Solid-state lithium ion polymer battery and preparation method thereof

• Main Authors: ZHAN SHIYING, ZHANG ZHENG, LI HAIJUN, SHANG YONGLIANG, HU HAILING, DENG SAIJUN
• Format: Patent
• Language: Chinese; English
• Published: 14.01.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention provides a solid-state lithium ion polymer battery and a preparation method thereof. The preparation method comprises the following steps: S1, preparing solid electrolyte colloid; s2, arranging the solid electrolyte colloid on the two surfaces of the positive plate and the negative plate in a silk-screen printing manner to obtain a positive electrolyte complex and a negative electrolyte complex; and S3, laminating the positive electrode electrolyte complex, the porous diaphragm and the negative electrode electrolyte complex, and performing lamination drying to obtain the solid-state lithium ion polymer battery. The colloidal solid electrolyte colloid is directly arranged on the positive plate and the negative plate through silk-screen printing, so that the solid electrolyte is in solid-liquid contact with the electrode, the contact interface resistance is reduced, and the contact effect of the interface is improved; and by utilizing lamination drying, the interface contact effect in the electrol