CN107078344B - 锂硫电池及其制造方法 - Google Patents
锂硫电池及其制造方法 Download PDFInfo
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- CN107078344B CN107078344B CN201580060061.XA CN201580060061A CN107078344B CN 107078344 B CN107078344 B CN 107078344B CN 201580060061 A CN201580060061 A CN 201580060061A CN 107078344 B CN107078344 B CN 107078344B
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- lithium
- positive electrode
- sulfur battery
- polymer electrolyte
- gel polymer
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Abstract
本发明涉及锂硫电池,其包含彼此对向布置的正极和负极;位于所述正极和负极之间的隔膜;以及位于所述隔膜和正极之间的凝胶聚合物电解质,其中所述凝胶聚合物电解质包含LiNO3。本发明涉及防止由穿梭效应引起的退化的锂硫电池,并且所述锂硫电池包含被构造成抑制多硫化物类材料传送到负极的凝胶聚合物电解质,从而所述锂硫电池能防止在充放电反应时在正极表面上形成的多硫化物的损失,由此能提高所述锂硫电池的寿命特性。
Description
技术领域
本公开涉及防止由穿梭效应引起的退化的锂硫电池,及其制造方法。本公开涉及包含凝胶聚合物电解质的锂硫电池,所述凝胶聚合物电解质被构造成抑制多硫化物(polysulfide)类材料传送到负极,从而防止在充放电反应期间在正极表面上形成的多硫化物的损失,因此所述锂硫电池具有提高的寿命特性;以及所述锂硫电池的制造方法。
背景技术
尽管锂硫电池通常具有约2V的低放电电位,但是它们作为新一代电动车辆的电池,由于它们优异的安全性、低活性物质成本和2,600Wh/kg的放电容量,仍受到关注。
锂硫电池是二次电池,其通常利用具有硫-硫键的硫系化合物作为正极活性物质并利用碱金属例如锂或能够嵌入和脱嵌金属离子例如锂离子的碳基材料作为负极活性物质,并利用氧化-还原反应在还原反应(放电)期间因硫-硫(S-S)键断裂降低硫(S)的氧化值和在氧化反应(充电)期间因为硫(S)的氧化值增加再次形成硫-硫(S-S)键来储存和发生电能。
然而,这样的锂硫电池的问题在于,由于在充放电反应期间在正极中形成的多硫化锂损失到正极反应区域外部的现象,使寿命特性降低。Li-S电池在充电和放电时形成多硫化物中间体。所述多硫化物在扩散到负极表面的电解质中洗脱,并与负极反应形成不溶性Li2S和Li2S2。用作正极活性物质的硫由于这样的反应而损失并且电池性能衰退,这样的现象称为穿梭效应。
具体而言,在锂硫电池中,硫-硫化学键在放电期间被逐渐切开并转变为硫-锂键,并且中间形成的多硫化锂(Li2Sx,x=8,6,4,2)容易与作为强极性物质的亲水溶剂键合。溶解在电解质中的所述多硫化锂可以LiSx或阴离子(LiSx -,Sx2-)的形式扩散,并且当所述多硫化锂从硫正极扩散时,所述多硫化锂从正极的电化学反应区域逃逸,减少了参与正极中电化学反应的硫的量,由此导致容量损失。还有问题在于,多硫化锂通过连续的充电和放电反应与锂金属负极反应,并且硫化锂(Li2S)固定在锂金属表面上,结果,反应活性降低并且电势特性变劣。
