All-Solid Secondary Battery Patent Application

ChangeBridge: Patent Apps - Batteries (H01M)

Published March 26th, 2026

Detected March 27th, 2026

Summary

The USPTO has published a new patent application, US20260088414A1, for an all-solid secondary battery and a method of preparing the same. The application details a unit cell with specific electrode and electrolyte layers, and a compression assistance layer designed to withstand buckling deformation.

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What changed

This document is a publication of a patent application (US20260088414A1) filed by Dongil Kang and Wonsung Choi with the USPTO. The application describes an all-solid secondary battery featuring a unit cell with cathode, anode, and solid electrolyte layers, enclosed by an exterior material. A key innovation highlighted is a compression assistance layer on the unit cell, designed to have a buckling deformation point of 100 megapascals or more.

As this is a patent application, it does not impose direct regulatory obligations or compliance deadlines on entities. However, it signifies potential future technological advancements in battery technology. Companies involved in battery manufacturing, materials science, or energy storage may wish to review this application for insights into emerging intellectual property and potential competitive landscapes in the field.

Source document (simplified)

← USPTO Patent Applications

ALL-SOLID SECONDARY BATTERY AND METHOD OF PREPARING THE SAME

Application US20260088414A1 Kind: A1 Mar 26, 2026

Inventors

Dongil Kang, Wonsung Choi

Abstract

An all-solid secondary battery and a method of preparing the same, the all-solid secondary battery including a unit cell and a compression assistance layer on at least one surface of the unit cell, the unit cell including an electrode assembly and an exterior material on the electrode assembly, the electrode assembly including a cathode layer, an anode layer, and a solid electrolyte layer between the cathode layer and the anode layer, wherein a buckling deformation point of the compression assistance layer is 100 megaPascals or more.