CN101510625B - Ultra-high magnification lithium ion battery - Google Patents

Ultra-high magnification lithium ion battery Download PDF

Info

Publication number
CN101510625B
CN101510625B CN 200910021703 CN200910021703A CN101510625B CN 101510625 B CN101510625 B CN 101510625B CN 200910021703 CN200910021703 CN 200910021703 CN 200910021703 A CN200910021703 A CN 200910021703A CN 101510625 B CN101510625 B CN 101510625B
Authority
CN
China
Prior art keywords
ion battery
tab
negative electrode
positive electrode
lithium ion
Prior art date
Application number
CN 200910021703
Other languages
Chinese (zh)
Other versions
CN101510625A (en
Inventor
何显峰
李峰
杨洪
Original Assignee
西安瑟福能源科技有限公司
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 西安瑟福能源科技有限公司 filed Critical 西安瑟福能源科技有限公司
Priority to CN 200910021703 priority Critical patent/CN101510625B/en
Publication of CN101510625A publication Critical patent/CN101510625A/en
Application granted granted Critical
Publication of CN101510625B publication Critical patent/CN101510625B/en

Links

Classifications

    • 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage
    • Y02E60/12Battery technologies with an indirect contribution to GHG emissions mitigation
    • Y02E60/122Lithium-ion batteries

Abstract

The invention discloses a lithium ion battery with superhigh multiplying power, which comprises a positive plate, a negative plate, a membrane, an electrolyte solution, a plate lug and a packing shell. The positive plate is manufactured by coating the mixed slurry of a positive active material, a conducting agent and a cementing agent on both sides of an aluminium foil; the negative plate is manufactured by coating the mixed slurry of a negative active material, the conducting agent and the cementing agent on both sides of a copper foil; and the electrolyte solution is a mixed solution of lithium and an organic solvent. The lithium ion battery is capable of discharging continually at a superhigh multiplying power and the discharge multiplying power can reach 35C-50C. The discharge capacity of the discharge multiplying power at 35C, 40C, 45C, 50C can respectively reach 96.3 percent, 95.6 percent, 95.1 percent and 94.5 percent of the discharge capacity at 1C.

Description

一种超高倍率锂离子电池 An ultra high rate lithium-ion batteries

技术领域 FIELD

[0001] 本发明属于锂离子电池技术领域,特别是涉及一种可在超高倍率条件下持续放电的锂离子电池。 [0001] The present invention belongs to the technical field of lithium ion battery, in particular, relates to a sustained high rate discharge conditions in a lithium ion battery.

背景技术 Background technique

[0002] 锂离子电池自1990年商品化以来,凭借其重量轻、比能量高、工作电压高、寿命长、自放电低等优点,迅速应用于各种现代化移动通讯设备和便携式电子设备领域,锂离子电池行业得到了飞速发展。 [0002] The commercialization of lithium-ion batteries since 1990, by virtue of its light weight, high energy density, high operating voltage, long life, and low self-discharge, rapidly applied to a variety of modern mobile communication devices and portable electronics devices, lithium-ion battery industry has been rapid development. 上述电子设备具有工作电流小、使用时间长的特点,一般锂离子电池可以满足要求。 The electronic device having a small operating current, the characteristics of a long time, generally meet the requirements of a lithium ion battery.

[0003] 随着技术的不断更新和发展,市场对移动电子设备的要求也在不断提高。 [0003] With the continuous updating and development of technology, market demand for mobile electronic devices is also rising. 如车模、航模、船模等领域前期采用其它电池或石油作为动力,因锂离子电池的众多优点,该领域现在也逐渐转向以锂离子电池作为动力源,这些产品需要持续大电流放电来满足其动力需要,而目前常见的锂离子电池只能满足IC左右的放电要求,无法应用于此领域。 The car models, model aircraft, ship model fields early by other cells or petroleum powered, due to the many advantages of the lithium-ion battery, this art is now shifting towards a lithium ion battery as a power source, these products require sustained high-current discharge to meet their power requirements, and the present common lithium ion batteries can only meet about IC discharge requirements, can not be applied in this area. 在此应用需求的推动下产生了一种高倍率锂离子电池,高倍率锂离子电池除了具有常用锂离子电池的优点外,最突出的特点是可以在高倍率情况下进行持续放电。 The driven application needs to generate a high-rate lithium-ion batteries, high-rate lithium-ion batteries have advantages in addition to conventional lithium ion batteries, the most prominent feature may be made at a high rate continuous discharge cases. 目前常见的产品可以在IOC〜20C持续放电,但随着车模、航模、船模技术的不断发展,IOC〜20C乃至25C都已经无法满足产品的特殊要求。 Current common products can continue to discharge IOC~20C, but with the development of car models, model aircraft, ship model technology, IOC~20C even 25C have been unable to meet the special requirements of the product. 因此更高倍率锂离子电池需求日益增加来满足使用要求。 Thus a higher rate increasing demand for lithium ion batteries to meet the requirements.

发明内容 SUMMARY

[0004] 本发明的目的是为了克服现有技术的不足,提供一种可以在超高倍率35C〜50C 条件下进行持续放电的锂离子电池。 [0004] The object of the present invention is to overcome the deficiencies of the prior art, there is provided a lithium ion battery can be continuously discharged at high rate 35C~50C conditions.

