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Title: Low-Temperature Fluorination of Soft-Templated Mesoporous Carbons for a High-Power Lithium/Carbon Fluoride Battery

Abstract

Soft-templated mesoporous carbons and activated mesoporous carbons were fluorinated using elemental fluorine between room temperature and 235 C. The mesoporous carbons were prepared via self-assembly synthesis of phloroglucinol formaldehyde as a carbon precursor in the presence of triblock ethylene oxide propylene oxide ethylene oxide copolymer BASF Pluronic F127 as the template. The F/C ratios ranged from 0.15 to 0.75 according to gravimetric, energy dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy analysis. Materials have mesopore diameters up to 11 nm and specific surface areas as high as 850 m2 g 1 after fluorination as calculated from nitrogen adsorption isotherms at 196 C. Furthermore, the materials exhibit higher discharge potentials and energy and power densities as well as faster reaction kinetics under high current densities than commercial carbon fluorides with similar fluorine contents when tested as cathodes for Li/CFx batteries.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2]
  1. ORNL
  2. University of Tennessee, Knoxville (UTK)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE Office of Science (SC)
OSTI Identifier:
1029577
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
Chemistry of Materials
Additional Journal Information:
Journal Volume: 23; Journal Issue: 20; Journal ID: ISSN 0897-4756
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; 25 ENERGY STORAGE; ADSORPTION ISOTHERMS; CARBON; CARBON FLUORIDES; CATHODES; COPOLYMERS; ETHYLENE; FLUORIDES; FLUORINATION; FLUORINE; FORMALDEHYDE; NITROGEN; OXIDES; PLURONICS; PRECURSOR; PROPYLENE; REACTION KINETICS; SPECIFIC SURFACE AREA; SYNTHESIS; X-RAY PHOTOELECTRON SPECTROSCOPY; X-RAY SPECTROSCOPY

Citation Formats

Fulvio, Pasquale F, Dai, Sheng, Guo, Bingkun, Mahurin, Shannon Mark, Mayes, Richard T, Sun, Xiao-Guang, Veith, Gabriel M, Brown, Suree, and Adcock, Jamie. Low-Temperature Fluorination of Soft-Templated Mesoporous Carbons for a High-Power Lithium/Carbon Fluoride Battery. United States: N. p., 2011. Web. doi:10.1021/cm2012395.
Fulvio, Pasquale F, Dai, Sheng, Guo, Bingkun, Mahurin, Shannon Mark, Mayes, Richard T, Sun, Xiao-Guang, Veith, Gabriel M, Brown, Suree, & Adcock, Jamie. Low-Temperature Fluorination of Soft-Templated Mesoporous Carbons for a High-Power Lithium/Carbon Fluoride Battery. United States. doi:10.1021/cm2012395.
Fulvio, Pasquale F, Dai, Sheng, Guo, Bingkun, Mahurin, Shannon Mark, Mayes, Richard T, Sun, Xiao-Guang, Veith, Gabriel M, Brown, Suree, and Adcock, Jamie. Sat . "Low-Temperature Fluorination of Soft-Templated Mesoporous Carbons for a High-Power Lithium/Carbon Fluoride Battery". United States. doi:10.1021/cm2012395.
@article{osti_1029577,
title = {Low-Temperature Fluorination of Soft-Templated Mesoporous Carbons for a High-Power Lithium/Carbon Fluoride Battery},
author = {Fulvio, Pasquale F and Dai, Sheng and Guo, Bingkun and Mahurin, Shannon Mark and Mayes, Richard T and Sun, Xiao-Guang and Veith, Gabriel M and Brown, Suree and Adcock, Jamie},
abstractNote = {Soft-templated mesoporous carbons and activated mesoporous carbons were fluorinated using elemental fluorine between room temperature and 235 C. The mesoporous carbons were prepared via self-assembly synthesis of phloroglucinol formaldehyde as a carbon precursor in the presence of triblock ethylene oxide propylene oxide ethylene oxide copolymer BASF Pluronic F127 as the template. The F/C ratios ranged from 0.15 to 0.75 according to gravimetric, energy dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy analysis. Materials have mesopore diameters up to 11 nm and specific surface areas as high as 850 m2 g 1 after fluorination as calculated from nitrogen adsorption isotherms at 196 C. Furthermore, the materials exhibit higher discharge potentials and energy and power densities as well as faster reaction kinetics under high current densities than commercial carbon fluorides with similar fluorine contents when tested as cathodes for Li/CFx batteries.},
doi = {10.1021/cm2012395},
journal = {Chemistry of Materials},
issn = {0897-4756},
number = 20,
volume = 23,
place = {United States},
year = {2011},
month = {1}
}