What question did this study set out to answer?

To evaluate how different carbon precursors affect the chemical structure and electrochemical performance of carbon fluoride synthesized at room temperature.

January 1, 2001Journal of The Electrochemical Society

The Effect of Carbon Starting Material on Carbon Fluoride Synthesized at Room Temperature: Characterization and Electrochemistry

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Authors

MRMichael J. RootEnergy Storage Systems (United States)RDRebecca L. DumasACT Foundation RYRachid YazamiInstitut polytechnique de Grenoble

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Implication

Experimental study reveals enhanced energy density in room-temperature synthesized carbon fluorides, indicating lower graphitization improves electrochemical discharge performance.

Key Points

To evaluate how different carbon precursors affect the chemical structure and electrochemical performance of carbon fluoride synthesized at room temperature.
Synthesized carbon fluorine compounds (CxF) at room temperature from natural graphite, petroleum coke, and coal-tar-pitch coke using fluorine gas catalyzed by HF and IF5.
Characterized materials using elemental analysis, X-ray diffraction, X-ray photoelectron spectroscopy, and infrared spectroscopy.
Measured electrochemical properties including reduction potentials, discharge voltages, and discharge capacities compared to commercial CFx.
Synthesized CxF materials demonstrated higher reduction potentials and discharge voltages than commercial CFx, yielding higher overall energy densities despite lower total discharge capacities.
Petroleum coke pretreated at 1700°C exhibited higher discharge capacities than coke treated at 2600°C, indicating that lower degrees of graphitization improve discharge performance.
Natural graphite particles <10 μm achieved greater mass-based discharge capacity but lower fluorine-utilization efficiency than 20–40 μm particles, whereas coal-tar-pitch coke yielded poor discharge capacities.

Cite This Study

Root et al. (2001) studied this question.

synapsesocial.com/papers/6a951d6757dad826d8f5909a https://doi.org/10.1149/1.1354612

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Implication

Experimental study reveals enhanced energy density in room-temperature synthesized carbon fluorides, indicating lower graphitization improves electrochemical discharge performance.

The Effect of Carbon Starting Material on Carbon Fluoride Synthesized at Room Temperature: Characterization and Electrochemistry

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Key Points

Cite This Study

The Effect of Carbon Starting Material on Carbon Fluoride Synthesized at Room Temperature: Characterization and Electrochemistry

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Implication

Key Points

Cite This Study

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