[0005] 为解决上述技术问题,本发明采用的技术方案是:一种超高倍率锂离子电池,包括正极片、负极片、隔膜、电解液和极耳以及包装壳,其特征在于,所述正极片是将正极活性物质、导电剂及粘结剂的混合浆料涂布在铝箔两面而制成,所述负极片是将负极活性物质、 导电剂及粘结剂的混合浆料涂布在铜箔两面而制成,所述电解液为锂盐与有机溶剂的混合溶液,锂盐的浓度为1〜1. 3mol/L,所述正极片混合浆料中的正极活性物质、导电剂和粘结剂的重量百分比分别为:90〜96%,1. 0〜5. 0%,2. 0〜6. 0%;其中,正极活性物质为钴酸锂和三元材料中的一种或它们的组合,导电剂为碳黑、石墨、碳纤维和碳纳米管的一种或两种以上的混合物,粘结剂为聚偏氟乙烯的均聚物或聚偏氟乙烯-六氟丙烯的共聚物;所述负极片混合浆料中负极活性物质、导电剂和粘结剂的 [0005] To solve the above problems, the present invention adopts the technical solution is: A high rate lithium-ion battery, comprising a positive electrode sheet, negative electrode sheet, separator, and electrolyte, and the package can tab, wherein said the positive electrode mixture slurry was applied to a sheet of the positive electrode active material, a conductive agent and a binder made of aluminum foil on both sides of the negative electrode plate is a negative electrode active material, a conductive agent and a binder mixed slurry was applied in made of copper foil on both surfaces, the electrolyte is a lithium salt and a mixed solution of an organic solvent, concentration of the lithium salt is 1~1. 3mol / L, mixing the positive electrode plate of the positive electrode active material slurry, a conductive agent, and binder percentages are by weight: 90~96%, 1 0% 0~5 2 0~6 0%; wherein the positive electrode active material and lithium cobaltate as a ternary material or.... combinations thereof, the conductive agent is a mixture of carbon black, graphite, carbon fibers and carbon nanotubes or two or more, the binder is a polyvinylidene fluoride homopolymer or a polyvinylidene fluoride - hexafluoropropylene copolymer thereof; in the negative electrode mix slurry sheet negative electrode active material, a conductive agent and a binder 重量百分比分别为:90〜96%,1. 0〜 5. 0%,1. 5〜6. 0%,其中,负极活性物质为中间相碳微球和改性人造石墨中的一种或它们的组合,导电剂为碳黑、石墨、碳纤维和碳纳米管的一种或两种以上的混合物,粘结剂为水性粘结剂丁苯橡胶和羧甲基纤维素的组合物或油性粘结剂聚偏氟乙烯的均聚物或聚偏氟乙烯-六氟丙烯的共聚物;锂盐为六氟磷酸锂,有机溶剂为碳酸乙烯酯、碳酸二甲酯、碳酸甲乙酯和碳酸二乙酯的混合物,碳酸乙烯酯:碳酸二甲酯:碳酸甲乙酯:碳酸二乙酯的重量百分比为3 : 4 : 2 : 1 ;所述三元材料为LiNixMnyCOl_x_y02,其中X = O〜l/3,y = 0〜1/3。 Percentages are by weight: 90~96%, 1 0~ 5.0%, 1 0% 5 to 6, wherein the negative electrode active material is mesocarbon microbeads and a modified graphite, or artificial... the combination of the conductive agent is a mixture of carbon black, graphite, carbon fibers and carbon nanotubes or two or more, the binder is an aqueous styrene-butadiene rubber binder, and carboxymethyl cellulose or oily adhesive composition agent of polyvinylidene fluoride homopolymer or a polyvinylidene fluoride - hexafluoropropylene copolymer; lithium salt is lithium hexafluorophosphate, the organic solvent is ethylene carbonate, dimethyl carbonate, ethylmethyl carbonate and a mixture of diethyl carbonate , ethylene carbonate: dimethyl carbonate: ethylmethyl carbonate: diethyl carbonate by weight of 3: 4: 2: 1; the ternary material is LiNixMnyCOl_x_y02, wherein X = O~l / 3, y = 0~1 / 3.

[0006] 所述正极片的双面敷料面密度为120〜200g/m2,压实密度为3. 0〜3. 8g/m3,所述铝箔的面密度为30g/m2以上。 The areal density of the double-sided dressing [0006] The positive electrode sheet was 120~200g / m2, a tap density of 3. 0~3. 8g / m3, the surface density of the foil is 30g / m2 or more.

[0007] 所述负极片的双面敷料面密度为70〜120g/m2,压实密度为1. 2〜1. 8g/m3,所述铜箔的面密度为80g/m2以上。 [0007] The negative electrode sheet is a double-sided surface density of the dressing 70~120g / m2, a tap density of 1. 2~1. 8g / m3, density of the copper foil surface 80g / m2 or more.

[0008] 所述隔膜的孔隙率在45%以上,隔膜厚度为40um以下。 [0008] The porosity of the separator is 45% or more, a separator having a thickness of 40um or less.

[0009] 所述电解液的电导率在llms/cm以上。 The [0009] conductivity of the electrolyte in llms / cm or more.

[0010] 所述极耳包括正极极耳和负极极耳,正极极耳为铝极耳,负极极耳为镍极耳、铜镀镍极耳或铜极耳。 [0010] The positive electrode tab comprises a tab and the negative electrode tab, the positive electrode tab is aluminum tab, the negative electrode tab tab nickel, nickel-plated copper or a copper tab tab.

