A nanocomposite includes one or more graphene-based materials (GMs), a nitrogen-containing polymer (an N-polymer), and elemental sulfur (S). The nanocomposite is suitable for use as a stable, high capacity electrode for rechargeable batteries such as lithium-sulfur (Li—S) batteries. Example methods of fabricating a nanocomposite include the addition of an N-polymer to a dispersion (e.g., an aqueous dispersion) or slurry of GMs mixed with a sulfur sol. The N-polymer can interact strongly with the GMs to form a cross-linked network. In one embodiment, hydrothermal treatment of the aqueous dispersion or slurry is used to melt the sulfur such that it becomes distributed within the network formed by the GMs and the N-polymer. The resulting nanocomposite material can then be processed through the addition of one or more other binders and/or solvents, and formed into a final electrode.

An electrode including an electrode active material including lithium (Li) and a polymer layer coating at least a portion of the electrode active material is provided. The polymer layer includes a polymerization product of a monomer having Formula I: ##STR00001##
where R.sub.1 and R.sub.2 are independently an aryl or a branched or unbranched C.sub.1-C.sub.10 alkyl and X.sub.1 and X.sub.2 are independently chlorine (Cl), bromine (Br), or iodine (I).

The present invention relates to an electrochemical device comprising a) a positive electrode, b) a negative electrode, c) a separator, and d) a liquid electrolyte, wherein at least one of said positive electrode and said negative electrode is a gelled electrode comprising an electronic conductive substrate and directly adhered onto the electronic conductive substrate, at least one layer of a gelled electrode-forming composition, and wherein the d) liquid electrolyte comprises at least one organic carbonate and/or at least one ionic liquid, and at least one metal salt. The present invention also relates to a process for manufacturing an electrochemical device comprising at least one gelled electrode.

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.

There is provided a composite comprising a) a short chain sulfur; and b) a carbon-supported conductive polymer such as polyacrylonitrile, wherein sulfur atoms of said short chain sulfur are covalently linked to the conductive polymer of said carbon-supported conductive polymer via a C—S bond. A method of preparing said composite comprising polymerizing a plurality of monomers in the presence of a carbon scaffold, mixing elemental sulfur and heating the mixture to obtain said composite is also disclosed. An electrochemical cell comprising said composite as cathode, a sodium anode and a liquid electrolyte such as sodium trifluoromethanesulfonate dissolved in a mixture of solvents is disclosed.

The present invention provides an electrode for a non-aqueous electrolyte secondary battery, including: a current collector; and an electrode active material mixture layer containing an organosulfur electrode active material, a conductive assistant, and a binder, wherein the electrode active material mixture layer contains 0.01 mass % to 0.4 mass % of the binder with respect to a total mass of the electrode active material mixture layer, and wherein the electrode active material mixture layer is formed on the current collector.

The present disclosure relates to an organic electrode manufactured into a non-woven type by using an electro-spin method, a stretchable battery which is stretchable and shrinkable, utilizing same, and a method of manufacturing the battery.

The present invention relates to a solid-state battery, particularly a lithium-ion solid-state battery, composed of one or more battery cells, which have an ion-conducting solid matrix (2) as solid electrolyte, which matrix is embedded between two electrodes (1, 3). The proposed solid-state battery is characterized in that the solid matrix (2) is formed form camphor, 2-adamantanone or a mixture of one of the two with one or more other substances. Owing to the use of camphor or 2-adamantanone, the solid electrolyte is mechanically stable and has good ionic conductivity in a wide temperature range.

An anode interlayer for an all-solid secondary battery includes: an active material capable of undergoing lithiation and delithiation; a first conductive binder; and a second conductive binder, wherein the active material includes carbon or a combination of carbon and a first metal, the first conductive binder includes an ion-conductive polymer, the ion-conductive polymer includes lithium as a substituent, and the second conductive binder includes an electron-conductive polymer.

Inorganic-based lithium mixed electrode materials have a low charge transfer rate and thus have poor fast charging or discharging characteristics. Positive electrode active materials include LCO (lithium cobalt oxide, LiCoO.sub.2), NCM (nickel cobalt manganese, Li(NiCoMn)O.sub.2), NCA(nickel cobalt aluminum, Li(NiCoAl)O.sub.2), LMO(lithium manganese oxide, LiMn.sub.2O.sub.4), LFP(Lithium iron phosphate, LiFePO.sub.4), etc. High nickel technology is attracting attention because if nickel is used a lot, the capacity of lithium ions can be increased. However, as the content of nickel increases, the reactivity increases, resulting in a risk of explosion of the battery and deterioration in cycle life characteristics. As the negative active material, carbon, transition metal oxide, nickel metal, silicon-nickel alloy, and the like may be used. As the carbon, natural graphite, artificial graphite, soft carbon, hard carbon, etc. can be used. As the transition metal oxide, C.sub.o3O.sub.4, CoO, FeO, NiO, and the like can be used.

The present invention adds a polymer additive containing free radicals in the molecular structure to the electrode to solve the problems of the existing secondary battery. The polymer additive contains free radicals and undergoes an oxidation-reduction reaction through ionic interactions. When this polymer additive is included in the electrode, the fast charging and fast discharging characteristics are improved, and the stability of the electrode is improved. When the stability of the electrode is improved, the cycle life characteristics of the electrode are improved. Because the polymer additive participates in the electrochemical reaction, it increases the practical capacity of nickel. When dissolved in a solvent, the polymer additive can increase the viscosity and act as a binder.