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公开(公告)号：US12062782B2
公开(公告)日：2024-08-13
申请号：US17033305
申请日：2020-09-25
Applicant: EnPower, Inc.
Inventor： Adrian Yao , Jonathan Hwang
IPC: H01M4/36 , H01M4/04 , H01M4/131 , H01M4/133 , H01M4/1391 , H01M4/1393 , H01M4/38 , H01M4/485 , H01M4/583 , H01M4/587 , H01M4/62 , H01M10/0525 , H01M4/02
CPC classification number: H01M4/366 , H01M4/0404 , H01M4/0435 , H01M4/131 , H01M4/133 , H01M4/1391 , H01M4/1393 , H01M4/386 , H01M4/485 , H01M4/583 , H01M4/587 , H01M4/62 , H01M4/621 , H01M10/0525 , H01M2004/027
Abstract: Electrochemical cells of the present disclosure may include one or more multilayered electrodes. One or both multilayered electrodes may be configured such that a second layer farther from the current collector has a higher resistance to densification than a first layer closer to the current collector. This may be achieved by including a plurality of non-active ceramic particles in the second layer. Accordingly, calendering of the electrode results in a greater compression of the first layer, and a beneficial porosity profile is created. This may improve the ionic conductivity of the electrode, as compared with known systems.
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公开(公告)号：US20240145717A1
公开(公告)日：2024-05-02
申请号：US18051325
申请日：2022-10-31
Applicant: EnPower, Inc.
Inventor： Adrian YAO , Matthew DURANT
CPC classification number: H01M4/622 , H01M4/0435
Abstract: Multilayered electrodes according to aspects of the present disclosure may include a bottom layer comprising a first plurality of electrode particles adhered together by a first binder, and a top layer comprising a second plurality of electrode particles adhered together by a second binder, wherein the first binder is configured to crosslink or coalesce upon calendering. In some examples, the first binder is configured to constrict expansion of electrode particles included in the bottom layer. In some examples, the bottom layer is configured to spring back by a lesser degree than the top layer upon calendering.
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公开(公告)号：US20220271279A1
公开(公告)日：2022-08-25
申请号：US17742601
申请日：2022-05-12
Applicant: EnPower, Inc.
Inventor： Adrian YAO , Jonathan HWANG , Dee STRAND
IPC: H01M4/36 , H01M4/587 , H01M4/04 , H01M4/133 , H01M4/1393 , H01M10/0525
Abstract: Anodes having high top layer sphericity may include a first active material layer including a plurality of first active material particles having a first particle sphericity and a first particle size layered onto and directly contacting a current collector, and a second active material layer including a plurality of second active material particles having a second particle sphericity and a second particle size layered onto and directly contacting the first layer. The second particle sphericity is greater than the first particle sphericity. In some examples, the second particle size is greater than the first particle size.
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公开(公告)号：US20220093916A1
公开(公告)日：2022-03-24
申请号：US17474861
申请日：2021-09-14
Applicant: EnPower, Inc.
Inventor： Adrian YAO , Jonathan HWANG
IPC: H01M4/36 , H01M4/62 , H01M4/525 , H01M4/04 , H01M4/1391 , H01M10/0525 , H01M4/131
Abstract: A cathode including a current collector, a first layer including a first active material composite disposed on the current collector, a second layer including a second active material composite disposed on the first layer, and a separator disposed on the second layer. The first and second active material composites include particles have tailored crystallinities to improve cathode stability and performance. In some examples, the first active material composite includes more polycrystalline active material particles than the second active material layer.
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公开(公告)号：US20210135237A1
公开(公告)日：2021-05-06
申请号：US16998626
申请日：2020-08-20
Applicant: EnPower, Inc.
Inventor： Adrian YAO , Jonathan HWANG , Mayuresh KESKAR
Abstract: An electrochemical cell including a positive electrode (e.g., a cathode) and a negative electrode (e.g., an anode), at least one of which includes an integrated ceramic separator. An integrated ceramic separator may include a plurality of ceramic particles. In some examples, an interlocking region may be disposed between the integrated ceramic separator layer and a corresponding electrode layer, the region including a non-planar boundary between the two layers. In some examples, the electrochemical cell includes a polyolefin separator disposed between the positive electrode and the negative electrode. In some examples, both the positive electrode and the negative electrode include an integrated ceramic separator. In these examples, the positive electrode and the negative electrode may be calendered together such that the integrated separator layers merge and become indistinguishable from each other.
