CN110998917A - 用于制备用于全固态电池的电极的方法 - Google Patents
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- 239000007787 solid Substances 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title description 3
- 238000005245 sintering Methods 0.000 claims abstract description 78
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 73
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 64
- 239000011593 sulfur Substances 0.000 claims abstract description 64
- 239000000203 mixture Substances 0.000 claims abstract description 42
- 239000000843 powder Substances 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 30
- 239000010936 titanium Substances 0.000 claims abstract description 28
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 26
- 239000007784 solid electrolyte Substances 0.000 claims abstract description 11
- 238000002441 X-ray diffraction Methods 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims abstract description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 14
- 239000007789 gas Substances 0.000 claims description 13
- 239000005864 Sulphur Substances 0.000 claims description 9
- 229910052786 argon Inorganic materials 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 230000008020 evaporation Effects 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 4
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- 229910052744 lithium Inorganic materials 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 230000001747 exhibiting effect Effects 0.000 abstract description 2
- 239000011521 glass Substances 0.000 description 9
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 6
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 3
- VKCLPVFDVVKEKU-UHFFFAOYSA-N S=[P] Chemical compound S=[P] VKCLPVFDVVKEKU-UHFFFAOYSA-N 0.000 description 3
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 3
- 229910003092 TiS2 Inorganic materials 0.000 description 2
