All-solid-state batteries

JP7863425B2Active Publication Date: 2026-05-21NISSAN MOTOR CO LTD +1
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
NISSAN MOTOR CO LTD
Filing Date
2022-02-16
Publication Date
2026-05-21

AI Technical Summary

Technical Problem

All-solid-state batteries face issues with end short circuits due to dendrite growth at the outer peripheral ends, which conventional carbon-containing layers fail to adequately prevent.

Method used

Incorporating a metal portion capable of alloying with lithium at the outer peripheral edge of the negative electrode active material layer in the all-solid-state battery.

Benefits of technology

This configuration effectively suppresses short circuits at the battery's outer ends by maintaining lithium conductivity and preventing dendrite formation.

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Patent Text Reader

Abstract

To provide an all-solid battery in which short-circuiting at an outer peripheral end portion is suppressed.SOLUTION: An all-solid battery is provided, comprising: a positive electrode active material layer 15; a negative electrode active material layer 13; a solid electrolyte layer 17 interposed between the positive electrode active material layer 15 and the negative electrode active material layer 13, and including a solid electrolyte; a carbon-containing layer 12 arranged between the negative electrode active material layer 13 and the solid electrolyte layer 17, and including carbon material; and a metal portion 14 which is provided at an outer peripheral edge portion of the negative electrode active material layer and can be alloyed with lithium.SELECTED DRAWING: Figure 7
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