A lithium ion battery and a preparation method thereof

A lithium ion battery and a preparation method thereof

The invention discloses a lithium ion battery and a preparation method thereof. A positive electrode of the lithium ion battery adopts high pressure lithium cobaltate positive active materials, and anegative electrode of the lithium ion battery adopts mesophase carbon microsphere graphite as active...

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Hauptverfasser: HAN XIAOHUI, ZHANG PAN, SHI JIANZHI, LU GUOJIE, CAI SHOUKE, ZHU HUIFANG
Format: Patent
Sprache:chi ; eng
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BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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creator HAN XIAOHUI
ZHANG PAN
SHI JIANZHI
LU GUOJIE
CAI SHOUKE
ZHU HUIFANG
description The invention discloses a lithium ion battery and a preparation method thereof. A positive electrode of the lithium ion battery adopts high pressure lithium cobaltate positive active materials, and anegative electrode of the lithium ion battery adopts mesophase carbon microsphere graphite as active materials. The separator is composed of a base film layer formed by sequentially stacking three base films of PP, PE and PP and ceramic materials coated on the base film layer. In the above manner, the lithium ion battery of the present invention can effectively suppress the thermal runaway of thebattery caused by 10V overcharge in 1C charging of the battery at different ambient temperatures (such as 5 DEG C, 25 DEG C and 50 DEG), preventing the battery from igniting and explosion; and at thesame time the lithium ion battery can withstand heavy impact, thermal shock, short circuit, acupuncture, extrusion and other destructive collisions without ignition and explosion, and has high safetyperformance. 本发明公开了种锂离子电池及其制
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A positive electrode of the lithium ion battery adopts high pressure lithium cobaltate positive active materials, and anegative electrode of the lithium ion battery adopts mesophase carbon microsphere graphite as active materials. The separator is composed of a base film layer formed by sequentially stacking three base films of PP, PE and PP and ceramic materials coated on the base film layer. 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A positive electrode of the lithium ion battery adopts high pressure lithium cobaltate positive active materials, and anegative electrode of the lithium ion battery adopts mesophase carbon microsphere graphite as active materials. The separator is composed of a base film layer formed by sequentially stacking three base films of PP, PE and PP and ceramic materials coated on the base film layer. In the above manner, the lithium ion battery of the present invention can effectively suppress the thermal runaway of thebattery caused by 10V overcharge in 1C charging of the battery at different ambient temperatures (such as 5 DEG C, 25 DEG C and 50 DEG), preventing the battery from igniting and explosion; and at thesame time the lithium ion battery can withstand heavy impact, thermal shock, short circuit, acupuncture, extrusion and other destructive collisions without ignition and explosion, and has high safetyperformance. 本发明公开了种锂离子电池及其制</abstract><oa>free_for_read</oa></addata></record>
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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title A lithium ion battery and a preparation method thereof
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