PROCESS FOR PREPARING COMPOSITE CATHODE FOR LITHIUM ION CELL

PROCESS FOR PREPARING COMPOSITE CATHODE FOR LITHIUM ION CELL

The present application provides a process for preparing a composite cathode for a lithium ion cell. The process comprises the steps of (i) forming a cathode slurry in a planetary mixing machine by mixing an active material, conducting diluent and binder; (ii) coating the slurry over an aluminum foi...

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Hauptverfasser: MERCY TD, BIBIN JOHN, S ARAVAMUTHAN
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 MERCY TD
BIBIN JOHN
S ARAVAMUTHAN
description The present application provides a process for preparing a composite cathode for a lithium ion cell. The process comprises the steps of (i) forming a cathode slurry in a planetary mixing machine by mixing an active material, conducting diluent and binder; (ii) coating the slurry over an aluminum foil substrate in a coating machine at a speed of 0.2-0.8 m/min; and (iii) calendering the cathode in a calendering machine at a temperature of 50-150 DEG C. The present invention also relates to a system for the process. The cathode has peel strength of greater than 200 gf/cm and moisture content less than 350 ppm. The lithium ion cell with the cathode disclosed in the invention and a graphite anode exhibits a capacity retention of >80% at 100% depth-of-discharge at C/2-1C charge-discharge rate when tested for 2000 cycles. 本申请提供了一种制备用于锂离子电池的复合正极的方法，包括以下步骤：(i)通过混合活性材料、导电稀释剂和粘合剂，在行星式混合机中形成正极浆料；(ii)在涂覆机中以0.2-0.8m/min的速度将浆料涂覆在铝箔基板上；(iii)在50-150℃温度下在压延机中压延正极。本申请还公开了一种用于此目的的系统。正极具有大于200gf/cm的剥离强度和小于350ppm的水分含量。具有本发明公开的正极和石
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The process comprises the steps of (i) forming a cathode slurry in a planetary mixing machine by mixing an active material, conducting diluent and binder; (ii) coating the slurry over an aluminum foil substrate in a coating machine at a speed of 0.2-0.8 m/min; and (iii) calendering the cathode in a calendering machine at a temperature of 50-150 DEG C. The present invention also relates to a system for the process. The cathode has peel strength of greater than 200 gf/cm and moisture content less than 350 ppm. The lithium ion cell with the cathode disclosed in the invention and a graphite anode exhibits a capacity retention of &gt;80% at 100% depth-of-discharge at C/2-1C charge-discharge rate when tested for 2000 cycles. 本申请提供了一种制备用于锂离子电池的复合正极的方法，包括以下步骤：(i)通过混合活性材料、导电稀释剂和粘合剂，在行星式混合机中形成正极浆料；(ii)在涂覆机中以0.2-0.8m/min的速度将浆料涂覆在铝箔基板上；(iii)在50-150℃温度下在压延机中压延正极。本申请还公开了一种用于此目的的系统。正极具有大于200gf/cm的剥离强度和小于350ppm的水分含量。具有本发明公开的正极和石</description><language>chi ; eng</language><subject>BASIC ELECTRIC ELEMENTS ; ELECTRICITY ; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY</subject><creationdate>2021</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20211029&amp;DB=EPODOC&amp;CC=CN&amp;NR=113574711A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,309,781,886,25569,76552</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20211029&amp;DB=EPODOC&amp;CC=CN&amp;NR=113574711A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MERCY TD</creatorcontrib><creatorcontrib>BIBIN JOHN</creatorcontrib><creatorcontrib>S ARAVAMUTHAN</creatorcontrib><title>PROCESS FOR PREPARING COMPOSITE CATHODE FOR LITHIUM ION CELL</title><description>The present application provides a process for preparing a composite cathode for a lithium ion cell. 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subjects BASIC ELECTRIC ELEMENTS
ELECTRICITY
PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
title PROCESS FOR PREPARING COMPOSITE CATHODE FOR LITHIUM ION CELL
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