Abstract: A self-supported porous 3D flexible host anode for lithium metal secondary batteries having a primary coating >5 atomic wt % and in addition to <5 atomic wt % of at least two additional lithiophilic elements, leading to synergistic plating and stripping effect of the alkali ions, wherein all the coating elements have the capability of forming intermetallic alloys with lithium and/or between themselves within the potential window range of 1.5 V and ?0.5 V Vs Li/Li+, having a porosity of at least 70%, and a thickness between 10 ?m and 100 ?m, comprising a non-woven, woven or ordered arrangement of constituent fibres with a diameter ranging between 200 nm and 40 ?m.

Abstract: The present disclosure relates to a porous chalcogenide-based electrode including crystalline allotropes within the core, at least one of a glass, polymeric and amorphous chalcogenide present within the transition layer and/or a shell covering the surface of the active electrode material. The electrode includes a transition layer covalently bonded between a 2D material and the chalcogenide of the electrode material, a coating layer on top of the transition layer and including a 2D material, an electrode in which the volume of crystalline allotrope represents a buffer volume that compensates the volumetric fluctuation during battery cycling, and a chalcogenide electrode. The electrode active mass includes a dopant such as selenium and tellurium, wherein the mass content of sulfur in the cathode is above 50% per weight, wherein the coated electrode includes at least one sulfur allotrope that is doped with a chalcogenide, a halogen, or a mixture thereof.

Abstract: In an aspect, the present disclosure provides a heat-treated transition metal carbonitride MXene film annealed at high temperatures and a polymer composite comprising the same. In another aspect, the present disclosure provides a method for producing a heat-treated transition metal carbonitride MXene film comprising: obtaining a MXene aqueous solution containing dispersed 2-dimensional (2D) MXenes through an acid etching process; filtering the obtained MXene aqueous solution through a vacuum filtration process to produce a free-standing film; and annealing the produced free-standing film at high temperatures to obtain a heat-treated transition metal carbonitride MXene film. In still another aspect, the present disclosure provides an electromagnetic interference (EMI) shielding method comprising: superposing a coating comprising a heat-treated transition metal carbonitride MXene film on at least one surface of an object in a contact or non-contact manner.

Abstract: In an aspect, the present disclosure provides a heat-treated transition metal carbonitride MXene film annealed at high temperatures and a polymer composite comprising the same. In another aspect, the present disclosure provides a method for producing a heat-treated transition metal carbonitride MXene film comprising: obtaining a MXene aqueous solution containing dispersed 2-dimensional (2D) MXenes through an acid etching process; filtering the obtained MXene aqueous solution through a vacuum filtration process to produce a free-standing film; and annealing the produced free-standing film at high temperatures to obtain a heat-treated transition metal carbonitride MXene film. In still another aspect, the present disclosure provides an electromagnetic interference (EMI) shielding method comprising: superposing a coating comprising a heat-treated transition metal carbonitride MXene film on at least one surface of an object in a contact or non-contact manner.