本领域中已经用于解决锂硫电池中多硫化锂损失这种问题的技术主要分成3种技术。第一种方法是通过添加具有将硫吸附于正极混合物的性质的添加剂来延迟正极活性物质流出,在此,所用的添加剂的例子可以包括活性炭纤维、过渡金属硫族化物、氧化铝、二氧化硅等。第二种方法是用包含涂层元素的氢氧化物、羟基氧化物、涂层元素的含氧碳酸盐或涂层元素的羟基碳酸盐的物质对硫表面进行表面处理。第三种方法是将碳材料制备为纳米结构以将多硫化锂约束在纳米结构化的毛细管中。
然而,在上述技术中,所述添加将硫吸附于正极的添加剂的方法具有导电劣化的问题,并且有所述添加剂引起电池副反应的风险,并且所述方法在成本方面也不是优选的。
所述用某种物质对硫表面进行表面处理的技术具有在处理过程期间损失硫的问题,并且也有需要高成本的缺点。
最后,所述将导电剂制备为纳米结构的方法的问题在于,制造过程是复杂的并且需要高成本,由于所述碳纳米结构占据的体积,出现电池体积容量损失,并且此外,所述纳米结构在电池制造过程的轧制过程期间可能失去它的功能。
发明内容
技术问题
本公开涉及提供能够有效阻挡多硫化物的穿梭反应的锂硫电池,及其制造方法。
技术方案
本公开的一种实施方式提供了锂硫电池,其包含彼此对向布置的正极和负极、位于所述正极和负极之间的隔膜、以及位于所述隔膜和正极之间的凝胶聚合物电解质,其中所述凝胶聚合物电解质包含LiNO3。
所述凝胶聚合物电解质可以被涂布在所述正极的表面或所述隔膜的表面上。
所述凝胶聚合物电解质可包含聚合物基体、以及负载在所述聚合物基体上的有机溶剂和锂盐。
所述聚合物基体可以是乙氧基化三羟甲基丙烷三丙烯酸酯单体聚合的聚合物。
本公开的另一种实施方式提供了制造锂硫电池的方法,所述方法包括:将单体、有机溶剂、锂盐和LiNO3混合,将所述混合物涂布在正极或隔膜上,然后将生成物固化以制备位于所述隔膜和所述正极之间的凝胶聚合物电解质。
所述单体可以是乙氧基化三羟甲基丙烷三丙烯酸酯。
所述溶剂可以是选自三乙二醇二甲醚(TEGDME)、二氧戊环(DOL)、二甲氧基乙烷(DME)的任何一种及其混合溶液。
所述锂盐可以是双三氟甲烷磺酰亚胺锂(LiTFSI)。
有益效果
本公开涉及防止由穿梭效应引起的退化的锂硫电池,及其制造方法,并通过包含被构造成抑制多硫化物类材料传送到负极的凝胶聚合物电解质,所述锂硫电池防止在充放电反应期间在正极表面上形成的多硫化物的损失,从而能提高所述锂硫电池的寿命特性。
附图说明
图1是示意性截面图,示出了在正极和隔膜之间形成凝胶聚合物层的本公开锂硫电池。
图2至4是显示在本公开的实施例1和比较例1中制造的锂硫电池的充放电试验结果图,并且图2至4分别是第1周期、第2周期、和第12周期时的结果。
具体实施方式
以下,将详细描述本公开的实施方式,使得本领域技术人员可以容易地实施本公开。然而,本公开可以用各种不同的形式实施,并且不限于在本文中描述的实施方式。
图1是示意性截面图,示出了在正极和隔膜之间形成凝胶聚合物层的本公开锂硫电池。
以下,当参考图1时,根据本公开一种实施方式的锂硫电池包含包含彼此对向布置的正极(120)和负极(150)、位于所述正极(120)和所述负极(150)之间的隔膜(140)、以及位于所述隔膜(140)和所述正极(120)之间的凝胶聚合物电解质(130)。
所述正极(120)可以包含,例如,正极集电器(121)和位于所述正极集电器(121)上并包含正极活性物质和选择性的导电剂和粘合剂的正极活性物质层(122)。
作为正极集电器(121),可以优选使用具有优异的电导率的泡沫铝、泡沫镍等。
另外,正极活性物质层(122)可以包含元素硫(S8)、硫系化合物或其混合物作为所述正极活性物质。所述硫系化合物具体可以是Li2Sn(n≥1)、有机硫化合物、碳-硫聚合物((C2Sx)n:x=2.5至50,n≥2)等。
与所述正极活性物质一起,所述正极活性物质层(122)还可以包含让电子在正极(120)中平稳迁移的导电剂、以及增加所述正极活性物质之间或所述正极活性物质和所述正极集电器(110)之间的粘合强度的粘合剂。
