There is provided an improved electrochemical energy storage device. The storage device includes using functionalized boron nitride nanoparticles as electroactive materials in the electrodes.

There is provided an improved electrochemical energy storage device. The storage device includes using functionalized boron nitride nanoparticles as electroactive materials in the electrodes.

A cathode includes: a mixed conductive layer, wherein the mixed conductive layer includes a core-shell structured particle having a core portion including a solid electrolyte and a shell portion including an electronic conductor, wherein the cathode is configured to use oxygen as a cathode active material.

A redox flow battery includes a cathode, an anode, a charge-carrying electrolyte, and an (a) oxidized and a (b) reduced form of an active material. The active material has the following formula: (D)-(L)-(A)-[(L)-(A)].sub.V-D.sub.Z(F1) or (D)-(L)-(A)-(L-D).sub.X (F2). In these formulae, each D is covalently bonded to an L, each L is covalently bonded to an A, x is a number from 0 to 5, v is a number from 0 to 5 and z is 0 or 1. D is an electron donor compound, L is a linker, and A is an electron acceptor compound. Each of D, L, and A has a particular structure.

A redox flow battery includes a cathode, an anode, a charge-carrying electrolyte, and an (a) oxidized and a (b) reduced form of an active material. The active material has the following formula: (D)-(L)-(A)-[(L)-(A)].sub.V-D.sub.Z(F1) or (D)-(L)-(A)-(L-D).sub.X (F2). In these formulae, each D is covalently bonded to an L, each L is covalently bonded to an A, x is a number from 0 to 5, v is a number from 0 to 5 and z is 0 or 1. D is an electron donor compound, L is a linker, and A is an electron acceptor compound. Each of D, L, and A has a particular structure.

A first negative electrode mixture layer contains a first negative electrode active material and a first water-soluble polymer material; and a second negative electrode mixture layer contains a second negative electrode active material and a second water-soluble polymer material. The ratio of the amount (S1) of the first water-soluble polymer material present on the surface of the first negative electrode active material to the amount (V1) of the first water-soluble polymer material present in voids among particles of the first negative electrode active material, namely S1/V1 is larger than the ratio of the amount (S2) of the second water-soluble polymer material present on the surface of the second negative electrode active material to the amount (V2) of the second water-soluble polymer material present in voids among particles of the second negative electrode active material, namely S2/V2.

The present disclosure relates to a two-dimensional Ni-organic framework/rGO composite including: a two-dimensional electroconductive Ni-organic framework in which Ni and an organic ligand containing a substituted or unsubstituted C.sub.6-C.sub.30 arylhexamine are repeatedly bonded in a branched form; and reduced graphene oxide (rGO). Thus, when a composite of reduced graphene oxide (rGO) and a two-dimensional Ni-MOF is prepared and used as an energy storage electrode material, the two-dimensional Ni-organic framework/rGO composite of the present disclosure can exhibit higher discharge capacity per weight due to the synergistic effect of rGO and Ni-MOF as compared to when Ni-MOF is used alone, and the composite can be used to manufacture a thin-film type electrode, which can be used as a next-generation energy storage electrode having high mechanical bending strength and energy density per volume.

The present disclosure relates to a two-dimensional Ni-organic framework/rGO composite including: a two-dimensional electroconductive Ni-organic framework in which Ni and an organic ligand containing a substituted or unsubstituted C.sub.6-C.sub.30 arylhexamine are repeatedly bonded in a branched form; and reduced graphene oxide (rGO). Thus, when a composite of reduced graphene oxide (rGO) and a two-dimensional Ni-MOF is prepared and used as an energy storage electrode material, the two-dimensional Ni-organic framework/rGO composite of the present disclosure can exhibit higher discharge capacity per weight due to the synergistic effect of rGO and Ni-MOF as compared to when Ni-MOF is used alone, and the composite can be used to manufacture a thin-film type electrode, which can be used as a next-generation energy storage electrode having high mechanical bending strength and energy density per volume.

The present disclosure relates to a cathode active material for a secondary battery, comprising a poly(S-co-VPA) vulcanized polymer, a preparation method thereof, and a lithium-sulfur secondary battery comprising the same.

The present invention relates to a range of halide organic salts and their use in a cathode of an electrical cell and in batteries. Elemental halides have attracted intense interest as promising electrodes for energy storage. However, they suffer from a number of inherent physicochemical drawbacks, including the volatility of iodine, the corrosiveness of liquid bromine. The salts of the present invention may serve as a cathode matched with a zinc anode avoiding these issues.