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

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...

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Hauptverfasser: WANG LIPING, HUANG ZONGLING, LI JINGZE, MOU CHENGXU
Format: Patent
Sprache:eng
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ACYCLIC OR CARBOCYCLIC COMPOUNDS
BASIC ELECTRIC ELEMENTS
CHEMISTRY
ELECTRICITY
METALLURGY
ORGANIC CHEMISTRY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator WANG LIPING
HUANG ZONGLING
LI JINGZE
MOU CHENGXU
description 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.
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subjects ACYCLIC OR CARBOCYCLIC COMPOUNDS
BASIC ELECTRIC ELEMENTS
CHEMISTRY
ELECTRICITY
METALLURGY
ORGANIC CHEMISTRY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title Preparation method of calcium terephthalate, and application of calcium terephthalate in lithium ion battery
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