An investigation of commercial carbon air cathode structure in ionic liquid based sodium oxygen batteries

The An Ha; Cristina Pozo-Gonzalo; Kate Nairn; Douglas R. MacFarlane; Maria Forsyth; Patrick C. Howlett

doi:10.1038/s41598-020-63473-y

An investigation of commercial carbon air cathode structure in ionic liquid based sodium oxygen batteries

The An Ha, Cristina Pozo-Gonzalo, Kate Nairn, Douglas R. MacFarlane, Maria Forsyth, Patrick C. Howlett

School of Chemistry

Research output: Contribution to journal › Article › Research › peer-review

18 Citations (Scopus)

Abstract

In order to bridge the gap between theoretical and practical energy density in sodium oxygen batteries challenges need to be overcome. In this work, four commercial air cathodes were selected, and the impacts of their morphologies, structure and chemistry on their performance with a pyrrolidinium-based ionic liquid electrolyte are evaluated. The highest discharge capacity was found for a cathode with a pore size ca. 6 nm; this was over 100 times greater than that delivered by a cathode with a pore size less than 2 nm. The air cathode with the highest specific surface area and the presence of a microporous layer (BC39) exhibited the highest specific capacity (0.53 mAh cm⁻²).

Original language	English
Article number	7123
Number of pages	10
Journal	Scientific Reports
Volume	10
Issue number	1
DOIs	https://doi.org/10.1038/s41598-020-63473-y
Publication status	Published - 28 Apr 2020

Keywords

energy
materials for energy and catalysis

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10.1038/s41598-020-63473-y

309627623-oaFinal published version, 2.04 MB

Cite this

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AU - Forsyth, Maria

AU - Howlett, Patrick C.

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AB - In order to bridge the gap between theoretical and practical energy density in sodium oxygen batteries challenges need to be overcome. In this work, four commercial air cathodes were selected, and the impacts of their morphologies, structure and chemistry on their performance with a pyrrolidinium-based ionic liquid electrolyte are evaluated. The highest discharge capacity was found for a cathode with a pore size ca. 6 nm; this was over 100 times greater than that delivered by a cathode with a pore size less than 2 nm. The air cathode with the highest specific surface area and the presence of a microporous layer (BC39) exhibited the highest specific capacity (0.53 mAh cm−2).

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An investigation of commercial carbon air cathode structure in ionic liquid based sodium oxygen batteries

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ARC Centre of Excellence for Electromaterials Science

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An investigation of commercial carbon air cathode structure in ionic liquid based sodium oxygen batteries

Abstract

Keywords

Access to Document

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ARC Centre of Excellence for Electromaterials Science

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