A method for manufacturing an electrochemical device, implementing a process for manufacturing a porous electrode having a porous layer deposited on a substrate, the porous layer having a porosity of between 20% and 60% by volume and pores with an average diameter of less than 50 nm. The method includes providing a substrate and a colloidal suspension including aggregates or agglomerates of monodisperse primary nanoparticles of an active electrode material, having an average primary diameter of between 2 and 60 nm, the aggregates or agglomerates having an average diameter of between 50 nm and 300 nm, then depositing a layer from the colloidal suspension on the substrate, then drying and consolidating the layer to obtain a mesoporous layer, and then depositing a coating of an electronically conductive material on and inside the pores of the layer.

The present invention is directed towards an electrodepositable coating composition comprising an electrochemically active material comprising a protective coating; an electrodepositable binder; and an aqueous medium. Also disclosed herein is a method of coating a substrate, as well as coated substrates and electrical storage devices.

Provided are methods of preparing a separator/anode assembly for use in an electric current producing cell, wherein the assembly comprises an anode current collector layer interposed between a first anode layer and a second anode layer and a porous separator layer on the side of the first anode layer opposite to the anode current collector layer, wherein the first anode layer is coated directly on the separator layer.

The present application relates to an electrode comprising pillars of conductors covered with at least two layers for improving the deposition of lithium, and the electrochemical cells and batteries comprising same.

Carbon based electrodes for use in battery cells. The carbon-based electrodes can be a pure binderless carbon electrode. The electrode may further include a carbon nanotube-based interlayer comprising about 1-30% oxidized carbon nanotubes, wherein the interlayer can be configured to act as a secondary pathway to a current collector of a battery cell. Some of the formed cathodes can be used in battery cells including a lithium based anode and a separator formed between the cathode and anode. An electrolyte solution can be utilized to expose the cathode to an activated sulfur material.

Alkali metal secondary batteries that include anodes constructed from alkali metal foil applied to only one side of a porous current collector metal foil. Openings in the porous current collectors permit alkali metal accessibility on both sides of the anode structure. Such anode constructions enable the utilization of lower-cost and more commonly available alkali metal foil thickness, while still achieving high cell cycle life at a significantly reduced cost. Aspects of the present disclosure also include batteries with porous current collectors having increased volumetric and gravimetric energy densities, and methods of manufacturing anodes with porous current collectors.

A greenhouse gas negative emissions system. Embodiments use a dissociating reactor to produce fuel as well as carbonaceous materials, both of which are used in environmentally-clean fuel cells. A high-power reactor harmlessly dissociates methane into solid carbon and hydrogen. The methane is dissociated rather than being burned, thus permanently abating greenhouse gas emissions that would result from combustion of methane thus, the reactor operates as a negative emissions system. The dissociated hydrogen is distributed as hydrogen gas (H.sub.2). The hydrogen gas is stored for use in a clean fuel consuming apparatus that converts H.sub.2 to water (H.sub.2O) and electric energy. A first portion of the dissociated carbon is used to produce a fuel cell array that is used in environmentally-clean vehicles. A second portion of the dissociated carbon is used in other carbon-containing applications, such as lightweight carbon fiber components, carbon fiber reinforced plastics, carbon-containing building materials, and so on.

Provided are methods of preparing a separator/anode assembly for use in an electric current producing cell, wherein the assembly comprises an anode current collector layer interposed between a first anode layer and a second anode layer and a porous separator layer on the side of the first anode layer opposite to the anode current collector layer, wherein the first anode layer is coated directly on the separator layer.

A battery electrode composition is provided that comprises a composite material comprising one or more nanocomposites. The nanocomposites may each comprise a planar substrate backbone having a curved geometrical structure, and an active material forming a continuous or substantially continuous film at least partially encasing the substrate backbone. To form an electrode from the electrode composition, a plurality of electrically-interconnected nanocomposites of this type may be aggregated into one or more three-dimensional agglomerations, such as substantially spherical or ellipsoidal granules.

The present invention relates to the field of lithium ion battery technologies, and in particular, to a silicon-carbon negative electrode material for a lithium ion battery and a preparation method therefor. The negative electrode material includes nano-silicon and a gas-phase carbon source, where the nano-silicon is dispersed in the entire composite material, a part of a surface of the nano-silicon is covered by a vapor-deposited carbon source, and the nano-silicon has a median particle diameter D50 of 100 nm or below; a grain size of the nano-silicon is 10 nm or below; the vapor-deposited carbon source has an average thickness of 10-200 nm; the nano-silicon includes oxygen, the mass content of the oxygen element is 5%-30%, and the negative electrode material includes 60%-90% of nano-silicon by weight and 10%-40% of gas-phase carbon source by weight. Compared with the prior art, the silicon-carbon negative electrode material for a lithium ion battery, which is prepared according to the present invention, has excellent electrochemical performance.