CN105261757A - 二硫化钛的负极材料及其锂电池的制备方法 - Google Patents

二硫化钛的负极材料及其锂电池的制备方法 Download PDF

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CN105261757A
CN105261757A CN201510687184.8A CN201510687184A CN105261757A CN 105261757 A CN105261757 A CN 105261757A CN 201510687184 A CN201510687184 A CN 201510687184A CN 105261757 A CN105261757 A CN 105261757A
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titanium disulfide
negative material
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lithium battery
negative electrode
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汪桂云
汪劲松
王鸣
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WUHU KAIER ELECTRICAL SCIENCE & TECHNOLOGY Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/36Selection of substances as active materials, active masses, active liquids
    • H01M4/58Selection 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
    • H01M4/581Chalcogenides or intercalation compounds thereof
    • H01M4/5815Sulfides
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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    • H01ELECTRIC ELEMENTS
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    • H01M4/13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
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    • H01M4/1397Processes of manufacture of electrodes based on inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy
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    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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    • H01M4/62Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/62Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
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    • YGENERAL 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
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Abstract

本发明的目的是提供一种二硫化钛负极材料及其锂电池的制备方法,先将二硫化钛、乙炔黑和偏氟乙烯三者混合加入N-甲基-吡咯烷酮制成浆料涂覆在铜箔上制成负极,之后将负极与锂正极、聚丙烯微孔膜和LiPF6/碳酸乙烯酯/碳酸二甲酯制成所需电池,制成的电池容量大,充放电循环性能优异,比容量损失低。

Description

二硫化钛的负极材料及其锂电池的制备方法
技术领域
本发明涉及锂电池领域,尤其涉及一种二硫化钛的负极材料及其锂电池的制备方法。
背景技术
作为新一代绿色高能可充电电源,锂离子电池由于具有电压高、能量密度大、循环性能好、自放电小、无记忆效应等一系列突出优点,近年来正以惊人的发展速度进入通信、交通、医疗、军工、航天等不同领域,成为目前最具发展应用前景的二次电池体系之一。锂离子电池不仅是便携式电子产品的理想能源。也是未来电动汽车的轻型高能动力源。目前商业化使用的负极材料大多为石墨类碳负极材料,该类负极材料在电池产品中的放电比容量(约330mAh·g-1)已经接近其理论值(372mAh·g-1),进一步提高其容量的空间已不大。因此,开发新型高容量负极材料成为当前的研究热点。
发明内容
为解决上述问题,本发明提供一种二硫化钛的负极材料及其锂电池的制备方法,采用高纯二硫化钛粉体作为锂电池的负极,具有高容量,解决了背景技术中出现的问题。
本发明的目的是提供一种二硫化钛的负极材料,
包括有:高纯二硫化钛粉体、导电剂、粘结剂、N-甲基-吡咯烷酮溶液。
进一步改进在于:所述导电剂为乙炔黑,粘结剂为偏氟乙烯。
进一步改进在于:所述高纯二硫化钛粉体、乙炔黑、偏氟乙烯的质量比为(65-85):(10-30):5。
进一步改进在于:所述二硫化钛粉体粒径为1-10μm。
一种二硫化钛的负极材料的锂电池制备方法,包括有以下步骤:
步骤一:将高纯二硫化钛粉体、导电剂、粘结剂均匀混合在一起;
步骤二:将步骤一混合的物质加入溶剂N-甲基-吡咯烷酮,将其搅拌均匀制成浆料;
步骤三:将步骤二制成的浆料均匀涂覆在铜箔上,之后干燥制成电极片;
步骤四:将制成的电极片剪成所需要的尺寸的电极作为负极;
步骤五:取金属锂为正极,聚丙烯微孔膜为隔膜,LiPF6/碳酸乙烯酯/碳酸二甲酯作电解液,在充满氩气的手套箱中制成电池。
进一步改进在于:所述步骤一的导电剂为乙炔黑,粘结剂为偏氟乙烯。
进一步改进在于:所述高纯二硫化钛粉体、乙炔黑、偏氟乙烯的质量比为(65-85):(10-30):5。
进一步改进在于:所述二硫化钛粉体粒径为1-10μm。
进一步改进在于:所述步骤三的干燥为真空干燥,温度为120℃,时间为12h。
进一步改进在于:所述LiPF6/碳酸乙烯酯/碳酸二甲酯的浓度为1mol·L-1
本发明的有益效果:本发明先将二硫化钛、乙炔黑和偏氟乙烯三者混合加入N-甲基-吡咯烷酮制成浆料涂覆在铜箔上制成负极,之后将负极与锂正极、聚丙烯微孔膜和LiPF6/碳酸乙烯酯/碳酸二甲酯制成所需电池;采用高纯二硫化钛粉体作为锂电池的负极,采用乙炔黑作为导电剂,偏氟乙烯作为粘结剂,三者质量比为(65-85):(10-30):5,制成的电池容量大,充放电循环性能优异,比容量损失低。
具体实施方式
为了加深对本发明的理解,下面将结合实施例对本发明作进一步详述,该实施例仅用于解释本发明,并不构成对本发明保护范围的限定。
本实施例提供一种二硫化钛的负极材料,
包括有:高纯二硫化钛粉体、导电剂、粘结剂、N-甲基-吡咯烷酮溶液。
所述导电剂为乙炔黑,粘结剂为偏氟乙烯。所述高纯二硫化钛粉体、乙炔黑、偏氟乙烯的质量比为80:15:5。所述二硫化钛粉体粒径为5μm。
一种二硫化钛的负极材料的锂电池制备方法,包括有以下步骤:
步骤一:将高纯二硫化钛粉体、导电剂、粘结剂均匀混合在一起;
步骤二:将步骤一混合的物质加入溶剂N-甲基-吡咯烷酮,将其搅拌均匀制成浆料;
步骤三:将步骤二制成的浆料均匀涂覆在铜箔上,之后干燥制成电极片;
步骤四:将制成的电极片剪成所需要的尺寸的电极作为负极;
步骤五:取金属锂为正极,聚丙烯微孔膜为隔膜,LiPF6/碳酸乙烯酯/碳酸二甲酯作电解液,在充满氩气的手套箱中制成电池。
所述步骤一的导电剂为乙炔黑,粘结剂为偏氟乙烯。所述高纯二硫化钛粉体、乙炔黑、偏氟乙烯的质量比为80:15:5。所述二硫化钛粉体粒径为5μm。所述步骤三的干燥为真空干燥,温度为120℃,时间为12h。所述LiPF6/碳酸乙烯酯/碳酸二甲酯的浓度为1mol·L-1
先将二硫化钛、乙炔黑和偏氟乙烯三者混合加入N-甲基-吡咯烷酮制成浆料涂覆在铜箔上制成负极,之后将负极与锂正极、聚丙烯微孔膜和LiPF6/碳酸乙烯酯/碳酸二甲酯制成所需电池;采用高纯二硫化钛粉体作为锂电池的负极,采用乙炔黑作为导电剂,偏氟乙烯作为粘结剂,三者质量比为80:15:5,制成的电池容量大,充放电循环性能优异,比容量损失低。