所述导电剂可以是碳基材料例如炭黑、乙炔黑和科琴黑;或导电聚合物例如聚苯胺、聚噻吩、聚乙炔和聚吡咯,并相对于所述正极活性物质层总重量可以优选占5重量%至20重量%。当所述导电剂含量小于5重量%时,从使用所述导电剂得到的提高电导率的效应不明显,而当所述含量大于20重量%时,所述正极活性物质含量相对减少,引起容量特性减退的担忧。
作为所述粘合剂,可以使用聚乙酸乙烯酯、聚乙烯醇、聚环氧乙烷、聚乙烯基吡咯烷酮、烷基化聚环氧乙烷、交联聚环氧乙烷、聚乙烯醚、聚甲基丙烯酸甲酯、聚偏氟乙烯、聚六氟丙烯和聚偏氟乙烯的共聚物(产品名称:Kynar)、聚丙烯酸乙酯、聚四氟乙烯、聚氯乙烯、聚丙烯腈、聚乙烯基吡啶、聚苯乙烯、及其衍生物、掺合物和共聚物等等。所述粘合剂相对于所述正极活性物质层总重量可以优选占5重量%至20重量%。当所述粘合剂含量小于5重量%时,从使用所述粘合剂得到的所述正极活性物质之间或所述正极活性物质和所述集电器之间的粘合强度改善的效应不明显,而当所述含量大于20重量%时,所述正极活性物质含量相对减少,引起容量特性减退的担忧。
这样的正极(120)可以使用常用方法制备,具体而言,可以如下制备:在所述正极集电器上涂布通过在有机溶剂中混合所述正极活性物质、所述导电剂和所述粘合剂而制备的用于形成正极活性物质层的组合物,然后干燥并选择性压延所述生成物。
在此,作为所述有机溶剂,优选使用能够均一分散所述正极活性物质、粘合剂和导电剂并且容易蒸发的溶剂。其具体例子可以包括乙腈、甲醇、乙醇、四氢呋喃、水、异丙醇等。
同时,在所述锂硫电池中,所述负极(150)可以包含选自能够可逆地嵌入或脱嵌锂离子的物质、能够通过与锂离子反应可逆地形成含锂化合物的物质、锂金属和锂合金作为负极活性物质。
作为能够可逆地嵌入或脱嵌锂离子的物质,可以使用通常在锂硫电池中用作碳材料的任何碳基负极活性物质,其具体例子可以包含结晶碳、无定形碳或共同使用这些的物质。另外,能够通过与锂离子反应可逆地形成含锂化合物的物质的典型例子可以包括氧化锡(SnO2)、硝酸钛、硅(Si)等,但不限于此。所述锂金属的合金具体可以是锂与以下金属的合金:Si、Al、Sn、Pb、Zn、Bi、In、Mg、Ga、或Cd。
与所述负极活性物质一起,所述负极(150)可以选择性地进一步包含粘合剂。
所述粘合剂起到敷贴所述负极活性物质、将所述活性物质彼此粘着、将所述活性物质和所述集电器粘着,以及对所述活性物质的膨胀和收缩具有缓冲效应等等的作用。具体而言,所述粘合剂同上所述。
另外,所述负极(150)还可以包含用于负载包含所述负极活性物质和所述粘合剂的负极活性物质层(151)的负极集电器(152)。
所述负极集电器(152)具体可以选自铜、铝、不锈钢、钛、银、钯、镍、其合金和其组合。所述不锈钢可以用碳、镍、钛或银进行表面处理,并且铝-镉合金可以用作所述合金。除其之外,也可以使用碳精、表面用导电剂处理的非导电聚合物、导电聚合物等。
另外,所述负极(150)可以是锂金属箔。
另外,在所述锂硫电池中,隔膜(140)是具有物理隔离电极的功能的物理隔膜,并且可以使用通常用作锂硫电池中隔膜的那些而没有特别的限制,并且特别是,优选在对所述电解质的离子迁移具有低阻抗的同时具有优异的电解质水分截留能力的那些。具体而言,多孔聚合物膜,例如,用聚烯烃基聚合物例如乙烯均聚物、丙烯均聚物、乙烯/丁烯共聚物、乙烯/己烯共聚物和乙烯/甲基丙烯酸酯共聚物制备的多孔聚合物膜可以单独或作为其层叠物使用,或者可以使用常用的多孔无纺布,例如,由高熔点玻璃纤维或聚对苯二甲酸乙二醇酯纤维制成的无纺布,然而,所述隔膜不限于此。
所述锂硫电池还可以包含被浸渍在所述隔膜(140)中的电解质。所述电解质可以包含有机溶剂和锂盐。
具体而言,所述有机溶剂可以是极性溶剂例如芳基化合物、双环醚、非环状碳酸酯、亚砜化合物、内酯化合物、酮化合物、酯化合物、硫酸酯化合物和亚硫酸酯化合物。
