Abstract: A negative electrode plate for a lithium battery and a lithium-ion secondary battery including same are provided. The negative electrode plate includes a negative electrode current collector and a negative electrode material. The negative electrode material includes: a negative electrode active material including graphite and a silicon-based material; a conductive agent; a binder including carbon nanotubes; and a dispersing agent including one or both of lignosulfonate and humic acid.

Abstract: A positive electrode material for a lithium-ion battery, a method for preparing same, and a lithium-ion secondary battery including same. The positive electrode material includes a high-nickel material and a coating layer on the surface of the high-nickel material, wherein the coating layer comprises compound CxHy?nOzLin (I) of formula (I) and compound CxHy?n?1 OzLin+1 (II) of formula (II), wherein x, y, z and n are each independently integers where 1?x?10, 2?y?20, 2?z?12, and 1?n?3.

Abstract: A cathode electrode sheet, a preparation method thereof, and a lithium-ion battery are provided. The cathode electrode sheet comprises a cathode active material, a cathode conductive agent, a cathode binder, and a lithium organic acid, wherein based on the total weight of the cathode active material, the cathode conductive agent, the cathode binder, and the lithium organic acid, the content of the lithium organic acid is 0.14 wt % to 11.99 wt %.

Abstract: A negative electrode plate for a lithium battery and a lithium-ion secondary battery including same are provided. The negative electrode plate for a lithium battery including a current collector and a negative electrode material, wherein the negative electrode material includes graphite, silicon monoxide SiOx without carbon coating, and a conductive agent including a carbon nanotube, wherein 1.6>x>0; and a lithium-ion secondary battery including the negative electrode plate.

Abstract: A manganese dioxide positive electrode material, a positive electrode sheet and a preparation method therefor, and a zinc ion battery are provided. The manganese dioxide positive electrode material for a zinc ion battery includes a mixed material of micron-sized manganese dioxide particles and nano-sized manganese dioxide particles, an aqueous binder, and a conductive agent; wherein the micron-sized manganese dioxide particles have an average particle size of about 1 ?m to about 10 ?m, and the nano-sized manganese dioxide particles have an average particle size of about 100 nm to about 500 nm.

Abstract: A positive electrode composite material, a preparation method thereof, a positive electrode and a lithium ion secondary battery are provided. The positive electrode composite material includes a high-nickel positive electrode material; a lithium boron oxide coating a part of the surface of the high-nickel positive electrode material; and fluoride present in a dotted form on the other part of the surface of the high-nickel positive electrode material, the amount of residual lithium on the surface of the positive electrode composite material is less than about 0.3 wt %.

Abstract: A negative electrode material for a lithium battery and a lithium ion secondary battery including same are provided. The negative electrode material for a lithium battery includes a silicon monoxide satisfying, in terms of chromaticity, 30?L?50, 3?a?10, and 1.5?b?10, and preferably 35?L?45, 4?a?9, and 4?b?10, and having a total color difference ?E of 39??E?50 relative to black.

Abstract: The present application provides a positive electrode material for a lithium ion secondary battery and a preparation method therefor. The positive electrode material for a lithium ion secondary battery comprises polycrystalline particles of a ternary positive electrode material and a modifying material. The polycrystalline particles comprise a plurality of primary particles. The modifying materials are located on the surface of the polycrystalline particles and/or at the grain boundary interfaces between the primary particles, wherein the modifying material comprises an oxide of a positive pentavalent or positive hexavalent transition metal. By using the positive electrode material for a lithium ion secondary battery and the preparation method therefor of the present application, the problem of cracking of secondary particles of the material during the circulation process is avoided.

Abstract: A positive electrode composite material, a preparation method therefor, a positive electrode and a lithium ion secondary battery are provided. The positive electrode composite material includes: a positive electrode active material; and a coating layer coating the positive electrode active material, the coating layer includes one or more of a polysaccharide organic polymer, polyvinyl alcohol and polypropylene alcohol.

Abstract: The present invention provides a negative electrode composite material, a preparation method thereof, a negative electrode and a lithium ion secondary battery. The negative electrode composite material comprises negative electrode active material particulates and Li2CO3 and LiOH at the surface of the negative electrode active material particulates, the negative electrode active material particulates comprise: particles containing silicon oxide and at least one lithium silicate selected from Li2SiO3 and Li2Si2O5; and a carbon coating layer coating at least a part of surface of the particles, based on the weight of the negative electrode active material particulates, the content of Li2CO3 is greater than about 0 wt % and less than about 0.01 wt %, and the content of LiOH is greater than about 0 wt % and less than about 0.01 wt %.

Abstract: The present invention provides a negative electrode composite material, a preparation method thereof, a negative electrode and a lithium ion secondary battery. The negative electrode composite material comprises: negative electrode active material particulates and Li2CO3 and LiOH at the surface of the negative electrode active material particulates, the negative electrode active material particulates comprise: particles containing silicon oxide, Li2SiO3 and Li2Si2O5; and a carbon coating layer coating at least a part of surface of the particles, based on the weight of the negative electrode active material particulates, the content of Li2CO3 is greater than about 0.01 wt % and less than about 1 wt %, the content of LiOH is greater than about 0.001 wt % and less than about 0.1 wt %, and the weight ratio of Li2Si2O5 to Li2SiO3, i.e. Li2Si2O5/Li2SiO3 is in the range of about 1.00 to about 10.00.

