Preparation method of calcium terephthalate, and application of calcium terephthalate in lithium ion battery

The invention provides a preparation method of an organic negative material calcium terephthalate, and an application of the organic negative material calcium terephthalate in a lithium ion battery. The preparation method of calcium terephthalate comprises the following steps: 1, reacting terephthal...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: WANG LIPING, HUANG ZONGLING, LI JINGZE, MOU CHENGXU
Format: Patent
Sprache:eng
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The invention provides a preparation method of an organic negative material calcium terephthalate, and an application of the organic negative material calcium terephthalate in a lithium ion battery. The preparation method of calcium terephthalate comprises the following steps: 1, reacting terephthalic acid with LiOH or NaOH or KOH to obtain a terephthalate solution; 2, reacting the terephthalate salt solution with CaCl2 or Ca (NO3)2 to obtain a mixed solution containing calcium terephthalate; 3, separating the mixed solution, and drying the solid obtained separation to obtain calcium terephthalate trihydrate; and 4, drying the calcium terephthalate trihydrate in a vacuum drying box to remove crystal water in order to obtain calcium terephthalate. The calcium terephthalate has a reversible capacity of 231mAh/g, has the advantages of excellent stability in an electrolyte, good rate capability, slow specific capacity attenuation, and maintenance of high capacity of 93% after cycling for 120 weeks, and is a lithium ion battery organic negative material with excellent performances.