[0011] 所述碳黑、石墨、碳纤维和碳纳米管的比表面积为200m2/g以上。 [0011] The carbon black, graphite, carbon fibers and carbon nanotubes, surface area of ​​200m2 / g or more.

[0012] 所述中间相碳微球和改性人造石墨的粒径为15um以下,比表面积为1. 5m2/g以上。 Particle size [0012] The mesophase carbon microbeads and a modified synthetic graphite is 15um or less, the specific surface area was 1. 5m2 / g or more.

[0013] 锂电池的制作工艺中注液前须在温度70〜90°C条件下干燥12h以上。 [0013] The production process of the lithium battery to be dried at a temperature of more than 12h at 70~90 ° C before pouring conditions.

[0014] 本发明与现有技术相比具有以下优点:本发明锂电池可在超高倍率条件下持续放电,放电倍率可达35C〜50C,放电倍率在35C、40C、45C、50C的放电容量分别达IC放电容量的96. 3%,95. 6%,95. 1%,94. 5%。 [0014] The present invention has the following advantages over the prior art: the lithium battery of the present invention may be continued at high rate discharge conditions, the discharge rate of up to 35C~50C, discharge rate of the discharge capacity in 35C, 40C, 45C, 50C of IC discharge capacity of respectively 96.3%, 95.6%, 95.1%, 94.5%.

[0015] 下面结合附图和实施例,对本发明做进一步的详细描述。 [0015] accompanying drawings and the following embodiments, the present invention will be further described in detail. 附图说明 BRIEF DESCRIPTION

[0016] 图1为本发明高倍率锂离子电池的外型示意图(其中,图1(a)为双极耳同侧,图1 (b)为双极耳异侧,图1 (c)和图1 (d)为四极耳异侧)。 Schematic appearance [0016] Figure 1 of the present invention a high rate lithium-ion battery (wherein FIG. 1 (a) is a bipolar ipsilateral ear, FIG. 1 (b) is a bipolar ear opposite side, FIG. 1 (c) and FIG 1 (d) four tab opposite side).

[0017] 图2为本发明高倍率锂离子电池的正、负极片形状示意图(其中,图2(a)为单极耳偏,图2(b)为单极耳正,图2(c)为双极耳同侧,图2(d)为双极耳异侧)。 N, schematic sheet shape (which, in FIG. 2 (a) is a unipolar bias ear, FIG. 2 (b) a negative electrode [0017] FIG. 2 of the present invention, the high power lithium ion battery positive monopolar ear, FIG. 2 (c) bipolar ipsilateral ear, FIG. 2 (d) is a bipolar ear opposite side).

[0018] 图3为本发明高倍率锂离子电池的35C放电曲线图。 35C shows the discharge curve [0018] FIG. 3 is an high-rate lithium-ion batteries.

[0019] 图4为本发明高倍率锂离子电池的40C放电曲线图。 [0019] FIG. 4 40C high rate discharge curve of the lithium ion battery of the present invention.

[0020] 图5为本发明高倍率锂离子电池的45C放电曲线图。 [0020] FIG. 5 45C high rate discharge curve of the lithium ion battery of the present invention.

[0021] 图6为本发明高倍率锂离子电池的50C放电曲线图。 [0021] FIG. 6 50C high rate discharge curve of the lithium ion battery of the present invention.

具体实施方式 Detailed ways

[0022] 实施例1 [0022] Example 1

[0023] 以2500〜5000mAh超高倍率锂离子电池的制作过程为例进行说明,电池结构如图1(a)所示。 [0023] In the production process 2500~5000mAh high rate lithium-ion batteries as an example, the battery structure shown in Figure 1 (a) FIG. 按下列方法进行实施: Carried out in the following manner:

[0024] 正极浆料的配制:以N- 二甲基吡咯烷酮(NMP)为溶剂,活性物质为改性多孔球状钴酸锂(LiCoO2)、导电剂为超级导电碳黑(Super P)和气相生长碳纤维(VGCF),NMP添加比例在40〜65%之间。 [0024] Preparation of positive electrode slurry: A N- dimethyl pyrrolidone (NMP) as a solvent, the active substance is a modified porous spherical lithium cobaltate (of LiCoO2), super conductive carbon black as a conductive agent (Super P) and vapor phase growth carbon fiber (VGCF), NMP addition ratio between 40~65%. 本实施例所用比例为=LiCoO2 : Super P : VGCF : PVDF : NMP = 90 : 3 : 2 : 5 : 60。 The embodiment of the present embodiment is proportional = LiCoO2: Super P: VGCF: PVDF: NMP = 90: 3: 2: 5: 60. 首先将LiCo02、Super P、VGCF三种物质在球磨机中进行球磨预分散处理,使导电剂均勻分散在LiCoO2颗粒表面;然后将PVDF加入到NMP中,搅拌2〜4h,将处理好的正极混合物分三次加入到PVDF胶溶剂中,高速搅拌6〜8h后抽真空脱气泡待涂布。 First LiCo02, Super P, VGCF three substances for pre-milled in a ball mill dispersion treatment, the conductive agent is uniformly dispersed in the surface of the particles of LiCoO2; was then added to the PVDF in NMP, with stirring 2~4h, sends the processed positive electrode mixture was partitioned three gum was added to the PVDF in a solvent, the high-speed stirring 6~8h vacuum defoamed to be coated. [0025] 正极极片的制作:将配制好的正极浆料涂布在集流体铝箔上,敷料面密度在120〜200g/m2之间,涂布极片经干燥、辊压、冲切后待组装,完成正极片的制作(如图2(a) 所示)。 Production [0025] The positive electrode plate: The prepared positive electrode slurry was coated on an aluminum foil current collector, dressing surface density between 120~200g / m2, coating pole piece is dried, roll-pressed to be punched after assembly, to complete the production of the positive electrode plate (FIG. 2 (a) below).

