Technology Innovation

All-Solid-State-Batteries are Still in Development Phase So far, only some China OEMs have publicly released their SOP plans for solid state batteries. Three of them choose sulfide electrolyte in their technology stack due to the technologyʼs ionic conductivity and manufacture feasibility. By now, sulfide-based battery have become the mainstream route worldwide, Japan, South Korea, Europe, the United States and China have increased their R&D investment in sulfides.

OEM

Solid State Battery Technology

SOP Plan

High Nickel cathode + Si/C anode + Polymer electrolyte

High Nickel cathode + Si/C anode + Sulfide/Halide electrolyte

High Nickel cathode + Si/C anode + Sulfide/Polymer electrolyte

High Nickel cathode + Si/C anode + Halide electrolyte

High Nickel cathode + Si/C anode + Sulfide electrolyte

Source: 2025第二届中国全固态电池创新发展高峰论坛

Reason 1 High ionic conductivity

Ionic conductivity: 32 mS/cm Ion transfer number: 1

Reason 2 Easy to manufacture

A continuous ion pathway can be formed in the composite electrode by cold pressing

A compact electrolyte film can be formed by cold pressing

Extracted from the PDF; charts and images may read imperfectly.