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公开(公告)号：US20200147598A1
公开(公告)日：2020-05-14
申请号：US16742491
申请日：2020-01-14
摘要： A method of forming a film system includes depositing a monolayer formed from a fluorocarbon onto a substrate. After depositing, the method includes ablating the monolayer to define a plurality of cavities therein, wherein each of the plurality of cavities is spaced apart from an adjacent one of the plurality of cavities along the monolayer. After ablating, the method includes embedding a photocatalytic material into each of the plurality of cavities to form a film on the substrate and thereby form the film system. The film system includes a plurality of regions including the photocatalytic material and disposed within the monolayer such that each of the plurality of regions abuts and is surrounded by the fluorocarbon.
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公开(公告)号：US20220158167A1
公开(公告)日：2022-05-19
申请号：US17097483
申请日：2020-11-13
发明人： Xingcheng XIAO , Hongliang WANG , Gayatri V. DADHEECH , Mei CAI
IPC分类号： H01M4/133 , H01M4/1393 , H01M4/587 , H01M4/36 , H01M4/66 , H01M10/0525 , H01M4/62
摘要： An electrode for an electrochemical cell is provided. The electrode includes a carbon membrane having a first face and an opposing second face, wherein at least a portion of the carbon membrane is modified to include an elevated number of nucleation sites for lithium relative to the carbon membrane when unmodified.
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3.发明申请公开(公告)号：US20200220172A1
公开(公告)日：2020-07-09
申请号：US16243969
申请日：2019-01-09
发明人： Xingcheng XIAO , Li YANG , Gayatri V. DADHEECH , Gongshin QI , Mark W. VERBRUGGE , Sherman H. ZENG
IPC分类号： H01M4/525 , H01M10/0525 , H01M4/38 , H01M4/62 , H01M10/0569 , H01M10/44
摘要： A rechargeable lithium-ion battery is provided that includes a positive electrode with a positive electroactive material that in a charged state includes lithium iron (II) orthosilicate (Li2FeSiO4) and in a discharged state includes FeSiO4 or LiFeSiO4. A negative electrode includes phosphorene. A separator is disposed between the positive and negative electrodes. An electrolyte has an organic solvent especially containing ether-based organic solvents and a lithium salt that provides a conductive medium for lithium ions to transfer between the positive electrode and the negative electrode. Such a rechargeable lithium-ion battery provides advantageous power delivery, long driving ranges, and fast charge to enhance widespread use of batteries, especially in vehicles. Furthermore, lithium plating can be minimized or avoided, even at low temperature charging. Methods of recharging a rechargeable lithium-ion battery at low temperatures are also provided.
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公开(公告)号：US20200171476A1
公开(公告)日：2020-06-04
申请号：US16782812
申请日：2020-02-05
摘要： A self-cleaning film system configured for reducing a visibility of a contaminant includes a substrate and a film. The film includes a monolayer defining a plurality of cavities and formed from a first material having a first surface energy, and a plurality of patches disposed within the plurality of cavities. Each of the patches is formed from a photocatalytic material having a second surface energy that is higher than the first. The film has a touchpoint area having a first use frequency, and a second area having a second use frequency that is less than the first. The patches are present in the touchpoint area in a first concentration and are configured to direct the contaminant towards the second area. The patches are present in the second area in a second concentration that is higher than the first and are configured to reduce the visibility of the contaminant.
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公开(公告)号：US20180248182A1
公开(公告)日：2018-08-30
申请号：US15964179
申请日：2018-04-27
发明人： Gayatri V. DADHEECH , Xingcheng XIAO , Mei CAI
摘要： In an example of a method for making a sulfur-based positive electrode active material, a carbon layer is formed on a sacrificial nanomaterial. The carbon layer is coated with titanium dioxide to form a titanium dioxide layer. The sacrificial nanomaterial is removed to form a hollow material including a hollow core surrounded by a carbon and titanium dioxide double shell. Sulfur is impregnated into the hollow core.
