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

Journal Article · Sat Jan 01 04:00:00 EST 2011 · Chemistry of Materials

DOI:https://doi.org/10.1021/cm2012395· OSTI ID:1029577

Fulvio, Pasquale F ^[1]; Dai, Sheng ^[1]; Guo, Bingkun ^[1]; Mahurin, Shannon Mark ^[1]; Mayes, Richard T ^[1]; Sun, Xiao-Guang ^[1]; Veith, Gabriel M ^[1]; Brown, Suree ^[1]; Adcock, Jamie ^[2]

---

1. ORNL
2. University of Tennessee, Knoxville (UTK)

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.

• Research Organization: Oak Ridge National Laboratory (ORNL)
• Sponsoring Organization: EE USDOE - Office of Energy Efficiency and Renewable Energy (EE); SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1029577
• Journal Information: Chemistry of Materials, Journal Name: Chemistry of Materials Journal Issue: 20 Vol. 23; ISSN CMATEX; ISSN 0897-4756
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
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