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公开(公告)号：US20080318128A1
公开(公告)日：2008-12-25
申请号：US11821576
申请日：2007-06-22
CPC分类号： H01M4/134 , H01M4/02 , H01M4/0404 , H01M4/1395 , H01M4/382 , H01M4/40 , H01M4/405 , H01M4/42 , H01M4/46 , H01M10/052 , H01M10/0585 , H01M2004/027 , Y10T29/49112
摘要： Electrochemical cells including anode compositions that may enhance charge-discharge cycling efficiency and uniformity are presented. In some embodiments, alloys are incorporated into one or more components of an electrochemical cell, which may enhance the performance of the cell. For example, an alloy may be incorporated into an electroactive component of the cell (e.g., electrodes) and may advantageously increase the efficiency of cell performance. Some electrochemical cells (e.g., rechargeable batteries) may undergo a charge/discharge cycle involving deposition of metal (e.g., lithium metal) on the surface of the anode upon charging and reaction of the metal on the anode surface, wherein the metal diffuses from the anode surface, upon discharging. In some cases, the efficiency and uniformity of such processes may affect cell performance. The use of materials such as alloys in an electroactive component of the cell have been found to increase the efficiency of such processes and to increase the cycling lifetime of the cell. For example, the use of alloys may reduce the formation of dendrites on the anode surface and/or limit surface development.
摘要翻译： 提出了包括可以增强充电 - 放电循环效率和均匀性的阳极组合物的电化学电池。 在一些实施方案中，将合金结合到电化学电池的一个或多个组分中，这可以增强电池的性能。 例如，合金可以结合到电池的电活性组分（例如电极）中，并且可以有利地提高电池性能的效率。 一些电化学电池（例如，可再充电电池）可能经历充电/放电循环，包括在阳极表面上充电和反应金属（例如，锂金属）时阳极表面沉积金属（例如锂金属），其中金属从 阳极表面。 在某些情况下，这些过程的效率和均匀性可能会影响细胞表现。 已经发现在电池的电活性组分中使用诸如合金的材料可以提高这些工艺的效率并增加电池的循环寿命。 例如，使用合金可以减少阳极表面上的枝晶的形成和/或限制表面发育。
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公开(公告)号：US06465121B1
公开(公告)日：2002-10-15
申请号：US09652249
申请日：2000-08-30
IPC分类号： H01M238
CPC分类号： H01M2/38 , H01M2/0275 , H01M2/36 , H01M6/38 , H01M10/04 , H01M10/0436 , H01M10/0525 , H01M10/4214
摘要： A method for activating electrochemical cells including the steps of sealing the electrochemical cells in a container with an activating electrolyte solvent and salt, treatment steps, such as the application of compression and decompression cycles to the container, for providing good distribution of the electrolyte within the electrochemical cells.
摘要翻译： 一种激活电化学电池的方法，包括用活化电解质溶剂和盐密封容器中的电化学电池的步骤，处理步骤，例如向容器施加压缩和减压循环，以提供电解质在该容器内的良好分布 电化学电池。
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公开(公告)号：US6077624A
公开(公告)日：2000-06-20
申请号：US911476
申请日：1997-08-14
IPC分类号： H01M2/16 , H01M4/62 , H01M6/40 , H01M10/052 , H01M10/0525 , H01M10/0565
CPC分类号： H01M10/052 , H01M10/0565 , H01M2/1653 , H01M4/621 , H01M4/622 , H01M4/623 , H01M10/0525 , H01M6/40
摘要： The methods and compositions of the invention provide two solutions to reduce the reactivity of VDF-based copolymers to lithiated graphite. The two approaches can be used separately or combined. In one embodiment, the relative proportion of the VdF and the other fluorinated monomer (OFM, i.e. HFP) in the copolymer is significantly reduced below conventional formulations in order to reduce the reactivity of the copolymer. In a second approach, the reactivity of the copolymer, over a broad range of monomer VdF:OFM molar ratios, is reduced by deactivating the reactive sites on the copolymer, thereby blocking the ability to undergo undesired reaction during cell operation. These methods and compositions have heretofore not been proposed and are of primary importance in preventing large exothermic reaction which can lead to thermal runaway when conventional polymer formulations are utilized in batteries in the presence of reactive components such as lithiated graphite.
