Methods for forming polymeric protective layers on magnesium anodes for magnesium batteries include placing a solution of electropolymerizable monomers onto all exposed surfaces of a magnesium anode, and electropolymerizing the monomers in the solution. The monomers can be glycidyl methacrylate, a salt of 3-sulfopropyl methacrylate, or a mixture of the two. Protected magnesium foam anodes for 3-D magnesium batteries have a magnesium foam electrolyte, and a polymeric coating covering all exposed surfaces of the magnesium foam electrolyte. The polymeric protective coating formed of (poly)glycidyl methacrylate, poly(3-sulfopropyl methacrylate), or a copolymer of the two.

According to the present invention, an electrochemical device includes: a positive electrode containing, as a positive electrode active material, a conductive polymer that is to be doped and dedoped with anions, a negative electrode containing a negative electrode active material that occludes and releases lithium ions, and an electrolytic solution containing anions and lithium ions. In a charged state of the electrochemical device, an amount A (mol) of anions that are doped into the conductive polymer and are contained in the positive electrode and an amount B (mol) of the anions contained in the electrolytic solution satisfy a relational expression: 1.1B/A2.8.

Provided is method of producing graphene-embraced anode particulates for a lithium battery, the method comprising: (A) providing anode active material-decorated carbon or graphite particles, wherein the carbon or graphite particles have a diameter or thickness from 500 nm to 50 ?m and the anode active material, in a form of particles or coating having a diameter or thickness from 0.5 nm to 2 ?m, is bonded to surfaces of the carbon or graphite particles; and (B) embracing the anode active material-decorated carbon or graphite particles with a shell comprising multiple graphene sheets to produce the graphene-embraced anode particulates.

Method (100) for making a cathode for secondary battery, including mixing (102) an active material and a conductive material with an electron beam curable pre-polymer so as to obtain a solvent-free mixture made of the active material, the conductive material and the pre-polymer, passing the solvent-free mixture in a Moisture Powder Sheeting device, polymerizing (108) the pre-polymer with an electron beam so as to obtain a polymerized active layer on the metallic foil, pressing (110) the polymerized active layer on the metallic foil at room temperature so as to increase the density of the polymer active layer.

A composition for making a cathode for secondary battery, the composition including an active material, a conductive material and an electron beam curable pre-polymer, the composition being solvent-free. A cathode made from the composition and a secondary battery including the cathode.

A composite having an electrically conductive substrate and a polymer derived from a vinyl-containing siloxane monomer coating on the substrate. A method of electropolymerizing a vinyl-containing siloxane monomer to form a coating on an electrically conductive substrate.

A negative electrode composition includes a silicon containing material and a crosslinked polymer containing coating surrounding at least a portion of the silicon containing material. The crosslinked polymer containing coating comprises a (co)polymer derived from polymerization of one or more vinylic monomers comprising a carboxyl or carboxylate group.

The present invention relates to a method for manufacturing a binder composition for a lithium-ion secondary battery electrode. The method comprises a step of dissolving a polymer having a melting point in a range of 50 C. to 150 C. in a monomer and obtaining a monomer solution in which the polymer is dissolved in the monomer; and a step of obtaining a composite polymer particle by subjecting the monomer solution to suspension polymerization or emulsion polymerization in an aqueous medium. The binder composition contains the composite polymer particle.

The invention concerns an electrode assembly (10) for a battery cell (2), comprising an anode (11) and a cathode (12) that are separated from one another by means of a separator (18), an electrically conductive layer (32) being arranged on the separator (18) and the electrically conductive layer (32) being covered at least partially with a protective film (34). The protective film (34) is a dense passivation layer or a polymer coating. The invention also concerns a battery cell (2), comprising at least one electrode assembly (10).

Articles and methods involving electrochemical cells and/or electrochemical cell preproducts comprising passivating agents are generally provided. In certain embodiments, an electrochemical cell includes first and second passivating agents. In some embodiments, an electrochemical cell may include a first electrode comprising a first surface, a second electrode (e.g., a counter electrode with respect to the first electrode) comprising a second surface, a first passivating agent configured and arranged to passivate the first surface, and a second passivating agent configured and arranged to passivate the second surface.

The present invention relates to a process for polymerization, wherein the monomers are used in the form of solid particles in an aqueous phase. The polymers obtained thereby can be oxidized further to polymers which can be used as electrical charge storage means, especially secondary batteries.