- Title
- Physical characteristics of capacitive carbons derived from the electrolytic reduction of alkali metal carbonate molten salts
- Creator
- Hughes, Matthew A.; Bennett, Robert D.; Allen, Jessica A.; Donne, Scott W.
- Relation
- RSC Advances Vol. 9, Issue 63, p. 36771-36787
- Publisher Link
- http://dx.doi.org/10.1039/c9ra05170h
- Publisher
- Royal Society of Chemistry
- Resource Type
- journal article
- Date
- 2019
- Description
- Carbons have been synthesized through the reduction of molten carbonate systems under varied conditions. The mechanism and kinetics of carbon electrodeposition has been investigated. Carbon morphologies include amorphous, graphite-like, and spherical aggregate phases. Increased graphitic character is observed in carbons electrodeposited at more cathodic potentials, particularly at higher temperatures. Bonding has been investigated and oxygen functionalised sp2 and sp3 structures have been identified. The level of functionalization decreases in carbons with reduced amorphous and increased graphitic character. Thermal decomposition of electrodepositied carbons has been investigated and zero order kinetics have been identified. A relationship has been identified between elevated oxygen functionalization and increased pseudo-capacitance, with carbons deposited at 0.15 A cm−2 showing capacitances of 400 F g−1 in 0.5 M H2SO4 at sweep rates of 10 mV s−1.
- Subject
- carbons; molten carbonate systems; carbon morphologies; alkali metal carbonate molten salts
- Identifier
- http://hdl.handle.net/1959.13/1410989
- Identifier
- uon:36263
- Identifier
- ISSN:2046-2069
- Rights
- This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
- Language
- eng
- Full Text
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