Abstract: The present invention provides a positive electrode composite material, a preparation method thereof, a positive electrode and a lithium ion secondary battery. The positive electrode composite material comprises: a positive electrode matrix material doped with Mg element; and a fluoride present on the surface of the positive electrode matrix material in a dotted form, the fluoride containing MgF2.

Abstract: A composite silicon-based negative electrode material, a preparation method therefor, a negative electrode sheet comprising same, and a lithium-ion secondary battery are provided. The composite silicon-based negative electrode material comprises a silicon-based material core layer and a metal material shell layer, wherein the metal material shell layer coats the silicon-based material core layer, and the silicon-based material core layer comprises a permeation area formed by the permeation of the metal material shell layer into the silicon-based material core layer. By means of the composite silicon-based negative electrode material and the preparation method therefor of the present application, the conductivity of the negative electrode material is improved, the expansion rate of the core layer formed by the silicon-based material is limited, and the consumption of lithium ions caused by a reaction between an electrolyte and the surface of the silicon-based material is effectively reduced.

Abstract: A lithium ion secondary battery negative electrode additive includes polyaspartate salt and water.

Abstract: The present invention provides a negative electrode of lithium ion secondary battery, a preparation method thereof and a lithium ion secondary battery. The negative electrode of the lithium ion secondary battery comprises a negative electrode active material, a pre-lithiated conductive layer and a negative electrode current collector. By using the negative electrode of lithium ion secondary battery, the preparation method thereof and the lithium ion secondary battery of the present invention, technical effects of excellent electrochemical performance, especially excellent first discharge capacity and first time efficiency are achieved, and excellent negative electrode plate binding force is achieved.

Abstract: The present invention provides a composite cathode active material, which comprises a core layer comprising a cathode active material; a hydrogen fluoride barrier layer coating the core layer, the hydrogen fluoride barrier layer comprising a substance consisting of any one of Nb, Ba, Zr, Mn, Mg, Al and Ca or any combination thereof and any one of O, F, B and P or any combination thereof; and a physical barrier layer coating the hydrogen fluoride barrier layer. By using the composite cathode active material, preparation method thereof, cathode sheet and lithium ion secondary battery of the present invention, the contacting and reacting of the hydrogen fluoride with cathode active material are effectively prevented, the dissolution of the metal in the cathode active material is inhibited, the stability of the crystal structure in the bulk phase of the cathode active material is ensured, and the increase of the cycle retention rate and the decrease of the impedance growth rate are realized.

Abstract: The present disclosure provides a negative electrode additive for a lithium ion secondary battery and a negative electrode slurry containing the same. The negative electrode additive for a lithium ion secondary battery contains one of a lignin-based substance or a humic acid-based substance or a combination thereof. By means of the negative electrode additive for a lithium ion secondary battery and the negative electrode slurry for a lithium ion secondary battery containing the same of the present disclosure, effects of improving electrical performance of a lithium ion secondary battery at normal temperature and at a low temperature, and improving peel strength of the lithium ion secondary battery are achieved.

Abstract: The present disclosure provides a negative electrode additive for a lithium ion secondary battery and a negative electrode slurry containing the same. The negative electrode additive for a lithium ion secondary battery contains one of a lignin-based substance or a humic acid-based substance or a combination thereof. By means of the negative electrode additive for a lithium ion secondary battery and the negative electrode slurry for a lithium ion secondary battery containing the same of the present disclosure, effects of improving electrical performance of a lithium ion secondary battery at normal temperature and at a low temperature, and improving peel strength of the lithium ion secondary battery are achieved.

Abstract: The present disclosure provides a positive electrode active material for a lithium ion secondary battery. The positive electrode active material includes a material represented by LiCo(1????)A(?)B(?)O2, wherein the material is configured to have good cycling performance and thermal stability at high charging voltages, and to inhibit expansion of the secondary battery. The present disclosure further provides a positive electrode and a secondary battery using the same positive electrode active material.

Abstract: In one example embodiment, a core-shell type platinum-containing catalyst is allowed to reduce the amount of used platinum and has high catalytic activity and stability. In one example embodiment, the core-shell type platinum-containing catalyst includes a core particle (with an average particle diameter R1) made of a non-platinum element and a platinum shell layer (with an average thickness ts) satisfying 1.4 nm?R1?3.5 nm and 0.25 nm?ts?0.9 nm. The core particle includes an element satisfying Eout?3.0 eV, where average binding energy relative to the Fermi level of 5d orbital electrons of platinum present on an outermost surface of the shell layer is Eout. In a fuel cell including a platinum-containing catalyst which contains a Ru particle as a core particle, the output density at a current density of 300 mA/cm2 is 70 mW/cm2 or over, and an output retention ratio is approximately 90% or over.