Negative plate and battery

• Main Authors: YU KAIMING, JIN LINGLING, SHEN HONGGUANG, YU YINTAO
• Format: Patent
• Language: Chinese; English
• Published: 21.03.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The embodiment of the invention provides a negative electrode plate, which comprises a current collector, the surface of which is coated with a paste coating layer; the paste coating layer comprises a first paste coating layer, a second paste coating layer and a third paste coating layer which are sequentially stacked, and the first paste coating layer, the second paste coating layer and the third paste coating layer are different paste coating layers. According to the negative plate provided by the embodiment of the invention, the three different paste layers are arranged, so that a battery has a shorter lithium ion transmission path, polarization can be reduced, high-rate pulse discharge at a low temperature is facilitated, and the transmission efficiency of the battery is improved. 本发明实施例提供了一种负极片，所述负极片包括：集流体，所述集流体的表面涂布有涂膏层；所述涂膏层包括依次层叠设置的第一涂膏层、第二涂膏层和第三涂膏层，所述第一涂膏层、所述第二涂膏层和所述第三涂膏层分别为不同的涂膏层。本发明实施例提供的一种负极片，通过设置三层不同的涂膏层，使得电池有更短的锂离子传输路径，可以减小极化，更加有利于低温下的大倍率脉冲放电，提高了电池的传输效率。