CN113728471A - 负极材料、负极极片、电化学装置和电子装置 - Google Patents

负极材料、负极极片、电化学装置和电子装置 Download PDF

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CN113728471A
CN113728471A CN202080030144.5A CN202080030144A CN113728471A CN 113728471 A CN113728471 A CN 113728471A CN 202080030144 A CN202080030144 A CN 202080030144A CN 113728471 A CN113728471 A CN 113728471A
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silicon
negative electrode
based material
polymer
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CN113728471B (zh
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王超
章婷
姜道义
崔航
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Ningde Amperex Technology Ltd
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    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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    • H01M4/0404—Methods of deposition of the material by coating on electrode collectors
    • H—ELECTRICITY
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    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
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    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/134—Electrodes based on metals, Si or alloys
    • H—ELECTRICITY
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    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H01M4/1395—Processes of manufacture of electrodes based on metals, Si or alloys
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    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/38—Selection of substances as active materials, active masses, active liquids of elements or alloys
    • H01M4/386—Silicon or alloys based on silicon
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    • H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
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    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/027—Negative electrodes
    • H—ELECTRICITY
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Abstract

一种负极材料、负极极片(12)、电化学装置和电子装置。负极材料包括由硅基材料(1)、聚合物(2)和碳纳米管(3)形成的复合物，其中，聚合物(2)具有第一基团和第二基团，第一基团化学键合至碳纳米管(3)，第二基团化学键合至硅基材料(1)。在硅基材料(1)颗粒表面同时引入碳纳米管(3)和具有双基团的聚合物(2)，通过聚合物(2)的两种基团分别与硅基材料(1)和碳纳米管(3)化学键合，提升了硅基材料(1)与碳纳米管(3)的结合力，并且形成均匀的碳纳米管(3)包覆层，从而可以显著改善硅基材料(1)的导电性，进而改善电化学装置的循环性能和倍率性能。

Description

PCT国内申请，说明书已公开。

Claims (12)

  1. PCT国内申请，权利要求书已公开。
CN202080030144.5A 2020-03-31 2020-03-31 负极材料、负极极片、电化学装置和电子装置 Active CN113728471B (zh)

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* Cited by examiner, † Cited by third party
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CN115552665A (zh) * 2021-12-08 2022-12-30 宁德新能源科技有限公司 电极、电化学装置和电子装置
CN115966653A (zh) * 2023-03-16 2023-04-14 宁德新能源科技有限公司 负极极片以及电化学装置

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CN103199257A (zh) * 2012-01-10 2013-07-10 三星Sdi株式会社 用于锂电池电极的粘结剂和包含所述粘结剂的锂电池
CN104327762A (zh) * 2014-09-30 2015-02-04 河南师范大学 一种锂离子电池增强型复合粘合剂、制备方法和应用
CN105762364A (zh) * 2016-04-25 2016-07-13 深圳大学 电池负电极及其制备方法和锂离子电池
CN110797520A (zh) * 2019-11-14 2020-02-14 宁德新能源科技有限公司 负极材料及包含其的电化学装置和电子装置

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CN101439972B (zh) * 2007-11-21 2013-01-09 比亚迪股份有限公司 硅碳复合材料及其制备方法以及电池负极和锂离子电池
US9362555B2 (en) * 2012-09-07 2016-06-07 Nanotek Instruments, Inc. Rechargeable lithium cell having a chemically bonded phthalocyanine compound cathode
CN105789576B (zh) * 2016-03-11 2018-05-15 江西紫宸科技有限公司 一种硅基负极材料的制备方法、负极材料和电池
CN105977463A (zh) * 2016-06-24 2016-09-28 广东省稀有金属研究所 一种SiOx复合负极材料的制备方法
CN113594455B (zh) * 2017-12-12 2023-03-24 贝特瑞新材料集团股份有限公司 硅基负极材料、其制备方法及在锂离子电池的用途
CN108232173A (zh) * 2018-01-31 2018-06-29 金山电池国际有限公司 锂离子电池负极材料、其制备方法、其负极和锂离子电池
CN109980199B (zh) * 2019-03-20 2020-09-29 宁德新能源科技有限公司 负极活性材料及其制备方法及使用该负极活性材料的装置

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CN103199257A (zh) * 2012-01-10 2013-07-10 三星Sdi株式会社 用于锂电池电极的粘结剂和包含所述粘结剂的锂电池
CN104327762A (zh) * 2014-09-30 2015-02-04 河南师范大学 一种锂离子电池增强型复合粘合剂、制备方法和应用
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115552665A (zh) * 2021-12-08 2022-12-30 宁德新能源科技有限公司 电极、电化学装置和电子装置
CN115966653A (zh) * 2023-03-16 2023-04-14 宁德新能源科技有限公司 负极极片以及电化学装置

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EP4131499A4 (en) 2023-07-26
EP4131499A1 (en) 2023-02-08
US20230042519A1 (en) 2023-02-09
CN113728471B (zh) 2023-09-05
WO2021195913A1 (zh) 2021-10-07

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