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公开(公告)号：US20220344669A1
公开(公告)日：2022-10-27
申请号：US17237418
申请日：2021-04-22
IPC分类号： H01M4/66 , H01M10/0562 , H01M10/0525
摘要： The present disclosure provides an electrochemical cell that includes an electrically conductive material layer, a precursor material disposed on or adjacent to a first surface of the electrically conductive material layer, and an electroactive material layer disposed on or adjacent to the precursor material. In certain variations, the precursor material forms a continuous layer and a solid-electrolyte interface layer is disposed on or adjacent to an exposed surface of the electroactive material layer. In other variations, the precursor material forms a plurality of distinct precursor structures disposed on the first surface of the electrically conductive material layer in a predetermined pattern, such that at least a portion of each distinct precursor structure is unobstructed by the electroactive material layer. The distinct precursor structures are configured to form surface structures that chemically attach the solid-electrolyte interface layer and the electrically conductive material layer.
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公开(公告)号：US20220285747A1
公开(公告)日：2022-09-08
申请号：US17752169
申请日：2022-05-24
发明人： Jing GAO , Brian J. KOCH , Zhe LI , Alfred ZHANG , Gayatri V. DADHEECH
摘要： A method of making a reference electrode assembly for an electrochemical cell according to various aspects of the present disclosure includes providing a subassembly including a separator layer and a current collector layer coupled to the separator layer. The method further includes providing an electrode ink including an electroactive material, a binder, and a solvent. The method further includes creating a reference electrode precursor by applying an electroactive precursor layer to the current collector layer. The electroactive precursor layer covers greater than or equal to about 90% of a superficial surface area of a surface of the current collector layer. The electroactive precursor layer includes the electrode ink. The method further includes creating the reference electrode assembly by drying the electroactive precursor layer to remove at least a portion of the solvent, thereby forming an electroactive layer. The electroactive layer is solid and porous.
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公开(公告)号：US20210091369A1
公开(公告)日：2021-03-25
申请号：US16577921
申请日：2019-09-20
发明人： Gayatri V. DADHEECH , Brian J. KOCH , Alfred ZHANG , Robert S. CONELL , Jing GAO
IPC分类号： H01M4/04 , H01M4/52 , H01M10/0525 , H01J37/34 , C23C14/00 , C23C14/35 , H01M4/134 , H01M4/66
摘要： A method of manufacturing a component for a reference electrode assembly according to various aspects of the present disclosure includes providing a separator having first and second opposing surfaces. The method further includes sputtering a first current collector layer to the first surface via magnetron or ion beam sputtering deposition. A porosity of the separator is substantially unchanged by the sputtering. In one aspect, the method further includes sputtering a second current collector layer to the second surface via magnetron or ion beam sputtering deposition. In one aspect, the first current collector layer includes nickel and defines a first thickness of greater than or equal to about 200 nm to less than or equal to about 300 nm and the second current collector layer includes gold and defines a second thickness of greater than or equal to about 25 nm to less than or equal to about 100 nm.
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公开(公告)号：US20200220234A1
公开(公告)日：2020-07-09
申请号：US16243517
申请日：2019-01-09
发明人： Gayatri V. DADHEECH , Li YANG , Xingcheng XIAO , Gongshin QI , Vijay P. SAHARAN
IPC分类号： H01M10/52 , H01M10/0525 , B01J29/068 , B01J37/02
摘要： A lithium ion battery is provided that includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. One or more of the separator, positive electrode, and negative electrode includes a transition metal compound capable of catalyzing any gaseous reactants formed in the lithium ion battery to form a liquid. The transition metal compound may include ruthenium (Ru). In certain variations, the lithium ion battery includes an electrolyte that is a conductive medium for lithium ions to move between the positive electrode and the negative electrode. The electrolyte comprises a transition metal compound capable of catalyzing a reaction of any gaseous reactants to form a liquid.
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公开(公告)号：US20220294038A1
公开(公告)日：2022-09-15
申请号：US17752180
申请日：2022-05-24
发明人： Jing GAO , Brian J. KOCH , Zhe LI , Alfred ZHANG , Gayatri V. DADHEECH
摘要： A method of making a reference electrode assembly for an electrochemical cell according to various aspects of the present disclosure includes providing a subassembly including a separator layer and a current collector layer coupled to the separator layer. The method further includes providing an electrode ink including an electroactive material, a binder, and a solvent. The method further includes creating a reference electrode precursor by applying an electroactive precursor layer to the current collector layer. The electroactive precursor layer covers greater than or equal to about 90% of a superficial surface area of a surface of the current collector layer. The electroactive precursor layer includes the electrode ink. The method further includes creating the reference electrode assembly by drying the electroactive precursor layer to remove at least a portion of the solvent, thereby forming an electroactive layer. The electroactive layer is solid and porous.
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