SECONDARY BATTERY

To improve the durability of a secondary battery using a silicon negative electrode active material.SOLUTION: A secondary battery 100 has a negative electrode 10, an electrolyte, and a positive electrode 30. The negative electrode 10 includes Si particles as a negative electrode active material. The...

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Bibliographische Detailangaben
Hauptverfasser:	YOSHIDA ATSUSHI, OTAKI MITSUTOSHI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	To improve the durability of a secondary battery using a silicon negative electrode active material.SOLUTION: A secondary battery 100 has a negative electrode 10, an electrolyte, and a positive electrode 30. The negative electrode 10 includes Si particles as a negative electrode active material. The Si particles have a clathrate structure. An average particle size of the Si particles is 0.7-8.9 μm.SELECTED DRAWING: Figure 1 【課題】シリコン負極活物質を用いた二次電池の耐久性を向上させる。【解決手段】負極１０と電解液と正極３０とを有し、前記負極１０が負極活物質としてのＳｉ粒子を含み、前記Ｓｉ粒子がクラスレート構造を有し、前記Ｓｉ粒子が０．７μｍ以上８．９μｍ以下の平均粒子径を有する、二次電池１００。【選択図】図１