METHOD FOR MANUFACTURING SLURRY FOR POSITIVE ELECTRODE OF SECONDARY BATTERY

To improve peel strength of a positive electrode active material layer manufactured by using slurry for a positive electrode of a secondary battery.SOLUTION: A method for manufacturing a slurry for a positive electrode of a secondary battery includes a step (I) and a step (II). The step (I) is a ste...

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Bibliographic Details
Main Author KANEDA JUN
Format Patent
LanguageEnglish
Japanese
Published 14.10.2022
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Summary:To improve peel strength of a positive electrode active material layer manufactured by using slurry for a positive electrode of a secondary battery.SOLUTION: A method for manufacturing a slurry for a positive electrode of a secondary battery includes a step (I) and a step (II). The step (I) is a step of preparing an intermediate slurry by mixing (A) an olivine-type positive electrode active material, (B) carboxyalkyl-group-containing cellulose ether, (C) carbon nanotubes, and (D) an aqueous solvent. The step (II) is a step of further adding (C) carbon nanotubes to the intermediate slurry and mixing them.SELECTED DRAWING: None 【課題】二次電池正極用スラリーを用いて製造される正極活物質層の剥離強度を向上させる。【解決手段】二次電池正極用スラリーの製造方法は、ステップ（Ｉ）とステップ（ＩＩ）とを含む。ステップ（Ｉ）は、（Ａ）オリビン型構造正極活物質、（Ｂ）カルボキシアルキル基含有セルロースエーテル、（Ｃ）カーボンナノチューブ、及び（Ｄ）水系溶媒を混合することにより中間スラリーを調製するステップである。ステップ（ＩＩ）は、中間スラリーに（Ｃ）カーボンナノチューブを更に加えて混合するステップである。【選択図】なし
Bibliography:Application Number: JP20210059395