Abstract: The present application relates to a field of anode material, and a silicon carbon composite anode material and preparation method thereof, and a lithium ion battery provided. The silicon carbon composite anode material includes a silicon-based active particle, a conductive material, and a carbon coating layer, where the carbon coating layer is present on surface of the silicon-based active particle and/or the conductive material; and a semi-width of an X-ray diffraction angle (2?) of the silicon-based active particle on a crystal face (111) is greater than or equal to 0.5 degree when X-ray diffraction of the silicon-based active particle is tested with CuK? ray. The silicon carbon composite anode material and preparation method thereof, and a lithium ion battery can effectively inhibit volume expansion of anode material and improve cycle performance of battery.

Abstract: Provided is an anode material and a battery. The anode material includes a carbon matrix and an active substance, and at least a portion of the active substance is distributed in the carbon matrix; and surface cleanliness of the anode material is ?, and ??60%. The anode material and the battery provided in the present disclosure can alleviate cyclic attenuation of the anode material, reduce side reactions between the anode material and an electrolyte solution, and reduce a gas production phenomenon of the anode material, thereby comprehensively improving the capacity, expansion performance, and cycling performance of the anode material.

Abstract: The present disclosure relates to the field of negative electrode materials, and provides a negative electrode material and a preparation method therefor, and a lithium ion battery. The negative electrode material comprises an aggregate, the aggregate comprising an active substance and a carbon material. The mass percentage of the active substance in the aggregate gradually decreases from the center to the surface of the aggregate. The negative electrode material provided by the present disclosure can effectively suppress volume expansion of the negative electrode material and improve battery cycle performance.

Abstract: A core-shell composite negative electrode material is made according to a preparation method and includes an application thereof. The composite negative electrode material includes: a core formed by a first active substance and a second active substance, and a carbon-coated shell serving as a third active substance. The first active substance is a sheet-like silicon-based material, the second active substance is a sheet-like graphite material, and the third substance is the carbon-coated shell. The composite material is applied to the negative electrode of a lithium ion battery, and has high specific capacity, wherein the capacity is greater than 400 mAh/g, and excellent cycle life.

Abstract: Provided is an anode material, a negative electrode plate and a secondary battery. The anode material includes a core body and a carbon coating layer that coats at least a partial surface of the core body, and the core body includes a matrix and an active substance. A 10-day gas production A of the anode material is less than or equal to 100 mL/kg, and the 10-day gas production A is measured by a drainage method. A residual carbon rate of the anode material is ? = m 3 - m 2 m 1 × 100 ? % , which is less than or equal to 20%. The secondary battery based on the above anode material has lower electrode plate expansion rate, great capacity and cycle stability.

Abstract: Provided are anode material, negative electrode plate and battery. The anode material includes a carbon matrix and a silicon-based active substance; the anode material contains an alkali metal element, an alkaline earth metal element, and an oxygen element, the alkali metal element includes Na and/or K, and the alkaline earth metal element includes Mg and/or Ca; a mass content of the alkali metal element is A ppm, a mass content of the alkaline earth metal element is B ppm, and a mass content of the oxygen element is E %; and the anode material satisfies the following relationship: 1×10?5?(B/A)×E?5×102. The anode material provided in the present application can enhance the cycling stability of the anode material while increasing the specific capacity of the anode material.

Abstract: A carbon material, an anode material and a battery provided. The carbon material has a total pore volume of 0.5 cm3/g to 1.6 cm3/g. The carbon material has a crush strength of U1 kN/cm2, where 0.05?U1?0.3. The carbon material has appropriate pores providing sufficient storage space for the silicon material, relieving volume expansion of the silicon material. Moreover, crush strength of the carbon material is controlled within an appropriate range, allowing the carbon material to have an excellent structure stability. Thus, collapse and crush of structure of the carbon material caused by volume expansion during lithiation and delithiation are reduced, and occurrence of a side reaction is reduced, thereby improving capacity and cycling performance of the anode material.

Abstract: The present application relates to an anode material and a lithium-ion battery. The anode material includes an active material including a porous matrix and a silicon matrix. At least a portion of the silicon matrix is distributed in pores of the porous matrix. In the infrared spectrum obtained by testing the anode material using an infrared spectrometer, there are a stretching vibration peak of SiH2 bond at a wave number of 2090 cm?1 and a stretching vibration peak of SiH bond at a wave number of 2000 cm?1. A ratio Z of an area of the stretching vibration peak of the SiH2 bond to an area of the stretching vibration peak of the SiH bond is in a range from 0.01 to 5.0. Within the above defined range, it indicates that the silicon matrix in the anode material mainly exists in the form of SiH bonds.

Abstract: The present disclosure provides an anode material and a lithium ion battery. The anode material comprises a composite, and the composite comprises a carbon matrix and an active material located in the carbon matrix, the active material comprises primary particles and/or agglomerates and aggregates, and a proportion of the aggregates in a total number of the primary particles, the agglomerates and the aggregates is smaller than or equal to 30%. According to the anode material and the lithium ion battery provided by the present disclosure, the volume expansion of the anode material can be reduced, and the rate performance and the cycle stability of the anode material are improved.

Abstract: An anode material, a preparation method thereof, and a lithium ion battery provided. The anode material includes a core and a coating layer arranged on at least part of a surface of the core, where the core includes porous carbon and active material filling in pore structure of the porous carbon, the porous carbon has a first pore structure with a pore size less than or equal to 2 nm and a second pore structure with a pore size greater than 2 nm, a ratio of a pore volume of the first pore structure to a total pore volume of the porous carbon is greater than or equal to 40%, and the second pore structure has a filling ratio greater than or equal to 95%. The anode material can effectively inhibit volume expansion and have advantages of high rate performance, a high capacity, and good cycling performance.

