The present invention is concerned with novel compounds derived from polyquinonic ionic compounds and their use in electrochemical generators.

A process can be used to produce a charge storage unit, especially a secondary battery, the electrodes of which contain an organic redox-active polymer, and which includes a polymeric solid electrolyte. The solid electrolyte is obtained by polymerizing from mixtures of acrylates with methacrylates in the presence of at least one ionic liquid, which imparts advantageous properties to the charge storage unit.

A battery includes a cathode with a metal halide and an electrically conductive material, wherein the metal halide acts as an active cathode material; a porous silicon anode with a surface having pores with a depth of about 0.5 microns to about 500 microns, and a metal on the surface and in at least some of the pores thereof; and an electrolyte contacting the anode and the cathode, wherein the electrolyte includes a nitrile moiety.

A process produces a shaped organic charge storage unit, especially a secondary battery, the electrodes of which contain an organic redox-active polymer, and which includes a polymeric solid electrolyte. Compared to conventional folded charge storage units, the charge storage unit shows greater resistance to deformation, which is manifested in a lower drop in capacity and a reduced tendency to fracture in the shaping process.

A composite electrode comprising a charge-conducting material, a charge-providing material bound to the charge-conducting material, and a plurality of single-walled carbon nanotubes bound to a surface of the charge-providing material. High-capacity electroactive materials that assure high performance are a prerequisite for ubiquitous adoption of technologies that require high energy/power density lithium (Li)-ion batteries, such as smart Internet of Things (IoT) devices and electric vehicles (EVs). Improved electrode performance and lifetimes are desirable. The disclosed electrode can have a Coulombic efficiency of 99% or greater, and a stable capacity retention after 100 cycles or more. Methods of making a composite electrode are disclosed.

The present invention provides a sulfur-modified polyacrylonitrile, which has a total content of sulfur of from 30 mass % to 55 mass %, and has a value for the calculation formula (1) defined in Description of less than 0.08, an electrode active material containing the same, an electrode for a secondary battery including the electrode active material, a method of manufacturing the electrode, and a non-aqueous electrolyte secondary battery using the electrode.

The present invention relates to a negative electrode for a lithium secondary battery, and a lithium secondary battery including the same, wherein the negative electrode comprises a current collector, and a coating layer which is located on the current collector and comprises polyvinylidene fluoride polymer and LiF.

Disclosed is a lithium-sulfur battery capable of improving cycle lifetime performance, by using together with a positive electrode containing a sulfur-modified polyacrylonitrile (S-PAN)-based compound as an active material and a specific electrolyte showing a synergistic effect with it, so that the problems of dendrite formation and electrolyte decomposition and depletion, which occur when lithium metal is used as a negative electrode, are prevented. The lithium-sulfur battery comprises a positive electrode comprising at least one sulfur-modified polyacrylonitrile-based compound as an active material; lithium metal negative electrode; and an electrolyte containing a first solvent containing a heterocyclic compound containing one or more double bonds and at the same time containing any one of an oxygen atom and a sulfur atom, a second solvent containing diglyme and lithium salt.

The disclosure provides rechargeable lithium ion batteries comprising at least one lithium salt-graphite composite electrode. In particular, the disclosure provides a rechargeable “water-in-bisalt” lithium ion battery with a high potential where at least a portion of the lithium salt is phase separated from the aqueous electrolyte, and where the anionic-redox reaction occurs within the graphitic lattice.

This electrically conductive composition includes a thermoplastic elastomer and flaky graphite, the melt viscosity of the thermoplastic elastomer at 200° C. in a low-shear zone with a shear rate of 60 s.sup.−1 to 200 s.sup.−1 being 50 Pa.Math.s to 1400 Pa.Math.s, and the roundness of the flaky graphite being 0.5 or less. This method for producing a sheet-form flexible electrode has a kneading step for kneading expanded graphite and a thermoplastic elastomer having a melt viscosity of 50 Pa.Math.s to 1400 Pa.Math.s at 200° C. in a low-shear zone with a shear rate of 60 s.sup.−1 to 200 s−.sup.1 to produce the electrically conductive composition, and a molding step for molding the electrically conductive composition into the form of a sheet by injection molding or extrusion molding.