[0026] 负极浆料的配制:负极浆料的配制与正极配制步骤一致,以水为溶剂,活性物质为中间相碳微球(MCMB),导电剂为超级导电碳黑(Super P),粘接剂为苯橡胶(SBR)和羧甲基纤维素(CMC)的混合物,水添加比例在90〜120之间,本实施例所用比例为:MCMB : Super P : SBR : CMC : H2O = 92 : 3 : 3 : 2 : 110。 [0026] The negative electrode slurry was prepared: consistent with the positive electrode negative electrode paste formulation formulation step, water as solvent, the active substance is a mesophase carbon microbeads (the MCMB), super conductive carbon black as a conductive agent (Super P), sticky bonding agent is a mixture of styrene-butadiene rubber (SBR) and carboxymethyl cellulose (CMC), the water addition ratio between 90~120, the present embodiment is proportional to: MCMB: Super P: SBR: CMC: H2O = 92: 3: 3: 2: 110. 首先将MCMB 与Super P 在球磨机中进行球磨预分散处理,使导电剂均勻分散在MCMB表面;然后将CMC加入去离子水中,搅拌3〜 4h,将处理好的负极混合物质分二次加入上述CMC的水溶液中,搅拌均勻后加入SBR,最后搅拌均勻后抽真空脱气泡待涂布。 First MCMB with Super P for pre-milling in a ball mill dispersion treatment, the conductive agent is uniformly dispersed in the surface of MCMB; CMC was then added to deionized water, stirred 3~ 4h, sends the processed material at the second negative-electrode mixture was added to the CMC aqueous solution, was added stir SBR, stir the last vacuum defoamed to be coated.

[0027] 负极极片的制作:将配制好的负极浆料涂布在集流体铜箔上,敷料面密度在70〜 120g/m2之间,涂布极片经干燥、辊压、冲切后待组装,完成负极片的制作(如图2(a)所示)。 After the prepared slurry was coated on a negative electrode current collector foil, the dressing surface density between 70~ 120g / m2, the coating was dried pole pieces, rolling, punching: Production [0027] The negative electrode sheet to be assembled to complete the negative electrode sheet (FIG. 2 (a) below).

[0028] 待注液电芯的制作:将冲切好的正、负极片和隔膜按隔膜、负极、隔膜、正极、隔膜、 负极的顺序依次层叠组合成电芯(如图1(a)所示),组合成的电芯利用铝极耳、镍极耳进行超声波焊接,将焊接完的电芯入壳进行封装待注液。 [0028] Production of the batteries to be injection: the die-cut positive and negative plate and a separator by a separator, a negative electrode, a separator, a positive electrode, a separator, a negative electrode are laminated sequentially combined into batteries (FIG. 1 (a) is shown), combined into batteries using aluminum tab, ultrasonic welding a nickel tab, the cell after soldering is to be encapsulated into the shell injection.

[0029] 电解液的配制:锂盐为六氟磷酸锂(LiPF6),溶剂为重量比EC : DMC : EMC : DEC =3:4:2:1的四元混合液。 [0029] The preparation of the electrolytic solution: a lithium salt is lithium hexafluorophosphate (LiPF6), weight ratio of solvent EC: DMC: EMC: 1 mixture of four yuan: DEC = 3: 4: 2.

[0030] 电池的化成:将注液静置后的电池进行化成,化成采用0. 05C电流充电2h,静置IOmin, 0. 2C电流充电200min完成电池的化成,最后完成电池的分容。 [0030] battery into: Note the battery was allowed to stand after the chemical conversion, into current charge using 0. 05C 2h, allowed to stand IOmin, 0. 2C charging current into the battery 200min completed, finalization sub-capacity battery.

[0031] 实施例2 [0031] Example 2

[0032] 本实施例正负极配方、电解液、隔膜、极耳与实施案1中一致,但正负极浆料制作方法与实施案1不一致。 [0032] The formulations according to the present embodiment, positive and negative, in the same electrolyte, separator, electrode tabs and the case of Embodiment 1, but the manufacturing method of the positive and negative electrode slurry Embodiment 1 Case inconsistent. 正极浆料的配制采用实施案1中的配方,将PVDF加入到NMP中, 搅拌2〜4h ;然后将VGCF加入PVDF胶液中,搅拌3〜4h ;再将Super P加入上述混合液中搅拌2〜3h ;最后将LiCoO2加入搅拌均勻后抽真空脱气泡,后工序制作同实施案1完成正极片制作。 The positive electrode slurry prepared using the formulation in a text embodiment, the PVDF in NMP was added to the stirred 2~4h; VGCF was then added PVDF glue stirred 3~4h; Super P then added to the mixture stirred for 2 ~3h; LiCoO2 finally added stir vacuum deaerated, after the step of making the case with the embodiment 1 to complete a positive electrode sheet produced.