更具体而言,所述有机溶剂的例子可以包含1,2-二甲氧基乙烷、1,2-二乙氧基乙烷、1,2-二丁氧基乙烷、二氧戊环(DOL)、1,4-二噁烷、四氢呋喃、2-甲基四氢呋喃、碳酸二甲酯(DMC)、碳酸二乙酯(DEC)、碳酸乙甲酯(EMC)、碳酸甲丙酯(MPC)、碳酸乙丙酯、碳酸二丙酯、碳酸丁乙酯、丙酸乙酯(EP)、甲苯、二甲苯、二甲醚(DME)、二乙醚、三乙二醇单甲醚(TEGME)、二甘醇二甲醚、四甘醇二甲醚、六甲基磷酰三胺、γ丁内酯(GBL)、乙腈、丙腈、碳酯亚乙酯(EC)、碳酸亚丙酯(PC)、N-甲基吡咯烷酮、3-甲基-2-噁唑烷酮、乙酸酯、丁酸酯、丙酸酯、二甲基甲酰胺、环丁砜(SL)、甲基环丁砜、二甲基乙酰胺、二甲亚砜、硫酸二甲酯、乙二醇二乙酸酯、亚硫酸二甲酯、乙二醇亚硫酸酯等等。
在这些之中,可以更优选三乙二醇单甲醚/二氧戊环/二甲醚的混合溶剂。
所述锂盐可以没有特别限制地使用,只要它是锂二次电池中使用的能够提供锂离子的化合物即可。所述锂盐的具体例子可以包含LiPF6、LiClO4、LiAsF6、LiBF4、LiSbF6、LiAlO4、LiAlCl4、LiCF3SO3、LiC4F9SO3、LiN(C2F5SO3)2、LiN(C2F5SO2)2(双(全氟乙磺酰)亚胺锂,BETI)、LiN(CF3SO2)2(双(三氟甲磺酰)亚胺锂,LiTFSI)、LiN(CaF2a+1SO2)(CbF2b+1SO2)(然而,a和b是自然数,并优选1≤a≤20和1≤b≤20)、聚[4,4'-(六氟亚异丙基)二苯氧基]磺酰亚胺锂(LiPHFIPSI)、LiCl、LiI、LiB(C2O4)2等,并且在这些之中,可更优选含磺酰基的酰亚胺锂化合物,例如LiTFSI、BETI或LiPHFIPSI。
另外,所述锂盐相对于所述电解质总重量优选占10重量%至35重量%。当所述锂盐含量小于10重量%时,所述电解质的电导率降低,导致电解质性能减退,而当所述含量大于35重量%时,所述电解质的粘度增加,引起锂离子迁移率降低的问题。
同时,所述锂硫电池包含位于所述隔膜(140)和所述正极(120)之间的凝胶聚合物电解质(130)。所述凝胶聚合物电解质(130)是被负载于聚合物基体上的电解质。
所述聚合物基体没有特别的限制,然而,可以使用包含聚环氧乙烷基聚合化合物、聚有机硅氧烷链、聚氧化烯链等中的至少一个或多个类型的聚合物树脂,并优选地,可以通过聚合乙氧基化三羟甲基丙烷三丙烯酸酯单体来制备。当使用乙氧基化三羟甲基丙烷三丙烯酸酯单体的聚合物作为所述聚合物基体时,因为所述聚合物基体的离子解离能力和所述电解质的浸渍能力有利,可以提高离子电导率。
所述乙氧基化三羟甲基丙烷三丙烯酸酯可以具有200g/mol至1000g/mol、优选300g/mol至700g/mol的重均分子量。当所述乙氧基化三羟甲基丙烷三丙烯酸酯的重均分子量小于200g/mol时,离子电导率可能降低,而当所述重均分子量大于1000g/mol时,物理穿梭抑制效应可能减退。
负载在所述凝胶聚合物电解质(130)中的电解质可以包含有机溶剂和锂盐。对所述有机溶剂和所述锂盐的说明同上,并将不再重复。
所述电解质还包含LiNO3。当所述电解质包含LiNO3时,可提高穿梭抑制效应。所述电解质可以包含相对于所述电解质总重量的1重量%至50重量%、并优选1.5重量%至10重量%的LiNO3。当LiNO3含量小于1重量%时,可能得不到穿梭抑制效应,而当LiNO3含量大于50重量%时,由于LiNO3分解可能发生副反应。所述凝胶聚合物电解质(130)可通过混合所述形成聚合物基体的单体、所述有机溶剂、所述锂盐和LiNO3并固化所述混合物而制备。所述固化可以是热固化或光固化。为此,所述混合物还可包含热固化剂或光固化剂。