Claims (10)

1.一种二硫化钛的负极材料,其特征在于:
包括有:高纯二硫化钛粉体、导电剂、粘结剂、N-甲基-吡咯烷酮溶液。
2.如权利要求1所述二硫化钛负极材料,其特征在于:所述导电剂为乙炔黑,粘结剂为偏氟乙烯。
3.如权利要求2所述二硫化钛负极材料,其特征在于:所述高纯二硫化钛粉体、乙炔黑、偏氟乙烯的质量比为(65-85):(10-30):5。
4.如权利要求1所述二硫化钛负极材料,其特征在于:所述二硫化钛粉体粒径为1-10μm。
5.一种如权利要求1所述二硫化钛的负极材料的锂电池制备方法,其特征在于:包括有以下步骤:
步骤一:将高纯二硫化钛粉体、导电剂、粘结剂均匀混合在一起;
步骤二:将步骤一混合的物质加入溶剂N-甲基-吡咯烷酮,将其搅拌均匀制成浆料;
步骤三:将步骤二制成的浆料均匀涂覆在铜箔上,之后干燥制成电极片;
步骤四:将制成的电极片剪成所需要的尺寸的电极作为负极;
步骤五:取金属锂为正极,聚丙烯微孔膜为隔膜,LiPF6/碳酸乙烯酯/碳酸二甲酯作电解液,在充满氩气的手套箱中制成电池。
6.如权利要求5所述二硫化钛的负极材料的锂电池的制备方法,其特征在于:所述步骤一的导电剂为乙炔黑,粘结剂为偏氟乙烯。
7.如权利要求5所述二硫化钛的负极材料的锂电池的制备方法,其特征在于:所述高纯二硫化钛粉体、乙炔黑、偏氟乙烯的质量比为(65-85):(10-30):5。
8.如权利要求5所述二硫化钛的负极材料的锂电池的制备方法,其特征在于:所述二硫化钛粉体粒径为1-10μm。
9.如权利要求5所述二硫化的钛负极材料的锂电池的制备方法,其特征在于:所述步骤三的干燥为真空干燥,温度为120℃,时间为12h。
10.如权利要求5所述二硫化钛的负极材料的锂电池的制备方法,其特征在于:所述LiPF6/碳酸乙烯酯/碳酸二甲酯的浓度为1mol·L-1
CN201510687184.8A 2015-10-22 2015-10-22 二硫化钛的负极材料及其锂电池的制备方法 Pending CN105261757A (zh)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108573813A (zh) * 2018-05-18 2018-09-25 河南大学 一种二维纳米二硫化钛及其薄膜电极的制备方法
CN109192946A (zh) * 2018-08-28 2019-01-11 大同新成新材料股份有限公司 一种钛基锂离子负极材料的制备方法

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US4983476A (en) * 1990-06-18 1991-01-08 The United States Of America As Represented By The Secretary Of The Army Rechargeable lithium battery system

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108573813A (zh) * 2018-05-18 2018-09-25 河南大学 一种二维纳米二硫化钛及其薄膜电极的制备方法
CN109192946A (zh) * 2018-08-28 2019-01-11 大同新成新材料股份有限公司 一种钛基锂离子负极材料的制备方法
CN109192946B (zh) * 2018-08-28 2022-04-19 大同新成新材料股份有限公司 一种钛基锂离子负极材料的制备方法

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