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1. 发明申请

US20140370387A1 SILICON-SILICON OXIDE-CARBON COMPOSITES FOR LITHIUM BATTERY ELECTRODES AND METHODS FOR FORMING THE COMPOSITES 审中-公开
标题翻译：用于锂电池电极的硅氧化硅氧化物复合材料及形成复合材料的方法
公开(公告)号：US20140370387A1
公开(公告)日：2014-12-18
申请号：US13917472
申请日：2013-06-13
申请人： Envia Systems, Inc.
发明人： Yogesh Kumar Anguchamy , Haixia Deng , Yongbong Han , Charan Masarapu , Sujeet Kumar , Herman A. Lopez
IPC分类号： H01M4/36 , H01M4/583 , H01M4/04 , H01M4/485
CPC分类号： H01M4/364 , H01M4/04 , H01M4/485 , H01M4/583 , H01M10/052
摘要： Composite silicon based materials are described that are effective active materials for lithium ion batteries. The composite materials comprise processed, e.g., high energy mechanically milled, silicon suboxide and graphitic carbon in which at least a portion of the graphitic carbon is exfoliated into graphene sheets. The composite materials have a relatively large surface area, a high specific capacity against lithium, and good cycling with lithium metal oxide cathode materials. The composite materials can be effectively formed with a two step high energy mechanical milling process. In the first milling process, silicon suboxide can be milled to form processed silicon suboxide, which may or may not exhibit crystalline silicon x-ray diffraction. In the second milling step, the processed silicon suboxide is milled with graphitic carbon. Composite materials with a high specific capacity and good cycling can be obtained in particular with balancing of the processing conditions.
摘要翻译：描述了作为锂离子电池的有效活性材料的复合硅基材料。复合材料包括加工的，例如高能机械研磨的低氧化硅和石墨碳，其中至少一部分石墨碳被剥离成石墨烯片。复合材料具有相当大的表面积，对锂的高比容量，以及与锂金属氧化物阴极材料的良好循环。复合材料可以通过两步高能机械研磨工艺有效地形成。在第一次研磨过程中，可以研磨低氧化硅粉末以形成经处理的低氧化硅，其可以或可以不显示晶体硅x射线衍射。在第二研磨步骤中，处理的硅氧化物用石墨碳研磨。特别是在加工条件平衡的情况下，可以获得具有高比容量和良好循环性能的复合材料。

2. 发明申请

US20140308585A1 SILICON-BASED ACTIVE MATERIALS FOR LITHIUM ION BATTERIES AND SYNTHESIS WITH SOLUTION PROCESSING 有权
标题翻译：用于锂离子电池的硅基活性材料和具有溶液处理的合成
公开(公告)号：US20140308585A1
公开(公告)日：2014-10-16
申请号：US13864212
申请日：2013-04-16
申请人： Envia Systems, Inc.
发明人： Yongbong Han , Charan Masarapu , Haixia Deng , Yogesh Kumar Anguchamy , Subramanian Venkatachalam , Herman A. Lopez
IPC分类号： H01M4/36 , C04B35/14 , C01B33/021
CPC分类号： H01M4/362 , C01B33/113 , C01B33/18 , C04B35/14 , C04B35/532 , C04B35/571 , C04B35/806 , C04B2235/425 , C04B2235/428 , C04B2235/441 , C04B2235/5288 , C04B2235/5409 , C04B2235/5445 , C04B2235/80 , H01M4/13 , H01M4/386 , H01M4/483 , H01M4/625
摘要： Silicon based anode active materials are described for use in lithium ion batteries. The silicon based materials are generally composites of nanoscale elemental silicon with stabilizing components that can comprise, for example, silicon oxide-carbon matrix material, inert metal coatings or combinations thereof. High surface area morphology can further contribute to the material stability when cycled in a lithium based battery. In general, the material synthesis involves a significant solution based processing step that can be designed to yield desired material properties as well as providing convenient and scalable processing.
摘要翻译：硅基阳极活性材料被描述用于锂离子电池。硅基材料通常是纳米级元素硅与稳定组分的复合材料，其中稳定组分可以包含例如氧化硅 - 碳基质材料，惰性金属涂层或其组合。当在锂基电池中循环时，高表面积形态可进一步有助于材料的稳定性。通常，材料合成涉及基于解决方案的显着处理步骤，其可被设计成产生期望的材料性质以及提供方便和可扩展的处理。