[0033] 负极浆料的配制,将CMC加入到去离子水中,搅拌3〜4h ;然后将Super P加入CMC 胶液中,搅拌3〜4h ;再将MCMB加入上述混合液中搅拌4〜6h ;最后将SBR加入搅拌均勻后抽真空脱气泡,后工序制作同实施案1完成负极片制作。 [0033] The negative electrode slurry was prepared, the CMC was added to the deionized water, stirred 3~4h; Super P was then added to CMC is stirred 3~4h; MCMB then added to the mixture with stirring 4~6h; Finally, the SBR was added stir vacuum deaerated, after the step of making the case with the embodiment 1 to complete the negative electrode sheet produced.

[0034] 实施例3 [0034] Example 3

[0035] 本实施例的正、负极配方、电解液、隔膜、极耳的制作方法与实施案1中一致,但正负极片的集流方式与实施案1不一致。 [0035] The present positive and negative formulation, electrolyte, separator embodiment, the method of manufacturing the tab text in accordance with Embodiment 1, the positive and negative electrode current collecting plate as in the case of an inconsistent manner. 实施案2极片分别采用单侧单极耳中间集流(如图2 (b)所示)、同侧双极耳集流(如图2 (c)所示)、异侧双极耳集流(如图2 (d)所示)。 Embodiment 2 Case unipolar pole piece respectively one-sided lug intermediate header (FIG. 2 (b) below), the ipsilateral ear bipolar collector (FIG. 2 (c) below), different side of the bipolar current collector lug stream ((d), FIG. 2). 将上述形状的正负极片按隔膜、负极、隔膜、正极、隔膜、负极的顺序进行层叠组合制作电池(具体如图1 (b)、1 (c)、1 (d)所示),后工序制作同实施案1完成电池的制作。 The shape of the above-described positive and negative electrode sheet by a separator, a negative electrode, a separator, a positive electrode, a separator, a negative electrode sequentially stacked battery prepared compositions (particularly FIG. 1 (b), 1 (c), 1 (d) below), the the step of producing the same embodiment 1 to complete the production of the battery case.

[0036] 实施例4 [0036] Example 4

[0037] 本实施例的正、负极配方、电解液、隔膜、的制作方法与实施案1中一致,但使用的极耳与实施案1不一致。 [0037] The present positive and negative formulation, electrolyte, separator, and the manufacturing method of the embodiment consistent with the case in Example 1, but with the tab pattern used in embodiment 1 is inconsistent. 正极仍采用铝极耳,负极分别采用铜镀镍极耳、铜极耳与负极集流体进行焊接,将焊接好的电芯入壳、注液、化成、分容完成电池制作。 The positive electrode tab still aluminum, copper negative electrode of nickel-plated tab, a copper tab is welded to the negative electrode current collector, the electrically welded into the shell of the core, injection, formation and classification capacity to complete cell fabrication.

[0038] 实施例5[0039] 正极浆料的配制:以N- 二甲基吡咯烷酮(NMP)为溶剂,活性物质为改性多孔球状钴酸锂(LiCoO2)与三元材料(LiNixMnyCOl_x_y02)(其中x = 0〜l/3,y = 0〜1/3)的混合物, 导电剂为超级导电碳黑(Super P)和气相生长碳纤维(VGCF),NMP添加比例在40〜70% 之间。 5 [0039] Preparation of positive electrode slurry [0038] Example: In-dimethyl-N- methylpyrrolidone (NMP) as a solvent, a porous spherical active material is a modified lithium cobaltate (of LiCoO2) with a ternary material (LiNixMnyCOl_x_y02) (wherein x = 0~l / 3, y = 0~1 / 3) a mixture of super-conductive carbon black as a conductive agent (super P), and vapor grown carbon fibers (VGCF), NMP addition ratio between 40~70%. 本实施例所用比例为=LiCoO2 : LiNixMnyCo1^yO2 : Super P : VGCF : PVDF : NMP =60 : 31 : 2 : 2 : 5 : 65。 The embodiment of the present embodiment is proportional = LiCoO2: LiNixMnyCo1 ^ yO2: Super P: VGCF: PVDF: NMP = 60: 31: 2: 2: 5: 65. 首先将LiCo02、LiNixMnyCOl_x_y02、SuperP、VGCF 四种物质在球磨机中进行球磨预分散处理,使导电剂均勻分散在LiCoO2和LiNixMnyCOl_x_y02球状颗粒表面;然后将PVDF加入到NMP中,搅拌2〜4h,将处理好的正极混合物分三次加入到PVDF胶溶剂中,高速搅拌6〜8h后抽真空脱气泡待涂布。 First LiCo02, LiNixMnyCOl_x_y02, SuperP, VGCF four substances for pre-milled in a ball mill dispersion treatment, the conductive agent is uniformly dispersed in the spherical surface of the LiCoO2 particle and LiNixMnyCOl_x_y02; was then added to the PVDF in NMP, with stirring 2~4h, the handle the cathode mixture was added in three portions to a PVDF peptizers, the high speed stirring 6~8h vacuum defoamed to be coated.

