LITHIUM-ION BATTERY AND ELECTRONIC DEVICE

A lithium-ion battery (1) and an electronic device (10). The lithium-ion battery (1) comprises a negative electrode, a positive electrode, a separator, and an electrolyte. The positive electrode comprises a positive electrode active material. The separator is disposed between the negative electrode...

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Bibliographische Detailangaben
Hauptverfasser:	HAO, Jingmin, TANG, Chao, WANG, Xiang, XIN, Lijun
Format:	Patent
Sprache:	chi ; eng ; fre
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	A lithium-ion battery (1) and an electronic device (10). The lithium-ion battery (1) comprises a negative electrode, a positive electrode, a separator, and an electrolyte. The positive electrode comprises a positive electrode active material. The separator is disposed between the negative electrode and the positive electrode. The electrolyte comprises cyclic sulfonate, the cyclic sulfonate comprises 1,3-propane sultone and a compound shown in formula (I) other than 1,3-propane sultone, the content of the compound shown in formula (I) is A2% based on the mass n of the electrolyte, and the value range of A2 is 0.5-5. The provided electrolyte comprises 1,3-propane sultone and the compound shown in formula (I), and the mass A2 of the compound shown in formula (I) satisfies 0.5%≤A2/n≤5%. 1,3-propane sultone and the compound shown in formula (I) can play a synergistic role, and a compact CEI film layer can be formed on the surface of the positive electrode active material, thereby improving the protection effect on