Oxidative decomposition mechanisms of lithium carbonate on carbon substrates in lithium battery chemistries

Oxidative decomposition mechanisms of lithium carbonate on carbon substrates in lithium battery chemistries

Registration ID: IJNRD_183918

Published ID: IJNRD2210182

DOI: http://doi.one/10.1729/Journal.32144

Dr. Sudhir Kumar Mishra

Overpotential, Gas chromatography, Singlet oxygen, DMS, 13C-substrate, Superoxide, Electrooxidative process, Elecrolyte degradation.

Lithium carbonate plays a critical role in both lithium-carbon dioxide and lithium-air batteries as the main discharge product and a product of side reactions, respectively. Understanding the decomposition of lithium carbonate during electrochemical oxidation (during battery charging) is key for improving both chemistries, but the decomposition mechanisms and the role of the carbon substrate remain under debate. Here, we use an in-situ differential electrochemical mass spectrometry-gas chromatography coupling system to quantify the gas evolution during the electrochemical oxidation of lithium carbonate on carbon substrates. Our results show that lithium carbonate decomposes to carbon dioxide and singlet oxygen mainly via an electrochemical process instead of via a chemical process in an electrolyte of lithium bis(trifluoromethanesulfonyl)imide in tetraglyme. Singlet oxygen attacks the carbon substrate and electrolyte to form both carbon dioxide and carbon monoxide—approximately 20% of the net gas evolved originates from these side reactions. Additionally, we show that cobalt(II,III) oxide, a typical oxygen evolution catalyst, stabilizes the precursor of singlet oxygen, thus inhibiting the formation of singlet oxygen and consequent side reactions.

Published Paper   E-Certificate

"Oxidative decomposition mechanisms of lithium carbonate on carbon substrates in lithium battery chemistries", IJNRD - INTERNATIONAL JOURNAL OF NOVEL RESEARCH AND DEVELOPMENT (www.IJNRD.org), ISSN:2456-4184, Vol.7, Issue 10, page no.437-461, October-2022, Available :https://ijnrd.org/papers/IJNRD2210182.pdf

Volume 7 Issue 10, October-2022

Pages : 437-461

Paper Reg. ID: IJNRD_183918

Published Paper Id: IJNRD2210182

Downloads: 000121169

Research Area: Engineering

Country: -, -, -

Published Paper PDF: https://ijnrd.org/papers/IJNRD2210182.pdf

Published Paper URL: https://ijnrd.org/viewpaperforall?paper=IJNRD2210182

DOI: http://doi.one/10.1729/Journal.32144

Journal Name: INTERNATIONAL JOURNAL OF NOVEL RESEARCH AND DEVELOPMENT(IJNRD)

ISSN: 2456-4184 | IMPACT FACTOR: 8.76 Calculated By Google Scholar | ESTD YEAR: 2016

An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 8.76 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator

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This work is licensed under a Creative Commons Attribution 4.0 International License and The Open Definition

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