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 101100317222 Borrelia hermsii vsp3 gene Proteins 0.000 description 1
- 229910001216 Li2S Inorganic materials 0.000 description 1
- 229910012631 LiTi2 Inorganic materials 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- DXHPZXWIPWDXHJ-UHFFFAOYSA-N carbon monosulfide Chemical compound [S+]#[C-] DXHPZXWIPWDXHJ-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- GLNWILHOFOBOFD-UHFFFAOYSA-N lithium sulfide Chemical compound [Li+].[Li+].[S-2] GLNWILHOFOBOFD-UHFFFAOYSA-N 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- CYQAYERJWZKYML-UHFFFAOYSA-N phosphorus pentasulfide Chemical compound S1P(S2)(=S)SP3(=S)SP1(=S)SP2(=S)S3 CYQAYERJWZKYML-UHFFFAOYSA-N 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- CFJRPNFOLVDFMJ-UHFFFAOYSA-N titanium disulfide Chemical compound S=[Ti]=S CFJRPNFOLVDFMJ-UHFFFAOYSA-N 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
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Abstract
一种用于制备作为用于全固态电池的包含钛和硫的电极的烧结组分的方法(100),该方法包括:混合粉末(102),以获得包含钛和硫的粉末混合物;压制(106)含有粉末混合物的组分;在包括在200Pa与0.2MPa之间的硫分压下对组分进行烧结(108),以获得包含钛和硫的中间烧结组分;以及在等于或小于150Pa的硫分压下,在包括在200℃与400℃之间的温度平台下对中间烧结组分进行烧结(114),以获得包含钛和硫的烧结组分;在使用CuKα线进行的X射线衍射测量中,固体电解质在以下位置处表现出峰值:2θ=15.08°(±0.50°)、15.28°(±0.50°)、15.92°(±0.50°)、17.5°(±0.50°)、18.24°(±0.50°)、20.30°(±0.50°)、23.44°(±0.50°)、24.48°(±0.50°)以及26.66°(±0.50°)。
Description
技术领域
本公开内容涉及全固态电池,并且更具体地涉及包括包含硫的固体电解质和/或电极的固态电池。
背景技术
全固态电池提供了拥有具有高能量密度的电池组的可能性。
研究了用于全固态电池的固体电解质和/或电极的不同材料。特别感兴趣的是包含钛和硫并且在使用CuKα线进行的X射线衍射测量中在以下位置处表现出峰值的材料:2θ=15.08°(±0.50°)、15.28°(±0.50°)、15.92°(±0.50°)、17.5°(±0.50°)、18.24°(±0.50°)、20.30°(±0.50°)、23.44°(±0.50°)、24.48°(±0.50°)以及26.66°(±0.50°)。这些材料通常表现出良好的锂离子电导率但是表现出低的电子电导率。
然而,对于作为固体电解质和/或电极的应用仍然需要增加这种材料的电子电导率。
发明内容
因此,根据本公开内容的实施方式,提供了一种用于制备作为用于全固态电池的包含钛和硫的固体电解质和/或电极的烧结组分的方法。该方法包括:
-混合粉末,以获得包含钛和硫的粉末混合物;
-压制含有粉末混合物的组分;以及
-在包括在200Pa与0.2MPa之间的硫分压下对组分进行烧结,以获得包含钛和硫的中间烧结组分;