[0040] 负极浆料的配制:负极浆料的配制与正极配制步骤一致,以水为溶剂,活性物质为MCMB与改性人造石墨的混合物,导电剂为超级导电碳黑(Super P)与VGCF混合物,粘接剂为SBR与CMC的混合物,去离子水添加比例在90〜130之间,本实施例所用比例为:MCMB : 人造石墨:Super P : VGCF : SBR : CMC : H2O = 50 : 41 : 2 : 1 : 3 : 3 : 120。 [0040] The negative electrode slurry was prepared: consistent with the positive electrode negative electrode paste formulation formulation step, water as solvent, the active substance is a mixture of modified and MCMB artificial graphite, the conductive agent is a super conductive carbon black (Super P) and VGCF the mixture, the adhesive is a mixture of SBR and CMC, and deionized water addition ratio between 90~130, the present embodiment is proportional to: MCMB: artificial graphite: Super P: VGCF: SBR: CMC: H2O = 50: 41 : 2: 1: 3: 3: 120. 首先将MCMB、人造石墨、VGCF与Super P在球磨机中进行球磨预分散处理,使导电剂均勻分散在MCMB和人造石墨表面;然后将CMC加入去离子水中,搅拌3〜4h,将处理好的负极混合物质分二次加入上述CMC的水溶液中,搅拌均勻后加入SBR,最后搅拌均勻后抽真空脱气泡待涂布。 First MCMB, artificial graphite, Super P of VGCF and milling in a ball mill for pre-dispersion treatment, the conductive agent is uniformly dispersed in the surface of MCMB artificial graphite; CMC was then added to deionized water, stirring 3~4h, sends the processed negative substance mixture added to the sub-aqueous secondary CMC was added SBR stir, stir the last vacuum defoamed to be coated.

[0041] 将配制好的正负极浆料涂布在集流体上,涂布极片经干燥、辊压、冲切后组装、入壳、注液、化成、分容完成电池的制作。 [0041] The prepared slurry was coated on the positive and negative electrode current collector, the coated electrode sheet is dried, roll-pressed, is assembled by punching, into the shell, the injection, into, sub-capacity battery production is completed.

Claims (8)

