On November 19, Gelonghui reported that Ningbo Solartron Technology (688299.SH) announced that, based on the principles of resource sharing, complementary advantages, mutual benefit, and common development, the company recently signed a "Technology Development Contract" with the Institute of Physics, Chinese Academy of Sciences (referred to as "Institute of Physics" or "Party B"), and both parties have signed a technology development contract for jointly participating in the development of solid state battery composite membranes.
The Institute of Physics has deeply engaged in various research fields and achieved multiple internationally influential important scientific research results. In applied basic research, it has created a new world record of 14.9% certified efficiency for CZTSSe solar cells; developed high energy density lithium batteries (711Wh/kg); and achieved mass production of sodium batteries and solid state lithium batteries, among other accomplishments. The Institute of Physics actively targets national strategy and industrial demand, breaking barriers in key materials and technology applications to provide a technological source guarantee for national security and sustainable development.
The porous base membrane materials developed in this project have universality in traditional liquid batteries, semi-solid batteries, and all-solid batteries. The porous base membrane material acts as a separator in the liquid battery system, serving as an ionic transport bridge; the composite ionic conduction membrane made using dense filling technology of the base membrane performs the function of solid electrolyte in the solid state battery system. By adjusting the composition of the composite fillers, the composite ionic conduction membrane produced by this project can be matched with high energy density anode materials primarily composed of graphite anodes, silicon-carbon composite anodes, composite metal lithium anodes, and high voltage and high capacity cathode materials such as lithium iron phosphate, lithium cobalt oxide, ternary materials, and lithium-rich materials. In the above applications, high-performance base membrane ontology materials will mainly be produced using dry/wet stretching processes, electrospinning technology, laser perforation, and other techniques, researching the intrinsic properties of materials such as organic polymer materials, inorganic filler particles, lithium salts, etc., to create composite fillers with high ionic conductivity and oxidation resistance, exploring electrochemically stable and thermally safe monomer materials, optimizing initiators and initiation conditions to improve curing rates, forming a set of directional and controllable multifunctional composite membrane standard production processes, and achieving mass production.
