk/id/eprint/426027
ISSN: 1876-6102
PURE UUID: 362d4454-2374-438d-87d4-cf8feb8af747
ORCID for Nina Meddings: ORCID iD orcid.org/0000-0001-7242-6076
ORCID for John R. Owen: ORCID iD orcid.org/0000-0002-4938-3693
ORCID for Nuria Garcia-Araez: ORCID iD orcid.org/0000-0001-9095-2379

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Date deposited: 09 Nov 2018 17:30
Last modified: 08 Jan 2022 03:19

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Contributors

Author: Nina Meddings ORCID iD
Author: John R. Owen ORCID iD

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