  1. 一种超高倍率锂离子电池,包括正极片、负极片、隔膜、电解液和极耳以及包装壳,其特征在于,所述正极片是将正极活性物质、导电剂及粘结剂的混合浆料涂布在铝箔两面而制成,所述负极片是将负极活性物质、导电剂及粘结剂的混合浆料涂布在铜箔两面而制成,所述电解液为锂盐与有机溶剂的混合溶液,锂盐的浓度为1~1.3mol/L,所述正极片混合浆料中的正极活性物质、导电剂和粘结剂的重量百分比分别为:90~96%,1.0~5.0%,2.0~6.0%;其中,正极活性物质为钴酸锂和三元材料中的一种或它们的组合,导电剂为碳黑、石墨、碳纤维和碳纳米管的一种或两种以上的混合物,粘结剂为聚偏氟乙烯的均聚物或聚偏氟乙烯‑六氟丙烯的共聚物;所述负极片混合浆料中负极活性物质、导电剂和粘结剂的重量百分比分别为:90~96%,1.0~5.0%,1.5~6.0% An ultra high rate lithium-ion battery, comprising a positive electrode sheet, negative electrode sheet, separator, electrolyte and packaging, and the tab housing, wherein the positive electrode plate is a mixed slurry of the positive electrode active material, conductive agent and a binder aluminum foil material coated on both sides is made, the negative electrode plate is a negative electrode active material, a conductive agent and a binder mixed slurry was applied on both surfaces of copper foil is made, the electrolyte is a lithium salt and an organic solvent mixed solution, concentration of the lithium salt of 1 ~ 1.3mol / L, mixing the positive electrode plate of the positive electrode active material slurry, conductive agent and binder weight percentages were: 90 ~ 96%, 1.0 to 5.0% , 2.0 to 6.0%; wherein the positive electrode active material is lithium cobalt oxide and one ternary material or a combination thereof, as a conductive agent, carbon black, graphite, carbon fibers and carbon nanotubes, or a mixture of two or more the binder is a polyvinylidene fluoride homopolymer or a polyvinylidene fluoride - hexafluoropropylene copolymer; a negative electrode plate in the anode mixture slurry by weight active material, conductive agent and binder percentages are: 90 ~ 96%, 1.0 to 5.0%, 1.5 to 6.0% 其中,负极活性物质为中间相碳微球和改性人造石墨中的一种或它们的组合,导电剂为碳黑、石墨、碳纤维和碳纳米管的一种或两种以上的混合物,粘结剂为水性粘结剂丁苯橡胶和羧甲基纤维素的组合物或油性粘结剂聚偏氟乙烯的均聚物或聚偏氟乙烯‑六氟丙烯的共聚物;锂盐为六氟磷酸锂,有机溶剂为碳酸乙烯酯、碳酸二甲酯、碳酸甲乙酯和碳酸二乙酯的混合物,碳酸乙烯酯∶碳酸二甲酯∶碳酸甲乙酯∶碳酸二乙酯的重量百分比为3∶4∶2∶1;所述三元材料为LiNixMnyCo1‑x‑yO2,其中x=0~1/3,y=0~1/3。 Wherein the negative electrode active material carbon microbeads and a modified artificial graphite or a combination thereof, as a conductive agent, carbon black, graphite, carbon fibers and carbon nanotubes, or a mixture of two or more, an intermediate bond an adhesive agent is styrene-butadiene rubber and an aqueous carboxymethyl cellulose binder composition or oily polyvinylidene fluoride homopolymer or a polyvinylidene fluoride - hexafluoropropylene copolymer; lithium salt is lithium hexafluorophosphate, organic the solvent is ethylene carbonate, dimethyl carbonate, ethylmethyl carbonate and a mixture of diethyl carbonate, ethylene carbonate: dimethyl carbonate: ethylmethyl carbonate: diethyl carbonate by weight for 3:4:2 :1; the ternary material is LiNixMnyCo1-x-yO2, where x = 0 ~ 1/3, y = 0 ~ 1/3.
  2. 2.根据权利要求1所述的一种超高倍率锂离子电池,其特征在于,所述正极片的双面敷料面密度为120〜200g/m2,压实密度为3. 0〜3. 8g/m3,所述铝箔的面密度为30g/m2以上。 2. The high rate of the lithium ion battery as claimed in claim 1, characterized in that the surface density of the two-sided positive electrode sheet dressing is 120~200g / m2, a tap density of 3. 0~3. 8g / m3, the surface density of the foil is 30g / m2 or more.
  3. 3.根据权利要求1所述的一种超高倍率锂离子电池,其特征在于,所述负极片的双面敷料面密度为70〜120g/m2,压实密度为1. 2〜1. 8g/m3,所述铜箔的面密度为80g/m2以上。 3. According to a high rate of the lithium ion battery as claimed in claim 1, wherein said negative electrode sheet is a double-sided surface density of the dressing 70~120g / m2, a tap density of 1. 2~1. 8g / m3, density of the copper foil surface 80g / m2 or more.
  4. 4.根据权利要求1所述的一种超高倍率锂离子电池,其特征在于,所述隔膜的孔隙率在45%以上,隔膜厚度为40um以下。 4. According to a high rate of the lithium ion battery as claimed in claim 1, wherein the porosity of the separator is 45% or more, a separator having a thickness of 40um or less.
  5. 5.根据权利要求1所述的一种超高倍率锂离子电池,其特征在于,所述电解液的电导率在llms/cm以上。 According to claim requires a high rate lithium ion battery of claim 1, wherein the conductivity of the electrolyte in llms / cm or more.
  6. 6.根据权利要求1所述的一种超高倍率锂离子电池,其特征在于,所述极耳包括正极极耳和负极极耳,正极极耳为铝极耳,负极极耳为镍极耳、铜镀镍极耳或铜极耳。 6. According to a high rate of the lithium ion battery as claimed in claim 1, wherein said tab includes a positive electrode tab and the negative electrode tab, the positive electrode tab is aluminum tab, the negative electrode tab nickel tab , nickel-plated copper or a copper tab tab.
  7. 7.根据权利要求1所述的一种超高倍率锂离子电池,其特征在于,所述碳黑、石墨、碳纤维和碳纳米管的比表面积为200m2/g以上。 The claim requires a high rate lithium ion battery of claim 1, wherein the specific surface area of ​​the carbon black, graphite, carbon fibers and carbon nanotubes is 200m2 / g or more.
  8. 8.根据权利要求1所述的一种超高倍率锂离子电池,其特征在于,所述中间相碳微球和改性人造石墨的粒径为15um以下,比表面积为1. 5m2/g以上。 8. According to a high rate of the lithium ion battery of claim 1, wherein the particle size of mesophase carbon microbeads and a modified synthetic graphite is 15um or less, the specific surface area was 1. 5m2 / g or more . 2 2
CN 200910021703 2009-03-26 2009-03-26 Ultra-high magnification lithium ion battery CN101510625B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200910021703 CN101510625B (en) 2009-03-26 2009-03-26 Ultra-high magnification lithium ion battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200910021703 CN101510625B (en) 2009-03-26 2009-03-26 Ultra-high magnification lithium ion battery

Publications (2)

Publication Number Publication Date
CN101510625A CN101510625A (en) 2009-08-19
CN101510625B true CN101510625B (en) 2011-01-12

Family

ID=41002927

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200910021703 CN101510625B (en) 2009-03-26 2009-03-26 Ultra-high magnification lithium ion battery

Country Status (1)

