Electrochemical and electronic devices including protective layers - Patents.com

JP2025510735APending Publication Date: 2025-04-15NINGDE AMPEREX TECHNOLOGY LTD
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Patent Information

Application Number
JP2024556174
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2022-03-30
Publication Date
2025-04-15

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Abstract

An electrochemical device capable of suppressing the occurrence of a short circuit between a positive electrode current collector and a negative electrode active material layer. The present invention relates to an electrochemical device including a positive electrode comprising a positive electrode current collector, a first protective layer, and a first positive electrode active material layer. The positive electrode current collector includes a first surface and a second surface opposite to the first surface, and the first protective layer is provided between the first surface and the first positive electrode active material layer. Here, the first surface includes a first region and a second region, the first region is provided with the first positive electrode active material layer, and the second region is not provided with the first positive electrode active material layer. The area of ​​the first region is defined as A1 cm. 2 The area of ​​the second region is A2 cm 2 The area of ​​the first protective layer is A3 cm 2 Then, A1, A2, and A3 satisfy 0.5≦A3 / (A1+A2)≦1.
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Citation Information

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