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公开(公告)号：US11417882B2
公开(公告)日：2022-08-16
申请号：US16914565
申请日：2020-06-29
发明人： Jason Croy , Arturo Gutierrez , Michael M. Thackeray , Meinan He
IPC分类号： H01M4/00 , H01M4/525 , C01G53/00 , H01M4/505 , H01M10/0525 , H01M10/0568 , H01M10/0567 , C01G45/12 , H01M4/02
摘要： Electrode materials for electrochemical cells and batteries and methods of producing such materials are disclosed herein. The electrode materials comprise an active lithium metal oxide material prepared by: (a) contacting the lithium metal oxide material with an aqueous acidic solution containing one or more metal cations; and (b) heating the so-contacted lithium metal oxide from step (a) to dryness at a temperature below 200° C. The metal cations in the aqueous acidic solution comprise one or more metal cations selected from the group consisting of an alkaline earth metal ion, a transition metal ion, and a main group metal ion.
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公开(公告)号：US09593024B2
公开(公告)日：2017-03-14
申请号：US14154948
申请日：2014-01-14
CPC分类号： C01D15/02 , H01M4/0402 , H01M4/0471 , H01M4/131 , H01M4/1391 , H01M4/366 , H01M4/505 , H01M6/14 , H01M10/0525 , H01M2004/021 , H01M2004/028 , Y02E60/122 , Y02P70/54
摘要： This invention relates to methods of preparing positive electrode materials for electrochemical cells and batteries. It relates, in particular, to a method for fabricating lithium-metal-oxide electrode materials for lithium cells and batteries. The method comprises contacting a hydrogen-lithium-manganese-oxide material with one or more metal ions, preferably in an acidic solution, to insert the one or more metal ions into the hydrogen-lithium-manganese-oxide material; heat-treating the resulting product to form a powdered metal oxide composition; and forming an electrode from the powdered metal oxide composition.
摘要翻译： 本发明涉及制备用于电化学电池和电池的正极材料的方法。 特别涉及锂电池和电池用锂金属氧化物电极材料的制造方法。 该方法包括使氢 - 锂 - 锰 - 氧化物材料与一种或多种金属离子，优选在酸性溶液中接触，将一种或多种金属离子插入氢 - 锂 - 锰 - 氧化物材料中; 对所得产物进行热处理以形成粉末状金属氧化物组合物; 以及从所述粉末状金属氧化物组合物形成电极。
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公开(公告)号：US10741839B2
公开(公告)日：2020-08-11
申请号：US15909691
申请日：2018-03-01
发明人： Jason Croy , Arturo Gutierrez , Michael M. Thackeray , Meinan He
IPC分类号： H01M4/00 , H01M4/525 , C01G53/00 , H01M4/505 , H01M10/0525 , H01M10/0568 , H01M10/0567 , C01G45/12 , H01M4/02
摘要： Electrode materials for electrochemical cells and batteries and methods of producing such materials are disclosed herein. A method of preparing an active lithium metal oxide material suitable for use in an electrode for a lithium electrochemical cell comprises the steps of: (a) contacting the lithium metal oxide material with an aqueous acidic solution containing one or more metal cations; and (b) heating the so-contacted lithium metal oxide from step (a) to dryness at a temperature below 200° C. The metal cations in the aqueous acidic solution comprise one or more metal cations selected from the group consisting of an alkaline earth metal ion, a transition metal ion, and a main group metal ion.
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公开(公告)号：US11127979B2
公开(公告)日：2021-09-21
申请号：US15923687
申请日：2018-03-16
发明人： Zhengcheng Zhang , Adam P. Tornheim , Meinan He , Jason Croy
IPC分类号： H01M10/0525 , H01M10/0569 , H01M4/133 , H01M4/131 , H01M4/02
摘要： A non-aqueous solvent composition for a lithium battery comprises a fluorinated solvent mixture that consists essentially of a 1,2-difluoroethylene carbonate and a fluoro-substituted dialkyl carbonate in a respective weight ratio of about 1:3 to about 1:1, and optionally up to about 30 wt % of an additional organic solvent. An electrolyte for a lithium ion battery comprises a lithium salt dissolved in a non-aqueous solvent composition comprising the fluorinated solvent mixture.
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公开(公告)号：US10431820B2
公开(公告)日：2019-10-01
申请号：US15645678
申请日：2017-07-10
IPC分类号： H01M4/485 , H01M4/131 , H01M4/1391 , H01M4/36 , H01M4/505 , H01M4/525 , H01M4/02 , H01M10/0525
摘要： The surface of a lithium ion cathode material (e.g., a lithium metal oxide material capable of releasing and accepting lithium ions during charging and discharging, respectively, of a lithium ion electrochemical cell) is coated with a lithium metal oxide (LMO) material comprising a high-valent metal to, inter alia, reduce interfacial resistance toward lithium exchange. Li-rich phases on the surface of the treated LMO particles allow for better lithium ion diffusion. The inclusion of elements that form phases with lithium and can substitute in the host structure allow for mixing across interfaces leading to more robust structures that better mimic epitaxial-type layers. Inclusion of doping elements in place of some of the high-valent metal in the surface-treating composition provides unexpectedly improved performance over surface treatments comprising lithium metal oxides that only include a high-valent metal.
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公开(公告)号：US10305103B2
公开(公告)日：2019-05-28
申请号：US15232188
申请日：2016-08-09
摘要： A structurally inhomogeneous lithium metal oxide material having the Formula (I): y[xLi2MO3•(1-x)LiM′O2]•(1-y)Li1+dM″2−dO4; wherein 0≤x≤1; 0
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公开(公告)号：US20130078518A1
公开(公告)日：2013-03-28
申请号：US13680959
申请日：2012-11-19
发明人： Michael M. Thackeray , Donghan Kim , Jason Croy
CPC分类号： H01M4/505 , H01M4/0402 , H01M4/0471 , H01M4/049 , H01M4/131 , H01M4/366 , H01M10/052
摘要： This invention relates to positive electrode materials for electrochemical cells and batteries. It relates, in particular, to electrode precursor materials comprising manganese ions and to methods for fabricating lithium-metal-oxide electrode materials and structures using the precursor materials, notably for lithium cells and batteries. More specifically, the invention relates to lithium-metal-oxide electrode materials with layered-type structures, spinel-type structures, combinations thereof and modifications thereof, notably those with imperfections, such as stacking faults and dislocations. The invention extends to include lithium-metal-oxide electrode materials with modified surfaces to protect the electrode materials from highly oxidizing potentials in the cells and from other undesirable effects, such as electrolyte oxidation, oxygen loss and/or dissolution.
摘要翻译： 本发明涉及用于电化学电池和电池的正极材料。 特别涉及包含锰离子的电极前体材料和用于制造锂金属氧化物电极材料的方法和使用前体材料的结构，特别是用于锂电池和电池。 更具体地，本发明涉及具有层状结构的锂金属氧化物电极材料，尖晶石型结构，其组合和其变型，特别是具有诸如堆垛层错和位错之类的缺陷的锂 - 金属氧化物电极材料。 本发明延伸到包括具有改性表面的锂 - 金属 - 氧化物电极材料，以保护电极材料免受电池中的高度氧化电位和其它不期望的影响，例如电解质氧化，氧损失和/或溶解。
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