3. 发明申请

US20130149609A1 LITHIUM METAL OXIDES WITH MULTIPLE PHASES AND STABLE HIGH ENERGY ELECTROCHEMICAL CYCLING 审中-公开
标题翻译：具有多个相位和稳定的高能量电化学循环的锂金属氧化物
公开(公告)号：US20130149609A1
公开(公告)日：2013-06-13
申请号：US13710713
申请日：2012-12-11
申请人： Envia Systems, Inc.
发明人： Haixia Deng , Subramanian Venkatachalam , Sujeet Kumar , Herman A. Lopez
IPC分类号： H01M4/505
CPC分类号： H01M4/505 , H01M4/386 , H01M4/485 , H01M4/583 , H01M10/0525
摘要： Electrochemically active material comprising a lithium metal oxide composition approximately represented by the formula Li1+bComNinMnpO(2), where −0.2>b>0.2, 0.2>m>0.45, 0.055≦n≦0.24, 0.385≦p≦0.72, and m+n+p is approximately 1 has been synthesized and assembled to batteries. The electrochemical performance of the batteries was evaluated. The lithium metal oxide composition in general comprises a first layered phase, a second layered phase and a spinel phase. A layered Li2MnO3 phase is at least partially activated upon charging to 4.5V. In some embodiments, the material further comprises a stabilization coating covering the lithium metal oxide composition.
摘要翻译：电化学活性材料包含近似由式Li1 + bComNinMnpO（2）表示的锂金属氧化物组合物，其中-0.2> b> 0.2,0.2> m> 0.45,0.055 @ n 0.24，0.385 @ p 0.72和m + n + p约为1已经合成并组装成电池。评估电池的电化学性能。锂金属氧化物组合物通常包括第一层状相，第二层状相和尖晶石相。层状Li2MnO3相在充电至4.5V时至少部分地被激活。在一些实施例中，该材料还包括覆盖锂金属氧化物组合物的稳定涂层。

4. 发明申请

US20160006021A1 HIGH CAPACITY ANODE MATERIALS FOR LITHIUM ION BATTERIES 有权
标题翻译：锂离子电池的高容量阳极材料
公开(公告)号：US20160006021A1
公开(公告)日：2016-01-07
申请号：US14851405
申请日：2015-09-11
申请人： Envia Systems, Inc.
发明人： Herman A. Lopez , Yogesh Kumar Anguchamy , Haixia Deng , Yongbong Han , Charan Masarapu , Subramanian Venkatachalam , Sujeet Kumar
IPC分类号： H01M4/134 , H01M4/131 , H01M4/133 , H01M4/62 , H01M4/38 , H01M4/587 , H01M4/525 , H01M4/505 , H01M10/0525 , H01M4/36
CPC分类号： H01M4/134 , C25F3/12 , H01M4/131 , H01M4/133 , H01M4/364 , H01M4/38 , H01M4/386 , H01M4/505 , H01M4/525 , H01M4/587 , H01M4/621 , H01M4/622 , H01M10/0525 , H01M2004/027 , H01M2004/028 , H01M2220/30 , Y02E60/122
摘要： High capacity silicon based anode active materials are described for lithium ion batteries. These materials are shown to be effective in combination with high capacity lithium rich cathode active materials. Supplemental lithium is shown to improve the cycling performance and reduce irreversible capacity loss for at least certain silicon based active materials. In particular silicon based active materials can be formed in composites with electrically conductive coatings, such as pyrolytic carbon coatings or metal coatings, and composites can also be formed with other electrically conductive carbon components, such as carbon nanofibers and carbon nanoparticles. Additional alloys with silicon are explored.
摘要翻译：锂离子电池描述了大容量硅基阳极活性材料。这些材料显示与高容量富锂正极活性材料组合有效。补充锂显示出改善循环性能并减少至少某些基于硅的活性材料的不可逆容量损失。特别地，硅基活性材料可以与导电涂层（例如热解碳涂层或金属涂层）的复合材料形成，并且复合材料也可以与其它导电碳组分如碳纳米纤维和碳纳米颗粒一起形成。探索了具有硅的附加合金。