所述混合物可包含重量比为10:1至1:1、并优选重量比为4:1至2:1的所述有机溶剂和锂盐。当所述有机溶剂的重量比小于10:1和大于1:1时,在这两种情况下离子电导率可能降低。
所述混合物可包含重量比为99:1至10:90、并优选重量比为95:5至70:30的所述包含锂盐的有机溶剂和所述单体。当所述单体的重量比小于99:1时,可减低穿梭抑制效应,而当所述重量比大于10:90时,电池容量可由于离子电导率的降低而降低。
所述凝胶聚合物电解质(130)可通过将所述混合物制成独立的膜、然后使其介入所述隔膜(140)和正极(120)之间而制备,或通过在所述隔膜(140)或正极(120)上涂布所述混合物并固化所述生成物而制备。
在所述隔膜(140)或正极(120)上涂布所述混合物的方法没有特别的限制,并且可以使用筛网印刷法(screen printing method)、喷涂法、使用刮刀的涂布法、凹版涂布法、浸涂法、丝网印刷法(silk screen method)、涂抹法、利用狭缝口模的涂布法、旋涂法、辊涂法、转移涂布法等。
所述固化可以是热固化或光固化,并且在热固化中,所述固化可以在60℃至200℃、并优选在60℃至150℃进行。当所述固化温度低于60℃时,固化不充分,这降低了物理穿梭抑制效应,而当所述固化温度高于150℃时,由于被浸渍的液体电解质挥发,可降低离子电导率和容量。
优选实施方式
以下,将参考实施例详细地描述本公开,以便具有本公开所属技术领域中常识的人员容易实施本公开。然而,本公开可以用各种不同的形式实施,并且本公开的范围不限于本文中描述的实施例。
[实施例:凝胶聚合物电解质膜的制备以及用其制造电池]
(比较例1)
利用球磨机在乙醇中用硫(平均粒度:40μm)和Super P预先制备复合材料。利用混合器将所制备的复合材料与导电剂和粘合剂混合,制备用于形成正极活性物质层的组合物。在此,碳黑用作导电剂,SBR用作粘合剂,并将它们混合,使得复合材料:导电剂:粘合剂的重量比为75:20:5。所制备的用于形成正极活性物质层的组合物被涂布在铝集电器上,并将生成物干燥而制备正极(正极的能量密度:1.0mAh/cm2)。
另外,制备锂金属箔作为负极。
将乙氧基化三羟甲基丙烷三丙烯酸酯单体与电解质以有机溶剂:单体=90:10的重量比混合的凝胶聚合物电解质前体物质光固化,以形成凝胶聚合物电解质膜,在所述电解质中LiTFSI作为锂盐以LiTFSI:有机溶剂=1:3的重量比混合在TEGDME/DOL/DME(1/1/1vol)的有机溶剂中。
所述凝胶聚合物电解质形成的正极和所述负极彼此对向布置,并将聚乙烯隔膜介于所述正极和负极之间。
然后,将电解质注入外壳中而制造锂硫电池。在此,作为电解质,使用其中LiTFSI作为锂盐在TEGDME/DOL/DME(1/1/1vol)的有机溶剂中以LiTFSI:有机溶剂=1:3的重量比混合的电解质。
(实施例1)
利用球磨机在乙醇中用硫(平均粒度:40μm)和Super P预先制备复合材料。利用混合器将所制备的复合材料与导电剂和粘合剂混合,制备用于形成正极活性物质层的组合物。在此,碳黑用作导电剂,SBR用作粘合剂,并将它们混合,使得复合材料:导电剂:粘合剂的重量比为75:20:5。所制备的用于形成正极活性物质层的组合物被涂布在铝集电器上,并将生成物干燥而制备正极(正极的能量密度:1.0mAh/cm2)。
另外,制备锂金属箔作为负极。
将乙氧基化三羟甲基丙烷三丙烯酸酯单体与电解质以有机溶剂:单体=90:10的重量比混合的凝胶聚合物电解质前体物质涂布在所述正极表面上并光固化,以形成凝胶聚合物电解质膜,在所述电解质中LiTFSI作为锂盐以LiTFSI:有机溶剂=1:3的重量比混合在TEGDME/DOL/DME(1/1/1vol.)的有机溶剂中并添加重量比为所述LiTFSI的1/10的LiNO3。
所述凝胶聚合物电解质形成的正极和所述负极彼此对向布置,并将聚乙烯隔膜介于所述正极和负极之间。
