Alkaline storage battery

By configuring hydrophobic carbon fibers on the surface layer of the negative electrode side of the spacer in an alkaline battery, the problems of insufficient reliability and low output at low temperatures in alkaline batteries in harsh environments are solved, achieving high output, low internal pressure and long life.

CN122249916APending Publication Date: 2026-06-19PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
Filing Date
2024-11-05
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing alkaline batteries lack reliability in harsh environments, have low output at low temperatures, are prone to internal pressure rise during overcharging, and have complex manufacturing processes.

Method used

Hydrophobic carbon fibers are disposed on the surface layer of the negative electrode side of the spacer to improve the conductivity and air permeability between the negative electrode and the spacer, reduce the amount of carbon fiber shedding, and ensure high output and high cycle characteristics.

Benefits of technology

It achieves high output at low temperatures, suppresses the rise in internal battery pressure during overcharging, improves the reliability and cycle life of alkaline batteries, and simplifies the production process.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention provides an alkaline battery with excellent reliability. The alkaline battery of this invention includes a positive electrode, a negative electrode, a spacer between the positive and negative electrodes, and an alkaline electrolyte. The negative electrode comprises a hydrogen storage alloy capable of electrochemically absorbing and releasing hydrogen. The surface layer of the spacer on the side opposite the negative electrode comprises hydrophobic carbon fibers.
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