A solid-state battery electrolyte spraying process and apparatus
CN122091476APending Publication Date: 2026-05-26SHENZHEN BONUOMA MARKS TECH CO LTD
Patent Information
- Application Number
- CN202610420949.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2025-12-22
- Filing Date
- 2026-04-01
- Publication Date
- 2026-05-26
AI Technical Summary
Technical Problem
In existing technologies, sulfide solid-state battery electrolytes are prone to generating harmful hydrogen sulfide gas during the spraying process, which affects production safety and product quality.
Method used
A low-viscosity slurry spraying process is adopted, which uses inert solvents to prepare low-viscosity slurry and applies it to the substrate through non-contact spraying. Combined with piezoelectric valves, the diameter and thickness of the spray points are precisely controlled, and inert gas is used to protect the drying process.
Benefits of technology
It effectively avoids the generation of hydrogen sulfide gas, ensures production safety, improves coating uniformity and battery performance, and reduces interface impedance.
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Smart Images
Figure CN122091476A_ABST
Abstract
This invention discloses a solid-state battery electrolyte spraying process and apparatus. The solid-state battery electrolyte spraying process includes the following steps: S1, preparing a slurry by dispersing active materials and conductive agents in an inert solvent to prepare a low-viscosity slurry, wherein the viscosity of the low-viscosity slurry is less than 20 mPa·s; S2, coating by spraying the low-viscosity slurry onto a substrate using a non-contact spraying method; S3, drying. The spraying apparatus includes a nozzle housing and a drying chamber, with the nozzle housing located on the material receiving side of the drying chamber; the nozzle housing is equipped with multiple nozzles for spraying the slurry onto the substrate, and each nozzle is equipped with a control component for controlling the amount of slurry sprayed per cycle. The low-viscosity slurry is sprayed out using a non-contact spraying method to achieve the effect of coating on the substrate. The use of an inert organic solvent to prepare the low-viscosity sulfide electrolyte isolates water and oxygen, ensuring that the spraying process does not generate hydrogen sulfide gas. Furthermore, it allows for precise control of the mass per unit area of the sprayed thickness.
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Citation Information
Patent Citations
Pole piece, preparation method thereof and solid-state battery
CN117012891A