CN112103467A - 一种锂离子电池负极 - Google Patents

一种锂离子电池负极 Download PDF

Info

Publication number
CN112103467A
CN112103467A CN202010781648.2A CN202010781648A CN112103467A CN 112103467 A CN112103467 A CN 112103467A CN 202010781648 A CN202010781648 A CN 202010781648A CN 112103467 A CN112103467 A CN 112103467A
Authority
CN
China
Prior art keywords
lithium ion
ion battery
negative electrode
active material
oxide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010781648.2A
Other languages
English (en)
Inventor
李恩雨
蔡先玉
楼志强
徐斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Shuangdeng Front New Energy Co ltd
Shuangdeng Group Co Ltd
Original Assignee
Jiangsu Shuangdeng Front New Energy Co ltd
Shuangdeng Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Shuangdeng Front New Energy Co ltd, Shuangdeng Group Co Ltd filed Critical Jiangsu Shuangdeng Front New Energy Co ltd
Priority to CN202010781648.2A priority Critical patent/CN112103467A/zh
Publication of CN112103467A publication Critical patent/CN112103467A/zh
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • 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
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/362—Composites
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/483—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides for non-aqueous cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • 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
    • H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/621—Binders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/624—Electric conductive fillers
    • H01M4/625—Carbon or graphite
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
    • H01M2004/027—Negative electrodes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Secondary Cells (AREA)

Abstract

本发明公开了一种锂离子电池负极，包括以下质量百分比的组分：负极活性材料70%~80%，导电剂10%~15%，粘结剂10%~15%，所述负极活性材料为氧化物碳化后的复合材料。本发明采用氧化物与碳的复合材料作为负极活性材料，替代传统石墨，避免石墨带来的锂离子嵌入及锂枝晶的问题，提高电池的能量密度，并且改善电池的循环寿命和倍率性能。

Description

一种锂离子电池负极
技术领域
本发明属于锂离子电池领域，具体涉及一种锂离子电池负极。
背景技术
能源在人类的生活中占据着重要的地位，而化石能源存在环境污染、资源枯竭等问题，因此可再生能源逐渐发展起来。锂离子电池由于高能量密度、高循环寿命等优势，广泛应用于动力、通信、储能等领域。但是当环境温度较低时，电池的性能会受到限制，这极大的影响了锂离子电池的发展。
常规工业生产中，主要采用石墨材料作为负极，但是石墨由于锂离子嵌入及锂枝晶的问题，导致锂离子电池的安全性和电化学性能受到影响。
发明内容
有鉴于此，本发明期望提供一种锂离子电池负极，采用氧化物与碳的复合材料作为负极活性材料，替代传统石墨，避免石墨带来的锂离子嵌入及锂枝晶的问题，提高电池的能量密度，并且改善电池的循环寿命和倍率性能。
为达到上述目的，本发明的技术方案是这样实现的：
本发明一种锂离子电池负极，包括以下质量百分比的组分：负极活性材料70％～80％，导电剂10％～15％，粘结剂10％～15％，所述负极活性材料为氧化物碳化后的复合材料。
进一步地，所述氧化物为MnO2、SiOx、TiO2中的任意一种或多种。
进一步地，所述导电剂为乙炔黑、导电炭黑、石墨烯、碳纳米管中的任意一种或多种。
进一步地，所述粘结剂为聚偏氟乙烯、丁苯橡胶、羧甲基纤维素钠中的任意一种或多种。
本发明有益效果如下：本发明采用氧化物与碳的复合材料作为负极活性材料，替代传统石墨，有利于改善锂离子电池出现锂枝晶问题，提高电池的能量密度，并且改善电池的循环寿命和倍率性能。
具体实施方式
为了能够更加详尽地了解本发明的特点与技术内容，下面对本发明的实现进行详细阐述。
本发明一种锂离子电池负极，包括以下质量百分比的组分：负极活性材料70％～80％，导电剂10％～15％，粘结剂10％～15％，所述负极活性材料为氧化物碳化后的复合材料。
进一步地，所述氧化物为MnO2、SiOx、TiO2中的任意一种或多种。
进一步地，所述导电剂为乙炔黑、导电炭黑、石墨烯、碳纳米管中的任意一种或多种。
进一步地，所述粘结剂为聚偏氟乙烯、丁苯橡胶、羧甲基纤维素钠中的任意一种或多种。
根据上述负极活性材料、导电剂、粘结剂比例配制浆料后，将混合均匀的浆料涂覆在铜箔上，依次经烘干、辊压、裁切后，制得锂离子电池负极。
下面通过列举具体实施例来对本发明进一步阐述：
实施例1
离子电池负极配方按照如下质量百分比的组分：负极活性材料为MnO2高温碳化70％，导电剂为乙炔黑15％，粘结剂为羧甲基纤维素钠和丁苯橡胶15％。
实施例2
离子电池负极配方按照如下质量百分比的组分：负极活性材料为SiOx高温碳化80％，导电剂为乙炔黑10％，粘结剂为聚偏氟乙烯10％。
实施例3
离子电池负极配方按照如下质量百分比的组分：负极活性材料为TiO2高温碳化75％，导电剂为导电炭黑10％，粘结剂为羧甲基纤维素钠和丁苯橡胶15％。
按照实施例1、2、3分别制作负极，采用常规正极，进行电池制作，对比项为负极活性材料为石墨的常规负极、常规正极，进行电池制作。对电池进行能量密度、0.5C 100次循环容量保持率和倍率性能测试。
Figure BDA0002620466530000031
本发明采用氧化物与碳的复合材料作为负极活性材料，替代传统石墨，避免了石墨带来的锂离子嵌入及锂枝晶的问题，提高了电池的能量密度，并且改善了电池的循环寿命和倍率性能。
以上所涉及器件的具体型号不作限制及详细描述，以上所涉及器件的深入连接方式不作详细描述，作为公知常识，本领域的技术人员能够理解。
以上所述，仅为本发明的较佳实施例，并非用于限定本发明的保护范围，故凡依照本发明专利范围所做的等效变化或修饰，均属于本发明专利权利要求范围内。

