Organosilicon polymer, solid electrolyte and solid-state lithium-ion battery

摘要

The present disclosure discloses an organosilicon polymer, a solid electrolyte comprising the organosilicon polymer, and a corresponding solid-state lithium-ion battery. The organosilicon polymer of the present disclosure is a polymer compound comprising both an inorganic backbone-chain structure and an organic side-chain structure, and has the characteristics of both the organic polymer and the inorganic polymer as well as many unique properties. Therefore, the solid electrolyte formed by the organosilicon polymer and the solid-state lithium-ion battery thereof have many good characteristics including a good lithium-ion-conduction capability, better resistance to high temperatures, a wider range of operating temperatures, and better thermal stability.

主权项

1. A preparation method of an organosilicon polymer for a solid electrolyte, wherein the organosilicon polymer comprising at least one structure unit as shown by Formula 1 or Formula 2: wherein R1 and R2 represent substituting groups which are respectively independently selected from alkyl, alkoxy, a polyether group and a terminal group with a —YA structure, at least one of the substituting groups R1 and R2 is the terminal group with the —YA structure, Rx represents alkyl or aryl, n is an integer greater than 1, and in the terminal group with the —YA structure, Y represents an anion and A represents a cation; wherein the organosilicon polymer is prepared through a reaction of a silicon-containing polymeric monomer B, a polymeric monomer C and an alkoxide in a solvent.