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Fluorinated saccharide-derived hard carbon as a cathode material of lithium primary batteries: effect of the polymerization degree of the starting saccharide

Fluorinated hard carbon materials have been considered to be a good candidate of cathode materials of Li/CF(x) batteries. However, the effect of the precursor structure of the hard carbon on the structure and electrochemical performance of fluorinated carbon cathode materials has yet to be fully stu...

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Autores principales: Chen, Lei, Li, Yanyan, Liu, Chao, Guo, Feifei, Wu, Xiaozhong, Zhou, Pengfei, Fang, Zhiwen, Zhou, Jin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10184521/
https://www.ncbi.nlm.nih.gov/pubmed/37197186
http://dx.doi.org/10.1039/d3ra01695a
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author Chen, Lei
Li, Yanyan
Liu, Chao
Guo, Feifei
Wu, Xiaozhong
Zhou, Pengfei
Fang, Zhiwen
Zhou, Jin
author_facet Chen, Lei
Li, Yanyan
Liu, Chao
Guo, Feifei
Wu, Xiaozhong
Zhou, Pengfei
Fang, Zhiwen
Zhou, Jin
author_sort Chen, Lei
collection PubMed
description Fluorinated hard carbon materials have been considered to be a good candidate of cathode materials of Li/CF(x) batteries. However, the effect of the precursor structure of the hard carbon on the structure and electrochemical performance of fluorinated carbon cathode materials has yet to be fully studied. In this paper, a series of fluorinated hard carbon (FHC) materials are prepared by gas phase fluorination using saccharides with different degrees of polymerization as a carbon source, and their structure and electrochemical properties are studied. The experimental results show that the specific surface area, pore structure, and defect degree of hard carbon (HC) are enhanced as the polymerization degree (i.e. molecular weight) of the starting saccharide increases. At the same time, the F/C ratio increases after fluorination at the same temperature, and the contents of electrochemically inactive –CF(2) and –CF(3) groups also become higher. At the fluorination temperature of 500 °C, the obtained fluorinated glucose pyrolytic carbon shows good electrochemical properties, with a specific capacity of 876 mA h g(−1), an energy density of 1872 W kg(−1), and a power density of 3740 W kg(−1). This study provides valuable insights and references for selecting suitable hard carbon precursors to develop high-performance fluorinated carbon cathode materials.
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spelling pubmed-101845212023-05-16 Fluorinated saccharide-derived hard carbon as a cathode material of lithium primary batteries: effect of the polymerization degree of the starting saccharide Chen, Lei Li, Yanyan Liu, Chao Guo, Feifei Wu, Xiaozhong Zhou, Pengfei Fang, Zhiwen Zhou, Jin RSC Adv Chemistry Fluorinated hard carbon materials have been considered to be a good candidate of cathode materials of Li/CF(x) batteries. However, the effect of the precursor structure of the hard carbon on the structure and electrochemical performance of fluorinated carbon cathode materials has yet to be fully studied. In this paper, a series of fluorinated hard carbon (FHC) materials are prepared by gas phase fluorination using saccharides with different degrees of polymerization as a carbon source, and their structure and electrochemical properties are studied. The experimental results show that the specific surface area, pore structure, and defect degree of hard carbon (HC) are enhanced as the polymerization degree (i.e. molecular weight) of the starting saccharide increases. At the same time, the F/C ratio increases after fluorination at the same temperature, and the contents of electrochemically inactive –CF(2) and –CF(3) groups also become higher. At the fluorination temperature of 500 °C, the obtained fluorinated glucose pyrolytic carbon shows good electrochemical properties, with a specific capacity of 876 mA h g(−1), an energy density of 1872 W kg(−1), and a power density of 3740 W kg(−1). This study provides valuable insights and references for selecting suitable hard carbon precursors to develop high-performance fluorinated carbon cathode materials. The Royal Society of Chemistry 2023-05-15 /pmc/articles/PMC10184521/ /pubmed/37197186 http://dx.doi.org/10.1039/d3ra01695a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Chen, Lei
Li, Yanyan
Liu, Chao
Guo, Feifei
Wu, Xiaozhong
Zhou, Pengfei
Fang, Zhiwen
Zhou, Jin
Fluorinated saccharide-derived hard carbon as a cathode material of lithium primary batteries: effect of the polymerization degree of the starting saccharide
title Fluorinated saccharide-derived hard carbon as a cathode material of lithium primary batteries: effect of the polymerization degree of the starting saccharide
title_full Fluorinated saccharide-derived hard carbon as a cathode material of lithium primary batteries: effect of the polymerization degree of the starting saccharide
title_fullStr Fluorinated saccharide-derived hard carbon as a cathode material of lithium primary batteries: effect of the polymerization degree of the starting saccharide
title_full_unstemmed Fluorinated saccharide-derived hard carbon as a cathode material of lithium primary batteries: effect of the polymerization degree of the starting saccharide
title_short Fluorinated saccharide-derived hard carbon as a cathode material of lithium primary batteries: effect of the polymerization degree of the starting saccharide
title_sort fluorinated saccharide-derived hard carbon as a cathode material of lithium primary batteries: effect of the polymerization degree of the starting saccharide
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10184521/
https://www.ncbi.nlm.nih.gov/pubmed/37197186
http://dx.doi.org/10.1039/d3ra01695a
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