-在等于或小于150Pa的硫分压下,在包括在200℃与400℃之间的温度平台下对中间烧结组分进行烧结,以获得包含钛和硫的烧结组分;
其中,在使用CuKα线进行的X射线衍射测量中,烧结组分在以下位置处表现出峰值:2θ=15.08°(±0.50°)、15.28°(±0.50°)、15.92°(±0.50°)、17.5°(±0.50°)、18.24°(±0.50°)、20.30°(±0.50°)、23.44°(±0.50°)、24.48°(±0.50°)以及26.66°(±0.50°)。
根据本公开内容的实施方式,提供了一种用于制备作为用于全固态电池的包含钛和硫的固体电解质和/或电极的烧结组分的方法。该方法包括:
-混合粉末,以获得包含钛和硫的粉末混合物;
-压制含有粉末混合物的组分;以及
-在包括在200Pa与0.2MPa之间的硫分压下对组分进行烧结(108),以获得包括钛和硫的中间烧结组分;
-在温度梯度下对中间烧结组分进行烧结,以获得烧结组分,所述中间烧结组分的最高温度包括在200℃与400℃之间;
其中,在使用CuKα线进行的X射线衍射测量中,烧结组分在以下位置处表现出峰值:2θ=15.08°(±0.50°)、15.28°(±0.50°)、15.92°(±0.50°)、17.5°(±0.50°)、18.24°(±0.50°)、20.30°(±0.50°)、23.44°(±0.50°)、24.48°(±0.50°)以及26.66°(±0.50°)。
在使用CuKα线进行的X射线衍射测量中在以下位置处表现出峰值的烧结组分,即固体电解质和/或电极,通常表现出良好的锂离子电导率但是表现出低的电子电导率:2θ=15.08°(±0.50°)、15.28°(±0.50°)、15.92°(±0.50°)、17.5°(±0.50°)、18.24°(±0.50°)、20.30°(±0.50°)、23.44°(±0.50°)、24.48°(±0.50°)以及26.66°(±0.50°)。
通过提供这样的方法,由于在包括在200Pa(帕斯卡)与0.2MPa之间的硫分压下对组分进行烧结,因此可以获得如下中间烧结组分:其中硫的蒸发在烧结期间受到限制并且其中中间烧结组分的堆积密度增加。实际上,硫的蒸发在烧结期间受到限制,并且中间烧结组分的堆积密度增加。因此,降低了中间烧结组分的孔隙度。
由于在等于或小于150Pa的硫分压下在包括在200℃与400℃之间的温度平台下对中间烧结组分进行烧结,或者替选地,由于在温度梯度下对中间烧结组分进行烧结,中间烧结组分的最高温度包括在200℃与400℃之间,因此获得了通过固体电解质和/或电极的电子电导率的增加。
通过在等于或小于150Pa的硫分压下在包括在200℃与400℃之间的温度平台下对中间烧结组分进行烧结,或者通过在温度梯度下对中间烧结组分进行烧结,中间烧结组分的最高温度包括在200℃与400℃之间,因此存在于中间烧结组分中的一部分硫蒸发,并且因此一部分钛从Ti4+还原至Ti3+或更低,即Ti2+或甚至Ti+。由于钛的还原,因此增加了烧结组分的电子电导率。
在一些实施方式中,等于或小于150Pa的硫分压是通过使用惰性气体或氮气冲洗中间烧结组分获得的。
在一些实施方式中,等于或小于150Pa的硫分压是通过连续抽空存在于包含中间烧结组分的密闭容器中的气体获得的。
在一些实施方式中,在烧结期间在温度梯度下将中间烧结组分密封在密闭容器中。
在一些实施方式中,烧结组分包含XTi2(PS4)3,X为锂(Li)、钠(Na)或银(Ag)。
在一些实施方式中,该方法包括使粉末混合物非晶化以获得非晶态的粉末混合物的步骤。
在一些实施方式中,在包括在200Pa与0.2MPa之间的硫分压下进行烧结包括等于或小于500℃,优选地等于或小于400℃的烧结平台温度。
粉末混合物是非晶态的,粉末混合物更具反应性,并且可以在等于或小于500℃的温度下获得粉末混合物的烧结。
在一些实施方式中,在包括在200Pa与0.2MPa之间的硫分压下进行烧结包括等于或小于20小时,优选地等于或小于10小时的烧结平台时间。
粉末混合物是非晶态的,粉末混合物更具反应性,并且可以利用等于或小于20小时,优选地等于或小于10小时的烧结平台时间来获得粉末混合物的烧结。
在一些实施方式中,包括在200Pa与0.2MPa之间的硫分压是通过蒸发固体硫获得的。
在一些实施方式中,在等于或小于100Pa,优选地等于或小于50Pa的压力下在氩气下将组分放置在容器中并且密封。
在一些实施方式中,包括在200Pa与0.2MPa之间的硫分压是从含硫气体获得的。
含硫气体可以是诸如硫化氢、硫化碳或硫化磷的气体。