5. 发明授权

US10170762B2 Lithium metal oxides with multiple phases and stable high energy electrochemical cycling 有权
公开(公告)号：US10170762B2
公开(公告)日：2019-01-01
申请号：US13710713
申请日：2012-12-11
申请人： Envia Systems, Inc.
发明人： Haixia Deng , Subramanian Venkatachalam , Sujeet Kumar , Herman A. Lopez
IPC分类号： H01M4/00 , H01M4/505 , H01M4/38 , H01M4/485 , H01M4/583 , H01M10/0525
摘要： Electrochemically active material comprising a lithium metal oxide composition approximately represented by the formula Li1+bComNinMnpO(2), where −0.2≤b≤0.2, 0.2≤m≤0.45, 0.055≤n≤0.24, 0.385≤p≤0.72, and m+n+p is approximately 1 has been synthesized and assembled to batteries. The electrochemical performance of the batteries was evaluated. The lithium metal oxide composition in general comprises a first layered phase, a second layered phase and a spinel phase. A layered Li2MnO3 phase is at least partially activated upon charging to 4.5V. In some embodiments, the material further comprises a stabilization coating covering the lithium metal oxide composition.

6. 发明申请

US20170194627A1 SILICON OXIDE BASED HIGH CAPACITY ANODE MATERIALS FOR LITHIUM ION BATTERIES 审中-公开
公开(公告)号：US20170194627A1
公开(公告)日：2017-07-06
申请号：US15425696
申请日：2017-02-06
申请人： Envia Systems, Inc.
发明人： Haixia Deng , Yongbong Han , Charan Masarapu , Yogesh Kumar Anguchamy , Herman A. Lopez , Sujeet Kumar
IPC分类号： H01M4/131 , H01M10/0569 , H01M4/583 , H01M4/525 , H01M4/505 , H01M10/0525 , H01M4/136
CPC分类号： H01M4/131 , H01B1/122 , H01M4/134 , H01M4/136 , H01M4/386 , H01M4/483 , H01M4/505 , H01M4/525 , H01M4/583 , H01M4/622 , H01M4/624 , H01M4/625 , H01M10/052 , H01M10/0525 , H01M10/0569 , H01M2004/027
摘要： Silicon oxide based materials, including composites with various electrical conductive compositions, are formulated into desirable anodes. The anodes can be effectively combined into lithium ion batteries with high capacity cathode materials. In some formulations, supplemental lithium can be used to stabilize cycling as well as to reduce effects of first cycle irreversible capacity loss. Batteries are described with surprisingly good cycling properties with good specific capacities with respect to both cathode active weights and anode active weights.

7. 发明申请

US20140065464A1 BATTERY DESIGNS WITH HIGH CAPACITY ANODE MATERIALS AND CATHODE MATERIALS 有权
标题翻译：电池设计与高容量阳极材料和阴极材料
公开(公告)号：US20140065464A1
公开(公告)日：2014-03-06
申请号：US13777722
申请日：2013-02-26
申请人： Envia Systems, Inc.
发明人： Charan Masarapu , Yogesh Kumar Anguchamy , Yongbong Han , Haixia Deng , Sujeet Kumar , Herman A. Lopez
IPC分类号： H01M4/131 , H01M4/134
CPC分类号： H01M4/131 , B82Y30/00 , H01B1/24 , H01M2/0217 , H01M4/134 , H01M4/386 , H01M4/387 , H01M4/485 , H01M4/505 , H01M4/525 , H01M10/052 , H01M10/0562 , H01M10/446 , Y02T10/7011
摘要： Improved high energy capacity designs for lithium ion batteries are described that take advantage of the properties of high specific capacity anode active compositions and high specific capacity cathode active compositions. In particular, specific electrode designs provide for achieving very high energy densities. Furthermore, the complex behavior of the active materials is used advantageously in a radical electrode balancing design that significantly reduced wasted electrode capacity in either electrode when cycling under realistic conditions of moderate to high discharge rates and/or over a reduced depth of discharge.
摘要翻译：描述了改进的用于锂离子电池的高能量容量设计，其利用高比容量的阳极活性组合物和高比容量的阴极活性组合物的性质。特别地，特定的电极设计提供了实现非常高的能量密度。此外，活性材料的复杂行为有利地用于自由基电极平衡设计，当在中等到高放电率的实际条件下和/或在减小的放电深度下循环时，可显着减少任一电极中浪费的电极容量。

