Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a lithium battery negative electrode material and a preparation method thereof. The lithium battery negative electrode material is prepared from the following raw materials inparts by weight: 10-15 parts of lithium titanate powder, 20-30 parts of silicon dioxide aerogel, 10-15 parts of sulfur-doped graphene, 10-20 parts of carbon nanotubes, 20-30 parts of fluorine-siliconmodified acrylic emulsion and 3-7 parts of perfluoroalkyl acrylate copolymer emulsion. The silicon dioxide aerogel is adopted to wrap the lithium titanate, a three-dimensional carbon structure composed of sulfur-doped graphene and carbon nanotubes is attached to the surface of the silicon dioxide aerogel, rich channels are loaded inside, lithium ions are easy to migrate, shuttle, intercalate and deintercalate in the channels, and the charge-discharge specific capacity of the lithium ions is greatly improved; and meanwhile, the volume expansion of the negative electrode material can be effectively avoided by a large amount of internal space, and the introduction of the fluorine-silicon modified acrylic emulsion and the perfluoroalkyl acrylate copolymer emulsion can play a role in bufferingand adjusting the rapid intercalation and deintercalation of lithium ions, so that the service life of the negative electrode material is prolonged.
本发明公开了一种锂电池负极材料及其制备方法，由以下重量份的原料制备所得：钛酸锂粉末10‑15份、二氧化硅气凝胶20‑30份、硫掺杂石墨烯10‑15份、碳纳米管10‑20份、氟硅改性丙烯酸乳液20‑30份、全氟烷基丙烯酸酯共聚乳液3‑7份。本发明采用二氧化硅气凝胶将钛酸锂包裹，并在其表面附着由硫掺杂石墨烯、碳纳米管构成的三维碳结构，内载丰富的通道，易于锂离子在通道中迁移穿梭，嵌入与脱出，大大提高锂离子的充放电比容量，同时其内部大量的空间可以有效的避免负极材料的体积膨胀，而氟硅改性丙烯酸乳液、全氟烷基丙烯酸酯共聚乳液的引入可以对锂离子的快速嵌入和脱出起到缓冲调节作用，延长负极材料的使用寿命。
The invention discloses a lithium battery negative electrode material and a preparation method thereof. The lithium battery negative electrode material is prepared from the following raw materials inparts by weight: 10-15 parts of lithium titanate powder, 20-30 parts of silicon dioxide aerogel, 10-15 parts of sulfur-doped graphene, 10-20 parts of carbon nanotubes, 20-30 parts of fluorine-siliconmodified acrylic emulsion and 3-7 parts of perfluoroalkyl acrylate copolymer emulsion. The silicon dioxide aerogel is adopted to wrap the lithium titanate, a three-dimensional carbon structure composed of sulfur-doped graphene and carbon nanotubes is attached to the surface of the silicon dioxide aerogel, rich channels are loaded inside, lithium ions are easy to migrate, shuttle, intercalate and deintercalate in the channels, and the charge-discharge specific capacity of the lithium ions is greatly improved; and meanwhile, the volume expansion of the negative electrode material can be effectively avoided by a large amount of internal space, and the introduction of the fluorine-silicon modified acrylic emulsion and the perfluoroalkyl acrylate copolymer emulsion can play a role in bufferingand adjusting the rapid intercalation and deintercalation of lithium ions, so that the service life of the negative electrode material is prolonged.
本发明公开了一种锂电池负极材料及其制备方法，由以下重量份的原料制备所得：钛酸锂粉末10‑15份、二氧化硅气凝胶20‑30份、硫掺杂石墨烯10‑15份、碳纳米管10‑20份、氟硅改性丙烯酸乳液20‑30份、全氟烷基丙烯酸酯共聚乳液3‑7份。本发明采用二氧化硅气凝胶将钛酸锂包裹，并在其表面附着由硫掺杂石墨烯、碳纳米管构成的三维碳结构，内载丰富的通道，易于锂离子在通道中迁移穿梭，嵌入与脱出，大大提高锂离子的充放电比容量，同时其内部大量的空间可以有效的避免负极材料的体积膨胀，而氟硅改性丙烯酸乳液、全氟烷基丙烯酸酯共聚乳液的引入可以对锂离子的快速嵌入和脱出起到缓冲调节作用，延长负极材料的使用寿命。
Lithium battery negative electrode material and preparation method thereof
一种锂电池负极材料及其制备方法
GUO YAQIN (Autor:in)
19.03.2021
Patent
Elektronische Ressource
Chinesisch
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
/
B82Y
Bestimmter Gebrauch oder bestimmte Anwendung von Nanostrukturen
,
SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
/
C04B
Kalk
,
LIME
Lithium ion battery negative electrode material and preparation method thereof
| Europäisches Patentamt | 2020
| Europäisches Patentamt | 2020
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2021
| Europäisches Patentamt | 2021