Abstract: The present disclosure provides an anode material and a preparation method therefor, and a battery. The anode material includes a first silicon material layer, and a buffer layer, a second silicon material layer, and a coating layer, which are sequentially arranged on a surface of the first silicon material layer. The density of the first silicon material layer is less than the density of the second silicon material layer. The anode material of the present disclosure has controllable volume expansion, a stable electrolyte solution interface, and high reversible capacity.

Abstract: An anode material, a preparation method thereof, and a secondary battery provided. The anode material includes a secondary particle, the secondary particle includes aggregated primary particles, and the primary particle and the secondary particle satisfy following relationships: 10?D250/D1max?40 (I), D2min/D250?0.08 (II) and D250/D2max?0.24 (III), in Formulas (I), (II) and (III), D1max represents a maximum particle size of the primary particle, D250 represents a median particle size of the secondary particle, D2min represents a minimum particle size of the secondary particle, and D2max represents a maximum particle size of the secondary particle. By defining particle size relationship between the primary particle and the secondary particle, and particle size distribution of the secondary particle, the primary particle and the secondary particle have a good matching degree, which improve cycling stability of the anode material and at the same time reduce volume expansion effect of the anode material.

Abstract: The present application relates to the field of anode material, providing an anode material and a preparation method thereof, and a lithium ion battery, where the anode material, includes an aggregate, the aggregate includes an active material, a carbon material, and a conductive enhancer; where the conductive enhancer has a tensile strength of ?500 MPa, and a dispersibility N in the anode material of ?1. The node material can be effectively suppressed, improving cell cycle performance.

Abstract: The present disclosure relates to an anode material, a method for preparing the same, and a lithium ion battery, which belong to the technical field of energy storage materials. The anode material includes a LixMySiO4 material, a carbon material and nano-silicon. The LixMySiO4 material and the carbon material has a network structure, independently forming a first skeleton and a second skeleton in the anode material respectively. The first skeleton and the second skeleton are entangled with each other, and the nano-silicon is distributed in the matrix or/and on the surface of LixMySiO4 material. In the LixMySiO4 material, the values of x and y satisfy charge balance, and M includes a metal element capable of reducing silicon oxides, the metal element excludes Li. The anode material has better electrical conductivity, more stable structure, lower volume expansion, higher electrical conductivity, higher first efficiency and excellent rate performance.

Abstract: The present application relates to a field of anode material, and a silicon carbon composite anode material and preparation method thereof, and a lithium ion battery provided. The silicon carbon composite anode material includes a silicon-based active particle, a conductive material, and a carbon coating layer, where the carbon coating layer is present on surface of the silicon-based active particle and/or the conductive material; and a semi-width of an X-ray diffraction angle (2?) of the silicon-based active particle on a crystal face (111) is greater than or equal to 0.5 degree when X-ray diffraction of the silicon-based active particle is tested with CuK? ray. The silicon carbon composite anode material and preparation method thereof, and a lithium ion battery can effectively inhibit volume expansion of anode material and improve cycle performance of battery.

Abstract: Providing an anode material and a preparation method thereof, lithium ion battery. The anode material includes an aggregate, the aggregate includes an active material, a carbon material, and a dopant element, where the carbon material is shown in a Raman spectrum obtained by Raman spectroscopy using a measurement light source having a wavelength of 532 nm that a G band is observed at 1530 cm?1 to 1630 cm?1, and a D band is observed at 1280 cm?1 to 1380 cm?1, and a ratio ID/IG of between peak intensity ID of the D band and peak intensity IG of the G band is 1 to 2.5. The anode material of the present application may significantly enhance the initial efficiency of composite material, and cycle performance and stability are also greatly improved.

Abstract: Disclosed is a composite silicon negative electrode material. The composite silicon negative electrode material comprises a nano silicon (1), a nano composite layer (5) coated on the surface of the nano silicon, and a conductive carbon layer (4) uniformly coated outside the nano composite layer (5). The nano composite layer (5) is a silicon oxide (2) and a metal alloy (3).

Abstract: A carbon matrix composite material, a preparation method therefor and a battery comprising the same. The carbon matrix composite material comprises micron-sized soft carbon, micron-sized hard carbon, a nano-active material, a first carbon coating layer and a second carbon coating layer, wherein the first carbon coating layer is coated on a surface of the nano-active material to form composite particles; the composite particles are dispersed on the surfaces of the soft carbon and the hard carbon, and in the second carbon coating layer; and the second carbon coating layer coats soft carbon, the hard carbon and the composite particles.

Abstract: The present disclosure relates to the field of negative electrode materials, and provide a negative electrode material, preparation method thereof, and a lithium ion battery, wherein the negative electrode material includes an aggregate, the aggregate includes an active material and a carbon material; wherein the aggregate has a porosity of ?10%, and the aggregate has a compressive hardness of ?100 Mpa. The negative electrode material provided by the present disclosure is effective in inhibiting the volume expansion of negative electrode material and improving the cycle performance of a battery.

Abstract: The present disclosure relates to the field of negative electrode materials, and provides a negative electrode material and a preparation method therefor, and a lithium ion battery. The negative electrode material comprises an aggregate, the aggregate comprising an active substance and a carbon material. The mass percentage of the active substance in the aggregate gradually decreases from the center to the surface of the aggregate. The negative electrode material provided by the present disclosure can effectively suppress volume expansion of the negative electrode material and improve battery cycle performance.