The present invention(s) is directed to novel conductive M.sub.n+1X.sub.n(T.sub.s) compositions exhibiting high volumetric capacitances, and methods of making the same. The present invention(s) is also directed to novel conductive M.sub.n+1X.sub.n(T.sub.s) compositions, methods of preparing transparent conductors using these materials, and products derived from these methods.

The present invention relates to a method for preparation of a powder comprising at least one carbide of at least one metal, comprising the steps consisting of: (a) preparing a solution comprising at least one organic gelling agent and at least one inorganic salt of at least one metal in a solvent; (b) modifying the pH of the solution prepared in step (a) in such a way as to precipitate said at least one metal and to obtain a colloidal suspension comprising nanoparticles of oxyhydroxides of said at least one metal; (c) removing the solvent from the colloidal suspension obtained in step (b) by which means a precursor of at least one carbide of at least one metal is obtained; and (d) subjecting the precursor obtained in step (c) to a thermal treatment in order to transform same into a powder comprising at least one carbide of at least one metal. The present invention also relates to the powder thus prepared and the various uses thereof.

The present disclosure is directed to antennas for transmitting and/or receiving electrical signals comprising a MXene composition, devices comprising these antennas, and methods of transmitting and receiving signals using these antennas.

The present disclosure is directed to antennas for transmitting and/or receiving electrical signals comprising a MXene composition, devices comprising these antennas, and methods of transmitting and receiving signals using these antennas.

Disclosed herein is a method for preparing ultrafine titanium carbonitride powder under a relatively low temperature condition that obviates a grinding process. This method includes the steps of: a mixing step for contacting titanium dioxide (TiO2), calcium (Ca) and carbon (C) under an inert atmosphere, a synthesis step for reacting the resultant mixture by heating at a temperature of about 600-1500° C. or lower under a nitrogen atmosphere; and a washing step for removing calcium oxide by washing this mixture.

This disclosure is directed to composites comprising a polymeric film coated on one or both sides with a MXene material, as well as lithium metal electrodes and components thereof, including MXene-polymer composite separators.

The present disclosure describes electrochromic devices comprising transparent conductive layer acting as an electrode, an active electrochromic film, an ion conductor, and an ion storage film at least one of which comprises at least one MXene material.

An electrical power generator includes an M-gel layer that includes MXene and a hydrogel, first and second flexible layers that sandwich the M-gel layer so that the M-gel layer is sealed from an ambient, and a single terminal electrically connected to the M-gel layer. The M-gel layer is configured to transform acoustic energy into electrical energy.

An electrical power generator includes an M-gel layer that includes MXene and a hydrogel, first and second flexible layers that sandwich the M-gel layer so that the M-gel layer is sealed from an ambient, and a single terminal electrically connected to the M-gel layer. The M-gel layer is configured to transform acoustic energy into electrical energy.

A display substrate having a transparent electrode and manufacturing method thereof includes a transparent substrate, and a patterned channel is disposed on the transparent substrate; a transparent electrode including a composite material of MXene material and polyvinylpyrrolidone, and the transparent electrode is filled in the patterned channel. The transparent electrode of embodiments of the present disclosure has advantages of high transmittance, high conductivity, great machinability, great substrate affinity, great ductility, etc.