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Patent Agency Ranking
公开(公告)号：US10991942B2
公开(公告)日：2021-04-27
申请号：US16812054
申请日：2020-03-06
Applicant: EnPower, Inc.
Inventor： Adrian Yao , Jonathan Hwang
IPC: H01M4/36 , H01M10/0525 , H01M2/16 , H01M4/04 , H01M4/133 , H01M4/134 , H01M4/38 , H01M4/48 , H01M4/587 , H01M4/66 , H01M50/46 , H01M4/02
Abstract: Electrochemical cells of the present disclosure may include one or more multilayered electrodes. Each multilayered electrode may be configured such that active materials of the layer closest to the current collector have a lower energy to lithiate per mole, a higher energy to delithiate per mole, a different solid state diffusivity, and/or a different average particle size. This arrangement counteracts, for example, natural gradient fields and undesirable polarization found in standard lithium-ion batteries.
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公开(公告)号：US20200161628A1
公开(公告)日：2020-05-21
申请号：US16685217
申请日：2019-11-15
Applicant: EnPower, Inc.
Inventor： Adrian YAO
Abstract: An electrochemical cell including one or more multilayered electrodes may include electrodes configured to have tailored polarization profiles. In some examples, an electrode may include a first layer having a first lithiation energy and a second layer having a second lithiation energy. In some examples, an electrode may include a first layer having a first solid state diffusivity and a second layer having a second solid state diffusivity. In some examples, an electrode may include a first layer having active particles with a first particle size and a second layer having active particles with a second particle size. These configurations of layers may be selected to achieve desired lithiation patterns so as to improve cell charge or discharge rates.
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公开(公告)号：US10069145B1
公开(公告)日：2018-09-04
申请号：US15961032
申请日：2018-04-24
Applicant: EnPower, Inc.
Inventor： Kjell William Schroder , Adrian Yao , Neelam Singh
Abstract: An electrode for use in a device such as a secondary battery may include a first layer having first active particles adhered together by a binder, a second layer having second active particles adhered together by a binder, and an interphase layer interposed between the first and second layers. In some examples, the interphase layer may include an interpenetration of the first and second particles, such that substantially discrete fingers of the first layer interlock with substantially discrete fingers of the second layer.
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公开(公告)号：US10038193B1
公开(公告)日：2018-07-31
申请号：US15663524
申请日：2017-07-28
Applicant: EnPower, Inc.
Inventor： Kjell William Schroder , Adrian Yao , Neelam Singh
CPC classification number: H01M4/62 , H01G9/0029 , H01G9/04 , H01G9/155 , H01G11/04 , H01G11/26 , H01G11/28 , H01G11/32 , H01G11/38 , H01G11/46 , H01M4/0402 , H01M4/0404 , H01M4/0409 , H01M4/0411 , H01M4/0416 , H01M4/043 , H01M4/13 , H01M4/139 , H01M10/0525 , H01M2004/021
Abstract: An electrode for use in a device such as a secondary battery may include a first layer having first active particles adhered together by a binder, a second layer having second active particles adhered together by a binder, and an interphase layer interposed between the first and second layers. In some examples, the interphase layer may include an interpenetration of the first and second particles, such that substantially discrete fingers of the first layer interlock with substantially discrete fingers of the second layer.
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公开(公告)号：US20240396002A1
公开(公告)日：2024-11-28
申请号：US18676175
申请日：2024-05-28
Applicant: EnPower, Inc.
Inventor： Adrian YAO
IPC: H01M4/04 , H01M4/36 , H01M4/62 , H01M10/0525
Abstract: A method for manufacturing a solventless multilayered electrode may include mixing electrode particles with binders to form dry electrode mixtures, compressing the dry electrode mixtures to form electrode films, stacking the electrode films, and compressing the stacked electrode films. Suitable electrode films may include active material particles, conductive particles, electrochemically inactive ceramic particles, and/or the like. In some examples, compressing the stacked electrode films may include compressing the electrode films between pairs of rollers having patterns disposed on one or more exterior surfaces, thereby increasing surface roughness of the electrode films. A system for manufacturing solventless multilayered electrodes may comprise a first plurality of rollers configured to compress dry electrode mixes into electrode films, and a second plurality of rollers configured to compress a stack of electrode films into a single electrode stack.
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