The present application belongs to a technical field of modifying natural polymer materials, provides a high-viscosity lithium carboxymethyl cellulose and preparation method therefor and application thereof. Raw materials are fed into a reactor, and the high-viscosity lithium carboxymethyl cellulose is prepared through an alkalization reaction, an etherification reaction, an acidification reaction and a substitution reaction. The prepared high-viscosity lithium carboxymethyl cellulose can be used for preparing a negative electrode plate of a lithium-ion battery. Compared with the existing lithium carboxymethyl cellulose, the high-viscosity lithium carboxymethyl cellulose provided by the present application can not only reduce an application amount in preparing a negative electrode plate of a lithium-ion battery so as to save a using cost, but also promote an electrochemical performance of the material in combination with a sodium lignin sulfonate.

Described herein are composite battery electrode structures and methods of forming such structures. Composite battery electrode structures comprise active electrode material structures and polymer structures such that at least a portion of the polymer structures at least partially protrudes into some of the high capacity structures. Some of these polymer structures may be fully enclosed by the active electrode material structures. Other polymer structures may only partially extend inside the active electrode material structures. Furthermore, additional polymer structures may be bound to the external surface of the active electrode material structures. Composite battery electrode structures may be formed using low-temperature deposition techniques, such as solvent-thermal synthesis, direct chemical reduction, and electrochemical deposition. More specifically, composite battery electrode structures may be formed from a solution comprising active electrode material precursors and polymer precursors, e.g., dissolved polymers, monomers, and/or conductive polymers electrically coupled to the working electrodes.

A negative electrode, a method for manufacturing the negative electrode, a secondary battery, and a method for manufacturing the secondary battery, wherein the negative electrode includes a negative electrode current collector, and a negative electrode active material layer. The negative electrode active material layer includes a first negative electrode active material layer on at least one surface of the negative electrode current collector and a second negative electrode active material layer on the first negative electrode active material layer. The first negative electrode active material layer includes ethylene carbonate.

A negative electrode, a method for manufacturing the negative electrode, a secondary battery, and a method for manufacturing the secondary battery, wherein the negative electrode includes a negative electrode current collector, and a negative electrode active material layer. The negative electrode active material layer includes a first negative electrode active material layer on at least one surface of the negative electrode current collector and a second negative electrode active material layer on the first negative electrode active material layer. The first negative electrode active material layer includes ethylene carbonate.

A battery, having polyvalent aluminum metal as the electrochemically active anode material and also including a solid ionically conducting polymer material.

The present invention relates to novel combinations of redox active compounds for use as redox flow battery electrolytes. The invention further provides kits comprising these combinations, redox flow batteries, and method using the combinations, kits and redox flow batteries of the invention.

The present invention relates to novel combinations of redox active compounds for use as redox flow battery electrolytes. The invention further provides kits comprising these combinations, redox flow batteries, and method using the combinations, kits and redox flow batteries of the invention.

Electrochemical device 200 disclosed includes positive electrode 10 and negative electrode 20. Positive electrode 10 includes a positive electrode material layer. The positive electrode material layer contains particles of an active material and a conductive agent. The cohesive force between the particles of the active material and the conductive agent is greater than the cohesive force between the conductive agent.

Disclosed are a positive electrode plate and a lithium-ion secondary battery containing the positive electrode plate. In the present disclosure, a polymer electrolyte prepared from a polymer that is different from a polymer used in the conventional technology, and the solid electrolyte, having not only a binding function but also a lithium-conducting function, may replace a binder and a solid electrolyte in an existing electrode plate, so that transmission performance of lithium ions can be effectively improved, and an internal resistance of a solid-state battery can be reduced. In addition, a porosity of a positive electrode plate containing the solid electrolyte is low. This effectively improves energy density and cycling performance of the solid-state battery. The positive electrode plate containing the solid electrolyte may be applied to a battery system having high energy density, thereby broadening a disclosure range of the positive electrode plate.

A cathode material and a fabricating method thereof, and a lithium-ion battery are described. The cathode material is a 1D metal-organic coordination polymer of [CuL(Py).sub.2].sub.n, and its structure is formed by interlinking organic ligands (L) and metals (Cu). The cathode material can use redox active sites on both the metal and organic ligand to carry out multi-electron transfer. A C≡N bond contained in L together with a benzene ring of L in an adjacent polymer chain form a weak interaction of C≡N . . . π. In addition, a Py of adjacent polymer chains also have an interaction of π . . . π. Therefore, [CuL(Py).sub.2].sub.n chains are closely interlaced and packed, but there is still enough regular space for lithium ions to enter and exit quickly, so it can be charged and discharged rapidly and exhibits high power density.