国家/地区 中国（12）
IPC部 B（12）
IPC大类 B82（12） C01（12） H01（12）
C23（2）
IPC小类 B82Y（12）
IPC C01B033/02（12）
发明人
公开年 2021（8） 2022（4）
申请年 2021（12）
专利权人

Method for quickly preparing silicon nano-wire for lithium ion battery, involves dispersing dried cut waste silicon powder and graphene in solvent, filtering suspension, drying to obtain graphene film, and performing pre-reduction.

QIAN G, GONG X, LIU J, LU J, WANG Z

Active material used in negative electrode for lithium secondary battery, comprises pores having preset size, and silicon-based compound having preset ratio of peak intensity in region having specific wavelength in Raman spectrum.

PARK G O, YOO S K, CHUNG J H, ZHENG Z, YU S, PARK G

Preparing silicon-carbon composite material in electrochemical device, involves mixing silicon material, carbon material and adhesive agent to obtain intermediate A, subjecting obtained intermediate A to hot mixing kneading and isostatic pressing to obtain intermediate B.

LU C, ZHOU M, GU H, FENG S, LI X

Low-expansion silicon carbon cathode material for lithium ion battery, has core-shell structure, where core is nano silicon, middle layer is porous carbon material, and outermost layer is boron-doped graphene sponge.

FAN Z, TIAN T, PANG J, DU N, YANG D, LIANG Y

Porous silicon-carbon composite material for lithium ion battery, comprises core-shell structure, where inner core is composite of porous carbon, cerium dioxide and graphene component, and shell is doped with oxide compound selected from phosphorus oxide, arsenic oxide and selenium oxide.

CAO J

Silicon-carbon composite material used as cathode material for lithium ion battery, comprises three-core structure coating three-layer carbon shell on surface of nano-silicon surface.

PENG Y, CHEN Q, LIANG H, TANG X, CAI J

Preparation device of silicon-based electrode material, has granulation unit that includes granulation chamber, turntable arranged inside granulation chamber, and two material spray heads, and inlet provided above granulation chamber and above turntable.

XIAO X, ZUO X, WANG W, YANG T, CHEN J, MA Z, NAN J

Silicon carbon shell nano composite material used for forming lithium-ion battery electrode, comprises silicon carbon shell nanoparticles comprising shell structure, hollow structure comprising graphene material and filling particles comprising silicon nanomaterials.

WANG D

Preparing carbon-silicon three-dimensional structure composite material, involves dissolving graphene quantum dot in ultrapure water, dripping in copper(II) chloride or zinc chloride solution, mixing mixed emulsifier with e.g. graphite oxide aqueous solution and adding hydrazine hydrate to emulsion.

WU X, ZHANG E

Preparation of porous spherical graphene-coated silicon composite material used for forming negative electrode, involves ultrasonically-dispersing nanosilicon in graphene oxide aqueous dispersion, adding nitric acid solution, ultrasonically-mixing, hydrothermally-reacting, and calcining.

HE D, CHEN H