ELECTROLYTE COMPOSITION, METHOD FOR SECONDARY ELECTROLYTE FILLING, AND LITHIUM SECONDARY BATTERY
The present application belongs to the technical field of lithium-ion batteries, and particularly relates to an electrolyte composition suitable for secondary electrolyte filling. The electrolyte composition comprises a first electrolyte and a second electrolyte, wherein the first electrolyte contai...
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creator | SUN, Wenpo YU, Chaochen ZHOU, Li LI, Shuailong XIE, Tian DING, Youting |
description | The present application belongs to the technical field of lithium-ion batteries, and particularly relates to an electrolyte composition suitable for secondary electrolyte filling. The electrolyte composition comprises a first electrolyte and a second electrolyte, wherein the first electrolyte contains 1-2.5 wt% of vinylene carbonate, 0.1-3 wt% of lithium bis(fluorosulfonyl)imide, 5-15 wt% of lithium hexafluorophosphate, 0.01-5 wt% of a positive electrode film-forming additive, 0.01-5 wt% of a negative electrode film-forming additive, and 1-10 wt% of a fluorine-containing solvent, with the balance being a non-aqueous organic solvent. In the present application, by controlling the amounts of VC and LIFSI in the first filling, the additional filling of a fluorine-containing solvent and the addition of a positive electrode film-forming additive, the problems of an excessively high initial DCR, an excessively fast cyclic DCR growth speed, obvious long-cycle attenuation and diving can be avoided. Another core innov |
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The electrolyte composition comprises a first electrolyte and a second electrolyte, wherein the first electrolyte contains 1-2.5 wt% of vinylene carbonate, 0.1-3 wt% of lithium bis(fluorosulfonyl)imide, 5-15 wt% of lithium hexafluorophosphate, 0.01-5 wt% of a positive electrode film-forming additive, 0.01-5 wt% of a negative electrode film-forming additive, and 1-10 wt% of a fluorine-containing solvent, with the balance being a non-aqueous organic solvent. In the present application, by controlling the amounts of VC and LIFSI in the first filling, the additional filling of a fluorine-containing solvent and the addition of a positive electrode film-forming additive, the problems of an excessively high initial DCR, an excessively fast cyclic DCR growth speed, obvious long-cycle attenuation and diving can be avoided. 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The electrolyte composition comprises a first electrolyte and a second electrolyte, wherein the first electrolyte contains 1-2.5 wt% of vinylene carbonate, 0.1-3 wt% of lithium bis(fluorosulfonyl)imide, 5-15 wt% of lithium hexafluorophosphate, 0.01-5 wt% of a positive electrode film-forming additive, 0.01-5 wt% of a negative electrode film-forming additive, and 1-10 wt% of a fluorine-containing solvent, with the balance being a non-aqueous organic solvent. In the present application, by controlling the amounts of VC and LIFSI in the first filling, the additional filling of a fluorine-containing solvent and the addition of a positive electrode film-forming additive, the problems of an excessively high initial DCR, an excessively fast cyclic DCR growth speed, obvious long-cycle attenuation and diving can be avoided. Another core innov</description><subject>BASIC ELECTRIC ELEMENTS</subject><subject>ELECTRICITY</subject><subject>PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2024</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNyrEKwjAQANAuDqL-w4FrhaZ2cYzpxR6kOUlPJFMtEifRQv1_XBw6Or3lLbMbOjQS2EVBMNyeuSMh9jm0KA3XYDlAh4Z9rUOE-bbkHPlTDtrX4EgaurSzetQiGOI6WzyG55Q2P1fZ1qKYZpfGd5-mcbinV_r0Vy6LslKqUodCq_1_6wuMDTSy</recordid><startdate>20240606</startdate><enddate>20240606</enddate><creator>SUN, Wenpo</creator><creator>YU, Chaochen</creator><creator>ZHOU, Li</creator><creator>LI, Shuailong</creator><creator>XIE, Tian</creator><creator>DING, Youting</creator><scope>EVB</scope></search><sort><creationdate>20240606</creationdate><title>ELECTROLYTE COMPOSITION, METHOD FOR SECONDARY ELECTROLYTE FILLING, AND LITHIUM SECONDARY BATTERY</title><author>SUN, Wenpo ; YU, Chaochen ; ZHOU, Li ; LI, Shuailong ; XIE, Tian ; DING, Youting</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_WO2024114190A13</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng ; fre</language><creationdate>2024</creationdate><topic>BASIC ELECTRIC ELEMENTS</topic><topic>ELECTRICITY</topic><topic>PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY</topic><toplevel>online_resources</toplevel><creatorcontrib>SUN, Wenpo</creatorcontrib><creatorcontrib>YU, Chaochen</creatorcontrib><creatorcontrib>ZHOU, Li</creatorcontrib><creatorcontrib>LI, Shuailong</creatorcontrib><creatorcontrib>XIE, Tian</creatorcontrib><creatorcontrib>DING, Youting</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SUN, Wenpo</au><au>YU, Chaochen</au><au>ZHOU, Li</au><au>LI, Shuailong</au><au>XIE, Tian</au><au>DING, Youting</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>ELECTROLYTE COMPOSITION, METHOD FOR SECONDARY ELECTROLYTE FILLING, AND LITHIUM SECONDARY BATTERY</title><date>2024-06-06</date><risdate>2024</risdate><abstract>The present application belongs to the technical field of lithium-ion batteries, and particularly relates to an electrolyte composition suitable for secondary electrolyte filling. The electrolyte composition comprises a first electrolyte and a second electrolyte, wherein the first electrolyte contains 1-2.5 wt% of vinylene carbonate, 0.1-3 wt% of lithium bis(fluorosulfonyl)imide, 5-15 wt% of lithium hexafluorophosphate, 0.01-5 wt% of a positive electrode film-forming additive, 0.01-5 wt% of a negative electrode film-forming additive, and 1-10 wt% of a fluorine-containing solvent, with the balance being a non-aqueous organic solvent. In the present application, by controlling the amounts of VC and LIFSI in the first filling, the additional filling of a fluorine-containing solvent and the addition of a positive electrode film-forming additive, the problems of an excessively high initial DCR, an excessively fast cyclic DCR growth speed, obvious long-cycle attenuation and diving can be avoided. Another core innov</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 | ELECTROLYTE COMPOSITION, METHOD FOR SECONDARY ELECTROLYTE FILLING, AND LITHIUM SECONDARY BATTERY |
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