POSITIVE ELECTRODE, NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND METHOD FOR MANUFACTURING POSITIVE ELECTRODE
To suppress heat generation when a short circuit is caused by an impact from outside a battery or the like.SOLUTION: A positive electrode comprises at least a positive electrode current collector 110, a conductive material 12 and a positive electrode active material 10. The positive electrode active...
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Language | English Japanese |
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12.09.2019
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Abstract | To suppress heat generation when a short circuit is caused by an impact from outside a battery or the like.SOLUTION: A positive electrode comprises at least a positive electrode current collector 110, a conductive material 12 and a positive electrode active material 10. The positive electrode active material 10 is disposed on a surface of the positive electrode current collector 110. The positive electrode current collector 110 includes a piece of aluminum foil 111 and an aluminum hydrous oxide film 112. The aluminum hydrous oxide film 112 covers a surface of the piece of aluminum foil. The aluminum hydrous oxide film 112 has a thickness of 10 nm or more and 500 nm or less. The aluminum hydrous oxide film 112 has a porosity of 10% or more and 50% or less. The conductive material 12 is at least partially disposed in cavities in the aluminum hydrous oxide film 112.SELECTED DRAWING: Figure 2
【課題】電池外部からの衝撃等により短絡が生じた場合に発熱を抑制すること。【解決手段】正極は正極集電体110、導電材12および正極活物質10を少なくとも含む。正極活物質10は正極集電体110の表面に配置されている。正極集電体110はアルミニウム箔111およびアルミニウム水和酸化物膜112を含む。アルミニウム水和酸化物膜112はアルミニウム箔の表面を被覆している。アルミニウム水和酸化物膜112は10nm以上500nm以下の厚さを有する。アルミニウム水和酸化物膜112は10%以上50%以下の空隙率を有する。かつ導電材12の少なくとも一部はアルミニウム水和酸化物膜112内の空隙に配置されている。【選択図】図2 |
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AbstractList | To suppress heat generation when a short circuit is caused by an impact from outside a battery or the like.SOLUTION: A positive electrode comprises at least a positive electrode current collector 110, a conductive material 12 and a positive electrode active material 10. The positive electrode active material 10 is disposed on a surface of the positive electrode current collector 110. The positive electrode current collector 110 includes a piece of aluminum foil 111 and an aluminum hydrous oxide film 112. The aluminum hydrous oxide film 112 covers a surface of the piece of aluminum foil. The aluminum hydrous oxide film 112 has a thickness of 10 nm or more and 500 nm or less. The aluminum hydrous oxide film 112 has a porosity of 10% or more and 50% or less. The conductive material 12 is at least partially disposed in cavities in the aluminum hydrous oxide film 112.SELECTED DRAWING: Figure 2
【課題】電池外部からの衝撃等により短絡が生じた場合に発熱を抑制すること。【解決手段】正極は正極集電体110、導電材12および正極活物質10を少なくとも含む。正極活物質10は正極集電体110の表面に配置されている。正極集電体110はアルミニウム箔111およびアルミニウム水和酸化物膜112を含む。アルミニウム水和酸化物膜112はアルミニウム箔の表面を被覆している。アルミニウム水和酸化物膜112は10nm以上500nm以下の厚さを有する。アルミニウム水和酸化物膜112は10%以上50%以下の空隙率を有する。かつ導電材12の少なくとも一部はアルミニウム水和酸化物膜112内の空隙に配置されている。【選択図】図2 |
Author | FUKUMOTO YUSUKE ASARI TAKUYA HETA KOJI OCHIAI AKIHIRO SHIMAMURA HARUNARI |
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DocumentTitleAlternate | 正極、非水電解質二次電池、および正極の製造方法 |
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Snippet | To suppress heat generation when a short circuit is caused by an impact from outside a battery or the like.SOLUTION: A positive electrode comprises at least a... |
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SubjectTerms | BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY |
Title | POSITIVE ELECTRODE, NONAQUEOUS ELECTROLYTE SECONDARY BATTERY, AND METHOD FOR MANUFACTURING POSITIVE ELECTRODE |
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