Country Link
CN (1) CN101510625B (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101752605B (en) 2010-01-12 2012-10-31 东莞市金源电池科技有限公司 Carbon nanotube lithium battery
CN101872863A (en) * 2010-07-13 2010-10-27 深圳邦凯新能源股份有限公司 Disposable cylindrical polymer lithium-ion battery and manufacturing method thereof
CN102295898B (en) * 2011-06-08 2012-05-30 丁建民 Configuration and coating method of aluminium foil precoat nano conductive carbon primary coat liquid
CN102403537A (en) * 2011-11-30 2012-04-04 南京双登科技发展研究院有限公司 Method for manufacturing lithium iron phosphate battery
CN102403485B (en) * 2011-12-05 2016-05-11 湖北中能锂电科技有限公司 Lithium battery pole slice and the production method thereof of two property active material electrodes
CN104112846A (en) * 2013-04-19 2014-10-22 南通力合新能源有限公司 High-capacity lithium-ion battery used for electric tool and preparation method thereof
CN103579563B (en) * 2013-11-16 2016-04-06 江苏海四达电源股份有限公司 A kind of cylinder fills 2000mAh lithium-ion-power cell and manufacture method soon
CN104600241A (en) * 2014-12-17 2015-05-06 深圳市比克电池有限公司 Lithium ion battery positive plate, preparation method of lithium ion battery positive plate, and lithium ion battery
CN104577193B (en) * 2015-01-09 2016-08-31 潘珊 A kind of method of energy density improving lithium-ion-power cell and lithium-ion-power cell
CN104752671A (en) * 2015-03-09 2015-07-01 芜湖迈特电子科技有限公司 Quick charging back clip mobile battery
CN104900908A (en) * 2015-06-13 2015-09-09 田东 Lithium ion battery with high-rate charge-discharge performance
CN104900844A (en) * 2015-06-18 2015-09-09 田东 Cathode slurry for lithium-ion batteries and preparation method of cathode slurry
CN105070941A (en) * 2015-07-29 2015-11-18 东莞市金辉电源科技有限公司 Lithium ion battery slurry with long service life and preparation method of lithium ion battery slurry
CN105355889B (en) * 2015-11-28 2018-02-23 西安瑟福能源科技有限公司 A kind of high voltage high multiplying power lithium ion battery
CN105428654A (en) * 2015-12-09 2016-03-23 山东精工电子科技有限公司 Negative plate of lithium battery with excellent low-temperature performance
CN106299280A (en) * 2016-08-31 2017-01-04 中航锂电(洛阳)有限公司 A kind of preparation method of high capacity lithium ion battery anode sizing agent
CN106450169A (en) * 2016-08-31 2017-02-22 湖北宇电能源科技股份有限公司 Manufacturing method of negative plate of safety lithium-ion battery
CN106450159A (en) * 2016-12-07 2017-02-22 上海空间电源研究所 Electrodes of lithium ion storage battery for satellite
CN106684349A (en) * 2016-12-20 2017-05-17 惠州市纬世新能源有限公司 Cylindrical high-rate lithium cobaltate flexibly-packaged battery
CN107195960A (en) * 2017-06-16 2017-09-22 江苏三杰新能源有限公司 A kind of cylinder fast charging type high multiplying power lithium ion battery
CN107742727A (en) * 2017-10-13 2018-02-27 江苏海四达电源股份有限公司 Lithium cell cathode material, cathode of lithium battery and preparation method thereof and lithium battery

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004066469A3 (en) 2003-01-22 2004-09-23 Jon Parke Electrolyte for use in phosphate based lithium ion/polymer cells
CN101232096A (en) 2008-02-03 2008-07-30 深圳市比克电池有限公司 Lithium ion battery electric core architecture
CN101394006A (en) 2008-11-07 2009-03-25 唐志建 Valve-free fully sealed lithium ionic cell

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004066469A3 (en) 2003-01-22 2004-09-23 Jon Parke Electrolyte for use in phosphate based lithium ion/polymer cells
CN101232096A (en) 2008-02-03 2008-07-30 深圳市比克电池有限公司 Lithium ion battery electric core architecture
CN101394006A (en) 2008-11-07 2009-03-25 唐志建 Valve-free fully sealed lithium ionic cell

Also Published As

Publication number Publication date
CN101510625A (en) 2009-08-19

Similar Documents

Publication Publication Date Title
US10038182B2 (en) Graphene coating modified electrode plate for lithium secondary battery and method for producing the same
CN1208866C (en) Lithium secondary battery by use of composite material covered with nano surface as active material of positive polar
CN101038960B (en) The non-aqueous electrolyte battery
CN100481609C (en) A super capacitance cell
CN1770515B (en) Anode, cathode material conductive agent for lithium-ion secondary battery and preparation method thereof
CN100422112C (en) Carbon-silicon composite material with spherical nucleocapsid, and its preparing method and use
JP5462445B2 (en) Lithium ion secondary battery
CN1274052C (en) Method for producing lithium ion secondary cell
CN1328818C (en) Mixed aquo-lithium ion battery
CN101320821B (en) Energy storage device with both capacitor and lithium ion battery characteristics and manufacturing method thereof
CN101577323B (en) Sulfenyl anode of lithium-sulfur rechargeable battery and preparation method thereof
CN101373829A (en) Titanium-series cathode active material and preparation method thereof, titanium-series lithium ion power battery
WO2011103705A1 (en) Manufacturing method for long-lived negative electrode and capacitor battery adopting the same
CN1459132A (en) Nonaqueous lighium secondary cell
CN101710619A (en) Electrode plate for lithium ion battery and manufacturing method thereof
CN101436654B (en) Ferric phosphate lithium type safety high power lithium ion battery
CN101183729A (en) High capacity lithium iron phosphate power cell and production technique thereof
CN101409369A (en) Large-capacity high power polymer ferric lithium phosphate power cell and preparation method thereof
CN102479949A (en) Anode active material of lithium ion battery, preparation method thereof and lithium ion battery
CN102769139A (en) Preparation method of high power capacity lithium ion battery cathode material
CN101262078A (en) Quickly chargeable lithium ion battery and its making method
CN101499530B (en) Multi-multiplying power charging-discharging lithium ion battery and method for producing the same
CN102185158A (en) Lithium sulfur battery provided with adsorption layer
CN100546077C (en) Composite positive pole material, battery-super electric capacity energy storage means and preparation method
WO2011103708A1 (en) Capacitor cell with high-specific-energy organic system

Legal Events

Date Code Title Description
C06 Publication
C10 Entry into substantive examination
C14 Grant of patent or utility model
C17 Cessation of patent right