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Применить Всего найдено 2. Отображено 2.
09-05-2023 дата публикации

Negative electrode slurry and preparation method thereof, negative electrode and lithium battery

Номер: CN116093323A
Автор: WANG KAI, MA HONGYUN, ZHEN HUIJUAN, CHEN CHAO
Принадлежит:

The invention belongs to the field of lithium batteries, and particularly relates to negative electrode slurry, a preparation method, a negative electrode and a lithium battery. The negative electrode slurry comprises a negative electrode slurry main body, and the negative electrode slurry main body comprises the following components in parts by mass: 85-98 parts of an active material, 0.5-6 parts of a conductive agent and 1.5-9 parts of a binder. According to the invention, the binding power of the pole piece is increased and the processing performance of the pole piece in the coating process is improved by adding the accelerating agent into the negative electrode slurry and adopting the mixed glue system, and meanwhile, a novel coating process is adopted, so that the lower side and the negative electrode current collector have high binding power, and the conductivity of the negative electrode active material on the upper side is better, thereby improving the capacity and cycle performance ...

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Номер записи: 1
11-08-2023 дата публикации

Pre-lithiated negative plate, lithium ion battery and preparation method of pre-lithiated negative plate

Номер: CN116581252A
Автор: LIU ZHIBO, ZHEN HUIJUAN, MA HONGYUN, ZHANG JIAMING, MENG QINGYU
Принадлежит:

The invention belongs to the field of lithium ion batteries, and particularly relates to a pre-lithiation negative plate, a lithium ion battery and a preparation method. Comprising the following steps: dispersing a negative electrode active material, a conductive agent and a binder in a solvent to obtain negative electrode slurry; coating the obtained negative electrode slurry on a negative electrode current collector, drying and rolling to obtain a rolled negative electrode plate; and rolling the rolled negative electrode plate, the ultrathin lithium film and the heat conduction material again to obtain the pre-lithiated negative electrode. According to the technical scheme, the surface of the ultrathin lithium film is covered with the heat conduction material, a large amount of heat dissipated in the pre-lithiation process can be effectively absorbed, the pre-lithiation effect can be remarkably improved, the activity of the lithium film is guaranteed, the first effect and the energy density ...

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Номер записи: 2