A device for producing fluorine gas has a first flow path configured to send a fluid from the inside of an electrolytic cell through a mist removal unit configured to remove mist from the fluid to a fluorine gas selection unit and a second flow path configured to send the fluid from the inside of the electrolytic cell to the fluorine gas selection unit without passing through the mist removal unit and has a flow path switching unit configured to switch a flow path through which the fluid flows depending on the average particle size of the mist measured by an average particle size measurement unit. The second flow path has a clogging suppression mechanism configured to suppress clogging of the second flow path by the mist.

Embodiments of the present disclosure relate to methods and systems for providing an electrolysis reaction in a molten carbonate electrolyte to synthesize helical carbon nanostructures (HCNSs). The electrolyte, electrode composition, current density, temperature and additives all may have important roles in the formation of HCNS. With control of these parameters, a variety of specific, uniform high yield HCNS can be synthesized by molten carbonate electrolysis, according to embodiments of the present disclosure.

A method of producing graphite may include beneficiating an amount of coal to form a coal char, grinding the coal char to produce a crushed char and placing the crushed char in a porous container. Then, the method includes immersing the porous container in a molten salt bath. The molten salt bath includes a graphite anode. The method further includes applying an electrical potential across the porous container and the graphite anode such that a graphite deposit forms on the graphite anode. The graphite anode is removed from the molten salt bath and the graphite deposit is separated from the graphite anode to produce graphite fragments.

A method of producing graphite may include beneficiating an amount of coal to form a coal char, grinding the coal char to produce a crushed char and placing the crushed char in a porous container. Then, the method includes immersing the porous container in a molten salt bath. The molten salt bath includes a graphite anode. The method further includes applying an electrical potential across the porous container and the graphite anode such that a graphite deposit forms on the graphite anode. The graphite anode is removed from the molten salt bath and the graphite deposit is separated from the graphite anode to produce graphite fragments.

The specification discloses methods and apparatus for producing carbon black from CO.sub.2 by way of a reactor having a chamber filled with a molten salt electrolyte. On application of a current through one or more cathodes and one or more anodes affixed to the reactor, dissolved CO.sub.2 within the molten salt electrolyte is converted into carbon black and oxygen gas. The carbon black is collected.

The specification discloses methods and apparatus for producing carbon black from CO.sub.2 by way of a reactor having a chamber filled with a molten salt electrolyte. On application of a current through one or more cathodes and one or more anodes affixed to the reactor, dissolved CO.sub.2 within the molten salt electrolyte is converted into carbon black and oxygen gas. The carbon black is collected.

Embodiments of the present disclosure relate to a process for making a carbanogel buckypaper product. Such carbanogel buckypaper product may be imparted with enhanced properties as compared to other buckypaper products. In some embodiments of the present disclosure, the carbanogel can be generated by an electrolysis process that can transform a carbon-containing gas into a carbon nanomaterial.

Embodiments of the present disclosure relate to a process for making a carbanogel buckypaper product. Such carbanogel buckypaper product may be imparted with enhanced properties as compared to other buckypaper products. In some embodiments of the present disclosure, the carbanogel can be generated by an electrolysis process that can transform a carbon-containing gas into a carbon nanomaterial.

A manufacturing apparatus of carbide of the present disclosure includes a tank, a lid, a molten salt crucible, an electrode assembly, an air intake device and a heating device. The lid is connected to the tank to jointly delimit a compartment. The molten salt crucible is disposed in the compartment for containing a salt. The electrode assembly includes a working electrode and a counter electrode. An end of the working electrode and an end of the counter electrode both contact the salt in the molten salt crucible, and the end of the working electrode contacting the salt is for fixing a reactant tablet. The air intake device is configured to exchange the air in the compartment. The heating device is configured to heat the compartment.

A manufacturing method of a carbide includes steps as follows. A carbon source is provided, a contacting step, a heating step and an electrochemical step are performed. The carbon source includes an amorphous carbon and a compound. The compound is a chalcogen compound, a pnictide compound, a halide, a hydroxide or a salt of a metal or a metalloid. In the contacting step, the carbon source is disposed in an alkaline earth metal halide to form a reactant. In the heating step, the reactant is heated to form a heated reactant. In the electrochemical step, a current is applied to the heated reactant, wherein the current passes through the carbon source, so as to make the alkaline earth metal halide, the amorphous carbon and the compound react with one another to form a carbide of the metal or the metalloid.