Positive electrode conductive filler, solid-state battery positive electrode, solid-state battery and preparation method of solid-state battery

• Main Authors: AN XUFEI, KANG FEIYU, ZHANG DANFENG, HE YANBING, LIU YANG, MA JIABIN, MI JINSHUO, LIU MING, CHENG XING, YANG KE
• Format: Patent
• Language: Chinese; English
• Published: 05.09.2023
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOUNDS THEREOF; ELECTRICITY; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention discloses a positive conductive filler, which comprises a Li < 1.4 > Al < 0.4 > Ti < 1.6 > (PO4) 3 nanowire (C (at) LATP) with a fast ion conductor structure, and the surface of the nanowire is coated with a conductive carbon layer. The solid-state battery positive electrode comprises a positive electrode binder, an active substance, a conductive agent and the positive electrode conductive filler. A solid-state battery includes a solid-state battery positive electrode, a solid-state electrolyte, and a negative electrode. The invention also discloses a method for preparing the positive conductive filler and a method for preparing the solid-state battery. When the composite material is used as a positive electrode conductive filler of a solid-state battery positive electrode, a continuous, efficient and stable ion-electron double-conductive network can be constructed in the solid-state battery positive electrode, slow ion and electron transmission kinetics in the solid-state battery positive elect