Claims (4)

1.一种锂离子电池负极，其特征在于，包括以下质量百分比的组分：负极活性材料70%~80%，导电剂10%~15%，粘结剂10%~15%，所述负极活性材料为氧化物碳化后的复合材料。
2.根据权利要求1所述的一种锂离子电池负极，其特征在于，所述氧化物为MnO2、SiOx、TiO2中的任意一种或多种。
3.根据权利要求1所述的一种锂离子电池负极，其特征在于，所述导电剂为乙炔黑、导电炭黑、石墨烯、碳纳米管中的任意一种或多种。
4.根据权利要求1所述的一种锂离子电池负极，其特征在于，所述粘结剂为聚偏氟乙烯、丁苯橡胶、羧甲基纤维素钠中的任意一种或多种。
CN202010781648.2A 2020-08-06 2020-08-06 一种锂离子电池负极 Pending CN112103467A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010781648.2A CN112103467A (zh) 2020-08-06 2020-08-06 一种锂离子电池负极

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010781648.2A CN112103467A (zh) 2020-08-06 2020-08-06 一种锂离子电池负极

Publications (1)

Publication Number Publication Date
CN112103467A true CN112103467A (zh) 2020-12-18

Family

ID=73749679

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010781648.2A Pending CN112103467A (zh) 2020-08-06 2020-08-06 一种锂离子电池负极

Country Status (1)

Country Link
CN (1) CN112103467A (zh)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105470481A (zh) * 2015-11-30 2016-04-06 武汉理工大学 一维多孔核壳结构氮掺杂碳包覆一氧化锰复合材料及制备方法
CN105789590A (zh) * 2016-04-06 2016-07-20 广州有色金属研究院 一种SiOx/C负极材料制备方法
CN108899549A (zh) * 2018-07-14 2018-11-27 西南大学 原位碳包覆TiO2(B)负极材料的制备方法和应用

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105470481A (zh) * 2015-11-30 2016-04-06 武汉理工大学 一维多孔核壳结构氮掺杂碳包覆一氧化锰复合材料及制备方法
CN105789590A (zh) * 2016-04-06 2016-07-20 广州有色金属研究院 一种SiOx/C负极材料制备方法
CN108899549A (zh) * 2018-07-14 2018-11-27 西南大学 原位碳包覆TiO2(B)负极材料的制备方法和应用

Similar Documents

Publication Publication Date Title
CN111725484B (zh) 一种负极片、制备方法和电池
CN104600320A (zh) 一种基于石墨烯的功能铜箔及其制备方法
CN113363437A (zh) 硅基负极材料及其制备方法、负极片、二次电池
CN101924211A (zh) 一种石墨烯/硅锂离子电池负极材料及制备方法
CN114665065B (zh) 一种正极极片及其制备方法和应用
WO2014153957A1 (zh) 一种水系碱金属离子储能器件
KR20150017580A (ko) 리튬황 배터리를 위한 유황 양극
CN111129489B (zh) 一种石墨烯基硫化锑负极材料及其制备方法和应用
KR20140147699A (ko) 리튬 이차전지용 음극활물질, 이를 포함하는 리튬 이차전지 및 상기 음극활물질의 제조방법
CN102610790A (zh) 锂离子二次电池及其正极片
CN107946548B (zh) 储锂铁氧化物与碳复合的锂离子电池负极材料的制备方法
CN108899518B (zh) 一种壳核结构的柔性硬脂酸锂包覆纳米硅复合材料及其制备和应用
CN108281620B (zh) 一种钠离子电池负极材料二氧化钛的制备方法
CN110838577A (zh) 用于固态电池的硫基正极活性材料及其制备方法和应用
KR20140070258A (ko) 양극 활물질 조성물 및 이를 포함하는 양극 및 리튬 이차 전지
CN113285050A (zh) 一种Li-M-X基固态锂电池正极及其制备方法
CN103367728A (zh) 一种活化天然石墨改性硅酸铁锂正极材料及其制备方法
CN115172663A (zh) 一种复合负极极片及其制备方法与应用
CN112103467A (zh) 一种锂离子电池负极
CN114597077A (zh) 一种预锂化炭负极材料在钠离子电容器和钾离子电容器中的应用
CN115172680A (zh) 一种高容量大倍率锂离子电池及其制备方法
CN113353970A (zh) 一种SnS-Fe1-xS双硫化物异质结及其合成方法和应用
CN113161603A (zh) 一种新型钾离子电池及其制备方法
CN112018380A (zh) 一种高性能倍率型锂离子电池及其制备方法
CN114649513A (zh) 一种兼具电子离子传导的电极材料添加物及其制备方法，以及正极材料和全固态二次电池

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20201218

RJ01 Rejection of invention patent application after publication