摘要翻译： 本发明的方法和组合物提供了两种降低VDF基共聚物与锂化石墨反应性的方法。 这两种方法可以单独使用或组合使用。 在一个实施方案中，为了降低共聚物的反应性，VdF和其它氟化单体（OFM，即HFP）在共聚物中的相对比例显着降低到低于常规配方。 在第二种方法中，通过使共聚物上的反应性位点失活，共聚物在宽范围的单体VdF：OFM摩尔比下的反应性降低，从而阻止在电池操作过程中发生不希望的反应的能力。 迄今为止尚未提出这些方法和组合物，并且在防止在诸如锂化石墨的反应性组分的存在下将常规聚合物制剂用于电池中时可导致热失控的大的放热反应是最重要的。
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公开(公告)号：US20100266899A1
公开(公告)日：2010-10-21
申请号：US12828472
申请日：2010-07-01
申请人： Jeremy Barker , M. Yazid Saidi , Tracy E. Kelley
发明人： Jeremy Barker , M. Yazid Saidi , Tracy E. Kelley
CPC分类号： H01M4/525 , H01M4/13 , H01M4/364 , H01M4/505 , H01M4/582 , H01M4/5825 , H01M10/0525
摘要： An electrode active material comprising two or more groups of particles having differing chemical compositions, wherein each group of particles comprises a material selected from: (a) materials of the formula A2eM2fOg; and (b) materials of the formula A3hMniO4; wherein (i) A2, and A3 are independently selected from the group consisting of Li, Na, K, and mixtures thereof, 0
摘要翻译： 包含两组或更多组具有不同化学组成的颗粒的电极活性材料，其中每组颗粒包含选自以下的材料：（a）式A2eM2fOg的材料; 和（b）式为A3hMniO4的材料; 其中（i）A2和A3独立地选自由Li，Na，K及其混合物组成的组，e＆lt; e1; 6和h＆nlE; 2.0; （ii）M2是一种或多种金属，其包含选自Fe，Co，Ni，Mo，V，Zr，Ti，Mo和Cr中的至少一种金属和1＆lt; lE; f＆nlE; 6; （iii）0
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公开(公告)号：US07041239B2
公开(公告)日：2006-05-09
申请号：US10406890
申请日：2003-04-03
申请人： Jeremy Barker , M. Yazid Saidi , Tracy E. Kelley
发明人： Jeremy Barker , M. Yazid Saidi , Tracy E. Kelley
IPC分类号： H01B1/08
CPC分类号： H01M4/525 , H01M4/13 , H01M4/364 , H01M4/505 , H01M4/582 , H01M4/5825 , H01M10/0525
摘要： Electrode active materials comprising two or more groups of particles having differing chemical compositions, wherein each group of particles comprises a material selected from:(a) materials of the formula A1aM1b(XY4)cZd; and(b) materials of the formula A2eM2fOg; andwherein(i) A1, A2, and A3 are Li, Na, or K;(ii) M1 and M3 comprise a transition metal;(iv) XY4 a phosphate or similar moiety; and(v) Z is OH, or halogen.In a preferred embodiment, A2eM3fOg is A3hMniO4 having an inner and an outer region, wherein the inner region comprises a cubic spinel manganese oxide, and the outer region comprises a manganese oxide enriched in Mn+4 relative to the inner region. In a preferred embodiment, the compositions also comprise a basic compound.
摘要翻译： 包含两组或更多组具有不同化学组成的颗粒的电极活性材料，其中每组颗粒包含选自以下的材料：（a）式A的材料 （XY 4）C 1 C 1 H 2 O 2（X 4） 和（b）式A的物质 >; 并且其中（i）A 1，A 2和A 3是Li，Na或K; （ii）M 1和M 3 3包含过渡金属; （iv）磷酸酯或类似部分的XY 4; 和（v）Z是OH或卤素。 在一个优选的实施方案中，A 2和A 3是C 具有内部和外部区域的内部区域包括立方尖晶石 锰氧化物，外部区域包含相对于内部区域富含Mn + 4+的氧化锰。 在优选的实施方案中，组合物还包含碱性化合物。
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公开(公告)号：US06322744B1
公开(公告)日：2001-11-27
申请号：US09251296
申请日：1999-02-17
IPC分类号： C01D1502
CPC分类号： H01M4/505 , H01M4/366 , H01M10/0525 , Y10T428/2991
摘要： The invention provides an electrochemically active material comprising particles of spinel lithium manganese oxide having on the surface of each particle cationic metal species bound to the spinel at anionic sites of the particle surface; where the cationic metal species includes a metal selected from the group consisting of transition metals, non-transition metals having a +3 valence state, and mixtures thereof. The active material is characterized by a reduced surface area and increased capacity expressed in milliamp hour per gram as compared to the spinel alone.
摘要翻译： 本发明提供了一种电化学活性材料，其包含尖晶石锂锰氧化物颗粒，其在颗粒表面的阴离子位点处与每个颗粒阳离子金属物质的表面结合到尖晶石; 其中阳离子金属物质包括选自过渡金属，具有+3价态的非过渡金属及其混合物的金属。 与单独的尖晶石相比，活性材料的特征在于减少的表面积和增加的容量以毫安时/克表示。
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公开(公告)号：US20110229765A1
公开(公告)日：2011-09-22
申请号：US13150401
申请日：2011-06-01
申请人： Jeremy Barker , M. Yazid Saidi , Tracy E. Kelley
发明人： Jeremy Barker , M. Yazid Saidi , Tracy E. Kelley
CPC分类号： H01M4/525 , H01M4/13 , H01M4/364 , H01M4/505 , H01M4/582 , H01M4/5825 , H01M10/0525
摘要： An electrode active material comprising two or more groups of particles having differing chemical compositions, wherein each group of particles comprises a material selected from: (a) materials of the formula A2eM2fOg; and (b) materials of the formula A3hMniO4; wherein (i) A2, and A3 are independently selected from the group consisting of Li, Na, K, and mixtures thereof, 0
摘要翻译： 包含两组或更多组具有不同化学组成的颗粒的电极活性材料，其中每组颗粒包含选自以下的材料：（a）式A2eM2fOg的材料; 和（b）式为A3hMniO4的材料; 其中（i）A2和A3独立地选自由Li，Na，K及其混合物组成的组，e＆lt; e1; 6和h＆nlE; 2.0; （ii）M2是一种或多种金属，其包含选自Fe，Co，Ni，Mo，V，Zr，Ti，Mo和Cr中的至少一种金属和1＆lt; lE; f＆nlE; 6; （iii）0
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公开(公告)号：US06596435B2
公开(公告)日：2003-07-22
申请号：US09962574
申请日：2001-09-25
IPC分类号： H01M450
CPC分类号： H01M4/505 , H01M4/366 , H01M10/0525 , Y10T428/2991
摘要： The invention provides an electrochemically active material comprising particles of spinel lithium manganese oxide having on the surface of each particle cationic metal species bound to the spinel at anionic sites of the particle surface; where the cationic metal species includes a metal selected from the group consisting of transition metals, non-transition metals having a +3 valence state, and mixtures thereof. The active material is characterized by a reduced surface area and increased capacity expressed in milliamp hour per gram as compared to the spinel alone.
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