Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
NEGATIVE ELECTRODE ACTIVE MATERIAL, PREPARATION METHOD THEREFOR, AND DEVICE COMPRISING NEGATIVE ELECTRODE ACTIVE MATERIAL
The present application provides a negative electrode active material, a method preparing the same, and a device comprising the same. The negative electrode active material includes a carbon-silicon composite, which includes carbon-based particles and silicon nanoparticles, wherein the carbon-based particles have a carbon skeleton; the silicon nanoparticles attach to the carbon skeleton of carbon-based particles, and in the peripheral area of the carbon-silicon composite, the mass percentage content of carbon element A1 and silicon element B 1 satisfy 0.8 ≤ B1/A1 ≤ 2.5. When the negative electrode active material of the present application is applied to a secondary battery, during the cycling process of the secondary battery, the carbon-based particles can significantly limit the volume expansion of silicon nanoparticles, so as to improve the structural stability of the negative electrode active material and improve the cycling performance of the secondary battery.
NEGATIVE ELECTRODE ACTIVE MATERIAL, PREPARATION METHOD THEREFOR, AND DEVICE COMPRISING NEGATIVE ELECTRODE ACTIVE MATERIAL
The present application provides a negative electrode active material, a method preparing the same, and a device comprising the same. The negative electrode active material includes a carbon-silicon composite, which includes carbon-based particles and silicon nanoparticles, wherein the carbon-based particles have a carbon skeleton; the silicon nanoparticles attach to the carbon skeleton of carbon-based particles, and in the peripheral area of the carbon-silicon composite, the mass percentage content of carbon element A1 and silicon element B 1 satisfy 0.8 ≤ B1/A1 ≤ 2.5. When the negative electrode active material of the present application is applied to a secondary battery, during the cycling process of the secondary battery, the carbon-based particles can significantly limit the volume expansion of silicon nanoparticles, so as to improve the structural stability of the negative electrode active material and improve the cycling performance of the secondary battery.
NEGATIVE ELECTRODE ACTIVE MATERIAL, PREPARATION METHOD THEREFOR, AND DEVICE COMPRISING NEGATIVE ELECTRODE ACTIVE MATERIAL
NEGATIVELEKTRODENAKTIVMATERIAL, VERFAHREN ZUR HERSTELLUNG DAVON UND VORRICHTUNG DAMIT
MATÉRIAU ACTIF D'ÉLECTRODE NÉGATIVE, SON PROCÉDÉ DE PRÉPARATION ET DISPOSITIF COMPRENANT UN MATÉRIAU ACTIF D'ÉLECTRODE NÉGATIVE
DENG JINGXIAN (Autor:in) / WANG JIAZHENG (Autor:in)
25.12.2024
Patent
Elektronische Ressource
Englisch
IPC:
H01M
Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie
,
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
/
C01B
NON-METALLIC ELEMENTS
,
Nichtmetallische Elemente
/
C04B
Kalk
,
LIME
/
C22C
Legierungen
,
ALLOYS
/
C23C
Beschichten metallischer Werkstoffe
,
COATING METALLIC MATERIAL
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