8. 发明授权

US10020491B2 Silicon-based active materials for lithium ion batteries and synthesis with solution processing 有权
公开(公告)号：US10020491B2
公开(公告)日：2018-07-10
申请号：US13864212
申请日：2013-04-16
申请人： Envia Systems, Inc.
发明人： Yongbong Han , Charan Masarapu , Haixia Deng , Yogesh Kumar Anguchamy , Subramanian Venkatachalam , Herman A. Lopez
IPC分类号： H01M4/13 , H01M4/36 , C04B35/14 , C04B35/532 , C04B35/571 , C04B35/80 , H01M4/38 , H01M4/48 , H01M4/62 , C01B33/113 , C01B33/18
CPC分类号： H01M4/362 , C01B33/113 , C01B33/18 , C04B35/14 , C04B35/532 , C04B35/571 , C04B35/806 , C04B2235/425 , C04B2235/428 , C04B2235/441 , C04B2235/5288 , C04B2235/5409 , C04B2235/5445 , C04B2235/80 , H01M4/13 , H01M4/386 , H01M4/483 , H01M4/625
摘要： Silicon based anode active materials are described for use in lithium ion batteries. The silicon based materials are generally composites of nanoscale elemental silicon with stabilizing components that can comprise, for example, silicon oxide-carbon matrix material, inert metal coatings or combinations thereof. High surface area morphology can further contribute to the material stability when cycled in a lithium based battery. In general, the material synthesis involves a significant solution based processing step that can be designed to yield desired material properties as well as providing convenient and scalable processing.

9. 发明授权

US10003068B2 High capacity anode materials for lithium ion batteries 有权
公开(公告)号：US10003068B2
公开(公告)日：2018-06-19
申请号：US14851405
申请日：2015-09-11
申请人： Envia Systems, Inc.
发明人： Herman A. Lopez , Yogesh Kumar Anguchamy , Haixia Deng , Yongbong Han , Charan Masarapu , Subramanian Venkatachalam , Sujeet Kumar
IPC分类号： H01M4/134 , H01M4/38 , H01M4/505 , H01M4/525 , H01M4/62 , H01M10/0525 , H01M4/131 , H01M4/133 , H01M4/36 , H01M4/587 , C25F3/12 , H01M4/02
CPC分类号： H01M4/134 , C25F3/12 , H01M4/131 , H01M4/133 , H01M4/364 , H01M4/38 , H01M4/386 , H01M4/505 , H01M4/525 , H01M4/587 , H01M4/621 , H01M4/622 , H01M10/0525 , H01M2004/027 , H01M2004/028 , H01M2220/30 , Y02E60/122
摘要： High capacity silicon based anode active materials are described for lithium ion batteries. These materials are shown to be effective in combination with high capacity lithium rich cathode active materials. Supplemental lithium is shown to improve the cycling performance and reduce irreversible capacity loss for at least certain silicon based active materials. In particular silicon based active materials can be formed in composites with electrically conductive coatings, such as pyrolytic carbon coatings or metal coatings, and composites can also be formed with other electrically conductive carbon components, such as carbon nanofibers and carbon nanoparticles. Additional alloys with silicon are explored.

10. 发明授权

US09780358B2 Battery designs with high capacity anode materials and cathode materials 有权
公开(公告)号：US09780358B2
公开(公告)日：2017-10-03
申请号：US13777722
申请日：2013-02-26
申请人： Envia Systems, Inc.
发明人： Charan Masarapu , Yogesh Kumar Anguchamy , Yongbong Han , Haixia Deng , Sujeet Kumar , Herman A. Lopez
IPC分类号： H01M4/131 , H01B1/24 , H01M4/134 , H01M4/525 , H01M4/38 , H01M4/485 , H01M4/505 , H01M10/052 , H01M10/0562 , H01M10/44 , B82Y30/00 , H01M2/02
CPC分类号： H01M4/131 , B82Y30/00 , H01B1/24 , H01M2/0217 , H01M4/134 , H01M4/386 , H01M4/387 , H01M4/485 , H01M4/505 , H01M4/525 , H01M10/052 , H01M10/0562 , H01M10/446 , Y02T10/7011
摘要： Improved high energy capacity designs for lithium ion batteries are described that take advantage of the properties of high specific capacity anode active compositions and high specific capacity cathode active compositions. In particular, specific electrode designs provide for achieving very high energy densities. Furthermore, the complex behavior of the active materials is used advantageously in a radical electrode balancing design that significantly reduced wasted electrode capacity in either electrode when cycling under realistic conditions of moderate to high discharge rates and/or over a reduced depth of discharge.

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