Methodological data – Electrochemical measurements (Nat Comm)

Name: Methodological data – Electrochemical measurements (Nat Comm)
Published: 2018-01-01T00:00:00Z
License: https://ora.ox.ac.uk/terms_of_use

Bruce, P

Documentation:: Data was created in Peter Bruce's labs 2017-18

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APA Style

Bruce, P. (2018). Methodological data – Electrochemical measurements (Nat Comm). University of Oxford.

MLA Style

Bruce, P. Methodological Data – Electrochemical Measurements (Nat Comm). University of Oxford, 2018.

Chicago Style

Bruce, P. 2018. “Methodological Data – Electrochemical Measurements (Nat Comm).” University of Oxford.
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Files:: Methodological data for Nat Comm paper.docx

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Authors/Creators

+ Bruce, P More by this author/creator

Institution:: University of Oxford
Division:: MPLS
Department:: Materials
Role:: Contributor, Principal Investigator (PI), Data manager, Creator

+ Engineering and Physical Sciences Research Council More from this funder

Funder identifier:: https://ror.org/0439y7842
Grant:: EP/L019469/1

Publisher:: University of Oxford
Publication date:: 2018
DOI:: 10.5287/bodleian:nbeGE1Aao

Language:: English
Pubs id:: 1480236
UUID:: uuid:e75bd63a-5d3c-4d66-997a-349394bbcda0
Local pid:: pubs:1480236
Deposit date:: 2018-02-05

Related item:: Kinetics of lithium peroxide oxidation by redox mediators and consequences for the lithium–oxygen cell
Description:: Lithium–oxygen cells, in which lithium peroxide forms in solution rather than on the electrode surface, can sustain relatively high cycling rates but require redox mediators to charge. The mediators are oxidised at the electrode surface and then oxidise lithium peroxide stored in the cathode. The kinetics of lithium peroxide oxidation has received almost no attention and yet is crucial for the operation of the lithium–oxygen cell. It is essential that the molecules oxidise lithium peroxide sufficiently rapidly to sustain fast charging. Here, we investigate the kinetics of lithium peroxide oxidation by several different classes of redox mediators. We show that the reaction is not a simple outer-sphere electron transfer and that the steric structure of the mediator molecule plays an important role. The fastest mediator studied could sustain a charging current of up to 1.9 A cm–2, based on a model for a porous electrode described here.

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