在一些实施方式中,在等于或大于25MPa,优选地等于或大于50MPa,更优选地等于或大于75MPa,并且等于或小于500MPa,优选地等于或小于400MPa,更优选地等于或小于300MPa的压力下压制组分。
在一些实施方式中,在两个烧结步骤之间,研磨和压制中间烧结组分。
在一些实施方式中,在等于或大于25MPa,优选地等于或大于50MPa,更优选地等于或大于75MPa,并且等于或小于500MPa,优选地等于或小于400MPa,更优选地等于或小于300MPa的压力下压制所研磨和压制的中间烧结组分。
除非其中另有矛盾,否则旨在将上面描述的元素和说明书内的元素进行组合。
应当理解,前面的一般描述和下面的详细描述两者都仅是示例性和说明性的,并且不限制要求保护的本公开内容。
并入本说明书中并构成本说明书的一部分的附图示出了本公开内容的实施方式,并且与描述一起用于解释其原理。
附图说明
图1示出了根据本公开内容的实施方式的方法的流程图;
图2示出了根据本公开内容的样品的X射线衍射光谱;
图3示出了比较样品的X射线衍射光谱;
图4和图5示出了根据频率的电导率的实部。
具体实施方式
现在将详细地参考本公开内容的示例性实施方式,其示例在附图中示出。在整个附图中,将尽可能使用相同的附图标记指代相同或相似的部件。
图1示出了根据本公开内容的实施方式的方法的流程图的表示。
样品1是根据本公开内容的样品,并且样品2是比较样品。
样品1和样品2均为LiTi2(PS4)3固体电解质或电极。
每个实验都是在氩气下、或在真空下或在硫气氛下进行的,以不与空气接触。
将参照图1采用样品1来描述用于制备用于全固态电池的包含钛和硫的固体电解质和/或电极的方法100。
在步骤102中,将0.0396g(克)的Li2S、0.5745g的P2S5和0.3859g的TiS2混合在一起,以获得粉末混合物。Li2S(99%、硫化锂、Sigma-)、P2S5(98%、五硫化二磷、Sigma-)和TiS2(99.9%、二硫化钛、Sigma-)是具有等于或大于99质量%的纯度的粉末。
在作为非强制性步骤的步骤104中,使粉末混合物在行星式研磨设备(Fritsch、P7)中非晶化。将粉末混合物在氩气下置于具有直径为10mm(毫米)的18个锆球的45mL(毫升)容量的锆罐中。使粉末混合物以370rpm(转每分钟)非晶化达40小时,以获得非晶态的粉末混合物。
在步骤106中,在等于或大于25MPa,优选地等于或大于50MPa,更优选地等于或大于75MPa,并且等于或小于500MPa,优选地等于或小于400MPa,更优选地等于或小于300MPa的压力下压制非晶态的粉末混合物。
例如,在200MPa下压制100mg的非晶态的粉末混合物,以形成组分。
在步骤108中,在包括在150Pa与0.2MPa之间的硫分压下对组分进行烧结,以获得包含钛和硫的中间烧结组分。
例如,在非常低的压力(例如30Pa)下在氩气下将100mg组分与来自Sigma-的5mg硫片(99.99%)放入玻璃管中,并且密封该玻璃管。在400℃(摄氏度)的平台温度下对组分进行烧结达8小时的平台温度时间,以获得包含钛和硫的中间烧结组分。在加热时,在密封的玻璃管中固体硫片允许包括在200Pa与0.2MPa之间的硫分压。
替选地,在密闭的容器例如密封的玻璃管中或具有气体冲洗(gas flush)的开口容器中可以从含硫气体例如硫化氢(H2S)、二硫化碳(CS2)或硫化磷(PxSy,例如P4S3、P2S3或P2S5)获得包括在150Pa与0.2MPa之间的硫分压。
然后,在等于或小于150Pa的硫分压下,在包括在200℃与400℃之间的温度平台下对中间烧结组分进行烧结(步骤114),以获得包含钛和硫的烧结组分。
例如,可以在氩气气氛下在开口容器中对中间烧结组分进行烧结,即,在300℃的温度平台下使用氩气对中间烧结组分冲洗达8小时的温度平台时间。可以使用其他气体,例如氮气、氦气、氖气和氙气。
在两个烧结步骤108、114之间,可以研磨(步骤110)和压制(步骤112)中间烧结组分。这些步骤110、112是可选的。
在步骤106和112中使用的压力可以不同。在步骤106和112中使用的压力可以相等。然而,在两个步骤106和112中的压力都等于或大于25MPa,优选地等于或大于50MPa,更优选地等于或大于75MPa,并且等于或小于500MPa,优选地等于或小于400MPa,更优选地等于或小于300MPa。
例如,在步骤106中的压力可以等于200MPa,并且在步骤112中的压力可以等于100MPa。
