Non-aqueous lithium storage device

A technology for electric storage components and non-aqueous electrolytes, which can be applied to lithium batteries, electrical components, non-aqueous electrolyte batteries, etc., and can solve problems such as the safety risks of electric storage components
CN108475588BActive Publication Date: 2020-06-12ASAHI KASEI KK
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ASAHI KASEI KK
Publication Date
2020-06-12

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Abstract

An object of the present invention is to provide a non-aqueous lithium storage device capable of suppressing excessive decomposition of a lithium compound remaining in a positive electrode, suppressing gas generation at high voltage, and suppressing capacity reduction during high-load charge-discharge cycles. The non-aqueous lithium storage element of the present embodiment includes a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte solution, the positive electrode containing a lithium compound other than an active material, the non-aqueous electrolyte solution containing lithium ions, wherein the surface of the positive electrode passes through In the element distribution image obtained by SEM‑EDX, the area repetition rate U of the fluorine distribution image obtained by binarization based on the average value of the luminance value relative to the oxygen distribution image 1 40% or more and 99% or less.
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Description

【Technical field】

[0001] The invention relates to a non-aqueous lithium storage element. 【Background technique】

[0002] In recent years, in order to protect the global environment and save resources and effectively use energy, power stabilization systems for wind power generation or late-night power storage systems, distributed power storage systems for households based on solar power generation technology, and power storage systems for electric vehicles Power storage systems and the like are attracting attention.

[0003] The first requirement for batteries used in these power storage systems is high energy density. As a powerful supplement to high-energy-density batteries that can meet such demands, development of lithium-ion batteries has been actively promoted.

[0004] The second required item is high output characteristics. For example, in a combination of a high-efficiency engine and a power storage system (such as a hybrid electric vehicle), or a combination of a...

Claims

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