NEGATIVE ELECTRODE PLATE, PREPARATION METHOD THEREFOR, SECONDARY BATTERY CONTAINING SAME, BATTERY MODULE, BATTERY PACK, AND ELECTRICAL DEVICE

This application provides a negative electrode plate including a current collector and a negative electrode film layer disposed on at least one surface of the current collector, where the negative electrode film layer includes a negative electrode active material and an emulsion-type binder, and at...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	ZHANG, Tongxian, ZHANG, Ming
Format:	Patent
Sprache:	eng ; fre ; ger
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:	This application provides a negative electrode plate including a current collector and a negative electrode film layer disposed on at least one surface of the current collector, where the negative electrode film layer includes a negative electrode active material and an emulsion-type binder, and at least a portion of the emulsion-type binder is in irregular film-like distribution on surface of the negative electrode active material. The negative electrode plate has significantly improved cohesion and adhesion, and the problems of reducing the passing rate of the electrode plate, such as active material powder dropping, negative electrode film layer cracking, and negative electrode film layer falling off, are significantly alleviated. The cycling performance of the secondary battery containing the negative electrode plate of the present invention is significantly improved. This application also provides a preparation method of negative electrode plate, and a secondary battery, a battery module, a battery pack, and an electric apparatus containing such negative electrode plate.