除了在小于150Pa的硫分压下执行所述组分和中间烧结组分的烧结之外,用于制备样品2的方法与用于制备样品1的方法类似。
例如通过在非常低的压力(例如30Pa)下在氩气下将样品2的组分和中间烧结组分密封在玻璃管中,在或小于150Pa的硫分压下,将所述组分和中间烧结组分两者在400℃下烧结达8小时。因此,样品2的烧结组分已经在小于150MPa的硫分压下在400℃下烧结达16小时。
图2和图3分别示出了样品1和样品2的X射线衍射光谱。如在图3和图4上可以看到的,在使用CuKα线进行的X射线衍射测量中,样品1和样品2两者在以下位置处表现出峰值:2θ=15.08°(±0.50°)、15.28°(±0.50°)、15.92°(±0.50°)、17.5°(±0.50°)、18.24°(±0.50°)、20.30°(±0.50°)、23.44°(±0.50°)、24.48°(±0.50°)以及26.66°(±0.50°)。
样品1和样品2分别夹在两个SUS集电器(不锈钢、SUS301)之间。使用由泰邦生物(Biologic)制造的阻抗增益相位分析仪来测量样品1和样品2两者的阻抗。使用由泰邦生物(Biologic)制造的VMP3作为频率响应分析仪(FRA)来测量。测量以其中交流电压为10mV(毫伏)并且频率范围在1Hz(赫兹)至1MHz之间的高频范围开始。
样品1的电子电导率等于6.1·10-5S/cm(西门子每厘米),而样品2的离子电导率等于4.6·10-10S/cm。
因此,在包括在200Pa与0.2MPa之间的硫分压下烧结,然后进行使硫能够蒸发的烧结,显著提高了烧结组分的电子电导率。
图4和图5分别示出了样品1和样品2的根据频率(以Hz为单位)的电导率(以S/cm为单位)的实部。
样品2显示出明显的温度依赖性,而直到等于-60℃的温度样品1显示出非常小的温度依赖性。由于离子电导率强烈依赖于温度,因此样品1的根据频率的电导率的实部的准非依赖性显示出样品1的烧结组分表现出电子电导率,电导率是离子电导率和电子电导率的总和。
尽管样品1是通过执行所有步骤102至114获得的,但是在执行或不执行步骤104和/或在执行或不执行步骤110和112的情况下,都可以获得类似的结果。
替选地,可以通过连续抽空存在于包含中间烧结组分的密封容器中的气体来获得等于或小于150Pa的硫分压。
替选地,可以在温度梯度下对中间烧结组分进行烧结(步骤114)以获得烧结组分,中间烧结组分的最高温度包括在200℃与400℃之间。
例如,可以在非常低的压力例如30Pa下在氩气下利用温度梯度将中间烧结组分密封在玻璃管中达8小时的烧结时间,中间烧结组分的一侧为300℃,并且中间烧结组分的另一侧为100℃。
当粉末混合物未被非晶化时,即,当不执行步骤104时,在步骤106中,在等于或大于25MPa,优选地等于或大于50MPa,更优选地等于或大于75MPa,并且等于或小于500MPa,优选地等于或小于400MPa,更优选地等于或小于300MPa的压力下压制粉末混合物。
例如,在200MPa下压制100mg粉末混合物,以形成组分。
在步骤108中,在包括在200Pa与0.2MPa之间的硫分压下对组分进行烧结,以获得包含硫的中间烧结组分。
例如,在非常低的压力(例如30Pa)下在氩气下将100mg组分与来自Sigma-的5mg硫片(99.99%)放入玻璃管中,并且密封该玻璃管。在500℃(摄氏度)以上的平台温度例如750℃下对组分进行烧结达10小时的平台温度时间,以获得包含钛和硫的中间烧结组分。
替选地,在密闭的容器例如密封的玻璃管中或具有气体冲洗的开口容器中可以从含硫气体例如硫化氢(H2S)、二硫化碳(CS2)或硫化磷(PxSy,例如P4S3、P2S3或P2S5)获得包括在200Pa与0.2MPa之间的硫分压。
用于中间烧结组分的烧结114的条件与上面相同。
在包括权利要求书的整个描述中,除非另外说明,否则术语“包括”应当被理解为与“包括至少一个”同义。另外,除非另外说明,否则在包括权利要求书的描述中阐述的任何范围应当被理解为包括其端值。对于所描述的元素的特定值应当被理解为在本领域技术人员已知的可接受的制造或工业公差内,并且对术语“基本上”和/或“大约”和/或“通常”的任何使用应当被理解为:均在可接受的公差范围内。
尽管本文已经参考特定实施方式描述了本公开内容,但是应当理解,这些实施方式仅仅是本公开内容的原理和应用的说明。
旨在将说明书和示例仅视为示例性的,其中本公开内容的真实范围由所附权利要求指示。
Claims (15)