然后,将电解质注入外壳中而制造锂硫电池。在此,作为电解质,使用其中LiTFSI作为锂盐在TEGDME/DOL/DME(1/1/1vol.)的有机溶剂中以LiTFSI:有机溶剂=1:3的重量比混合并添加所述LiTFSI的1/10重量比的LiNO3的电解质。
(实施例2)
除了在实施例1的凝胶聚合物电解质前体物质中将有机溶剂:单体的重量比改为85:15之外,以与实施例1相同的方式形成凝胶聚合物电解质膜。
(实施例3)
除了在实施例1的凝胶聚合物电解质前体物质中将有机溶剂:单体的重量比改为80:20之外,以与实施例1相同的方式形成凝胶聚合物电解质膜。
(实施例4)
除了在实施例1的凝胶聚合物电解质前体物质中将LiTFSI:有机溶剂的重量比改为1:2之外,以与实施例1相同的方式形成凝胶聚合物电解质膜。
[试验例]
在实施例1至4的锂硫电池中,采用SUS作为电极并利用电化学阻抗谱(EIS)法制备硬币电池,测量所制备的电解质的离子电导率,结果在下面的表1中显示。
【表1】
有机溶剂:单体重量比 | 锂盐:有机溶剂重量比 | 离子电导率 | |
实施例1 | 90:10 | 1:3 | 1.1×10<sup>-3</sup>S/cm |
实施例2 | 85:15 | 1:3 | 4.1×10<sup>-4</sup>S/cm |
实施例3 | 80:20 | 1:3 | 6.6×10<sup>-5</sup>S/cm |
实施例4 | 85:15 | 1:2 | 1.8×10<sup>-4</sup>S/cm |
当参考表1时,能够看出实施例1中制备的电解质的离子电导率最优。
另外,对于在实施例1和比较例1中制造的锂硫电池,在1.5V至2.8V电压范围内在0.1C的条件下进行充放电试验。结果在图2中显示。图2至4分别是第1周期、第2周期和第12周期的结果。
当参考图2至4时,看出利用本公开的凝胶聚合物电解质的锂硫电池由于物理抑制穿梭反应的效应,具有提高的库仑效率、初始放电容量、循环性能等。
工业实用性
本公开涉及防止由穿梭效应引起的退化的锂硫电池,及其制造方法。
所述锂硫电池包含凝胶聚合物电解质,所述凝胶聚合物电解质被构造成抑制多硫化物类材料传送到负极,从而防止在充放电反应期间在正极表面上形成的多硫化物的损失,由此提高所述锂硫电池的寿命特性。
Claims (5)
1.一种锂硫电池,其包含:
彼此对向布置的正极和负极;
位于所述正极和所述负极之间的隔膜;和
位于所述隔膜和所述正极之间的凝胶聚合物电解质,
其中所述凝胶聚合物电解质包含相对于所述凝胶聚合物电解质总重量的1重量%至50重量%的LiNO3,
其中所述凝胶聚合物电解质包含聚合物基体、以及负载在所述聚合物基体上的有机溶剂和其他锂盐,
其中所述聚合物基体是通过聚合乙氧基化三羟甲基丙烷三丙烯酸酯单体而得到的聚合物,所述乙氧基化三羟甲基丙烷三丙烯酸酯具有200g/mol至1000g/mol的重均分子量。
2.根据权利要求1所述的锂硫电池,其中所述凝胶聚合物电解质涂布在所述正极的表面或所述隔膜的表面上。
3.一种制造锂硫电池的方法,所述方法包括:
将单体、有机溶剂、LiNO3和其他锂盐混合;以及
将所述混合物涂布在正极或隔膜上,然后将生成物固化以制备位于所述隔膜和所述正极之间的凝胶聚合物电解质,
其中所述单体是乙氧基化三羟甲基丙烷三丙烯酸酯,所述乙氧基化三羟甲基丙烷三丙烯酸酯具有200g/mol至1000g/mol的重均分子量。
4.根据权利要求3所述的制造锂硫电池的方法,其中所述溶剂是选自如下的任意一种:三乙二醇二甲醚(TEGDME)、二氧戊环(DOL)、二甲氧基乙烷(DME)和它们的混合溶液。
5.根据权利要求3所述的制造锂硫电池的方法,其中所述其他锂盐是双三氟甲烷磺酰亚胺锂(LiTFSI)。
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