Alkaline rechargeable batteries containing siloxane
JP2026096863APending Publication Date: 2026-06-15NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE & TECHNOLOGY
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE & TECHNOLOGY
- Filing Date
- 2024-12-03
- Publication Date
- 2026-06-15
AI Technical Summary
Technical Problem
The capacity retention rate of alkaline secondary batteries decreases with repeated charging and discharging when a silicon compound is added to the electrolyte.
Method used
Incorporating siloxane into the electrodes and electrolyte of alkaline secondary batteries, allowing it to undergo phase separation, thereby reducing the dissolution of siloxane into the electrolyte and preventing erosion of the electrode materials.
Benefits of technology
The inclusion of siloxane on the electrode surfaces or in the electrolyte suppresses the decrease in capacity retention rate, maintaining battery performance by preventing electrode erosion and side reactions.
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Smart Images
Figure 2026096863000001_ABST
Abstract
This invention provides an alkaline secondary battery that suppresses the decrease in capacity retention rate by using siloxane. [Solution] The alkaline secondary battery comprises a positive electrode having a positive electrode active material, a negative electrode having an alkali metal substrate, a separator and an electrolyte provided between the positive and negative electrodes. The positive electrode comprises a siloxane that covers a portion or more of the positive electrode active material and undergoes phase separation from the electrolyte. In addition to or in lieu of this, the negative electrode may comprise a siloxane that covers a portion or more of the alkali metal substrate and undergoes phase separation from the electrolyte. Furthermore, in addition to or in lieu of these, the electrolyte may contain a siloxane that undergoes phase separation in the electrolyte.
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