1.一种用于制备作为用于全固态电池的包含钛和硫的固体电解质和/或电极的烧结组分的方法(100),所述方法包括:
-混合粉末(102),以获得包含钛和硫的粉末混合物;
-压制(106)含有所述粉末混合物的组分;以及
-在包括在200Pa与0.2MPa之间的硫分压下对所述组分进行烧结(108),以获得包含钛和硫的中间烧结组分;
-在等于或小于150Pa的硫分压下,在包括在200℃与400℃之间的温度平台下对所述中间烧结组分进行烧结(114),以获得包含钛和硫的烧结组分;
其中,在使用CuKα线进行的X射线衍射测量中,所述烧结组分在以下位置处表现出峰值:2θ=15.08°(±0.50°)、15.28°(±0.50°)、15.92°(±0.50°)、17.5°(±0.50°)、18.24°(±0.50°)、20.30°(±0.50°)、23.44°(±0.50°)、24.48°(±0.50°)以及26.66°(±0.50°)。
2.根据权利要求1所述的方法(100),其中,等于或小于150Pa的硫分压是通过使用惰性气体或氮气冲洗所述中间烧结组分获得的。
3.根据权利要求1或2所述的方法(100),其中,等于或小于150Pa的硫分压是通过连续抽空存在于包含所述中间烧结组分的密闭容器中的气体获得的。
4.一种用于制备作为用于全固态电池的包含钛和硫的固体电解质和/或电极的烧结组分的方法(100),所述方法包括:
-混合粉末(102),以获得包含钛和硫的粉末混合物;
-压制(106)含有所述粉末混合物的组分;以及
-在包括在200Pa与0.2MPa之间的硫分压下对所述组分进行烧结(108),以获得包含钛和硫的中间烧结组分;
-在温度梯度下对所述中间烧结组分进行烧结(114),以获得烧结组分,所述中间烧结组分的最高温度包括在200℃与400℃之间;
其中,在使用CuKα线进行的X射线衍射测量中,所述烧结组分在以下位置处表现出峰值:2θ=15.08°(±0.50°)、15.28°(±0.50°)、15.92°(±0.50°)、17.5°(±0.50°)、18.24°(±0.50°)、20.30°(±0.50°)、23.44°(±0.50°)、24.48°(±0.50°)以及26.66°(±0.50°)。
5.根据权利要求4所述的方法(100),其中,在烧结期间在所述温度梯度下将所述中间烧结组分密封在密闭容器中。
6.根据权利要求1至5中任一项所述的方法(100),其中,所述烧结组分包含XTi2(PS4)3,X为锂(Li)、钠(Na)或银(Ag)。
7.根据权利要求1至6中任一项所述的方法(100),所述方法包括使所述粉末混合物非晶化以获得非晶态的粉末混合物的步骤(104)。
8.根据权利要求7所述的方法(100),其中,在包括在200Pa与0.2MPa之间的硫分压下进行烧结(108)包括等于或小于500℃,优选地等于或小于400℃的烧结平台温度。
9.根据权利要求7或8所述的方法(100),其中,在包括在200Pa与0.2MPa之间的硫分压下进行烧结(108)包括等于或小于20小时,优选地等于或小于10小时的烧结平台时间。
10.根据权利要求1至9中任一项所述的方法(100),其中,在包括在200Pa与0.2MPa之间的所述硫分压是通过蒸发固体硫获得的。
11.根据权利要求10所述的方法(100),其中,在等于或小于100Pa,优选地等于或小于50Pa的压力下在氩气下将所述组分放置在容器中并且密封。
12.根据权利要求1至11中任一项所述的方法(100),其中,在包括在200Pa与0.2MPa之间的硫分压是从含硫气体获得的。
13.根据权利要求1至12中任一项所述的方法(100),其中,在等于或大于25MPa,优选地等于或大于50MPa,更优选地等于或大于75MPa,并且等于或小于500MPa,优选地等于或小于400MPa,更优选地等于或小于300MPa的压力下压制(106)所述组分。
14.根据权利要求1至13中任一项所述的方法(100),其中,在两个烧结步骤(108,114)之间,研磨(110)和压制(112)所述中间烧结组分。
15.根据权利要求14所述的方法(100),其中,在等于或大于25MPa,优选地等于或大于50MPa,更优选地等于或大于75MPa,并且等于或小于500MPa,优选地等于或小于400MPa,更优选地等于或小于300MPa的压力下压制(112)所研磨和压制的中间烧结组分。
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