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公开(公告)号：US10319489B2
公开(公告)日：2019-06-11
申请号：US15547033
申请日：2016-02-10
Applicant: University of Houston System
Inventor： Zhifeng Ren , Chuanfei Guo , Yuan Liu
Abstract: Systems and methods of fabricating electrodes, including thin metallic films, include depositing a first metallic layer on a substrate and passivating the deposited layer. The processes of deposition and passivation may be done sequentially. In some embodiments, a plurality of substrates may be coated with a metallic layer and further processed at a later time, including passivation and disposal of additional layers as discussed herein.
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22.发明申请公开(公告)号：US20170336102A1
公开(公告)日：2017-11-23
申请号：US15520026
申请日：2015-09-29
Inventor： Zhifeng Ren , Feng Cao , Daniel Kraemer , Gang Chen
Abstract: A spectrally selective solar absorber is described and comprises a substrate, double cermet layers comprising multi-metal nanoparticles embedded in a dielectrics matrix, and double antireflection layers deposited on cermet layers. The tungsten or titanium or tantalum infrared reflector layer suppressing the diffusion of substrate elements and multi-metal nanoparticles in the cermet are disclosed.
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23.发明申请公开(公告)号：US20170288112A1
公开(公告)日：2017-10-05
申请号：US15627593
申请日：2017-06-20
Inventor： Qing Jie , Zhifeng Ren , Gang Chen
Abstract: Disclosed are methods for the manufacture of n-type and p-type filled skutterudite thermoelectric legs of an electrical contact. A first material of CoSi2 and a dopant are ball-milled to form a first powder which is thermo-mechanically processed with a second powder of n-type skutterudite to form a n-type skutterudite layer disposed between a first layer and a third layer of the doped-CoSi2. In addition, a plurality of components such as iron, and nickel, and at least one of cobalt or chromium are ball-milled form a first powder that is thermo-mechanically processed with a p-type skutterudite layer to form a p-type skutterudite layer “second layer” disposed between a first and a third layer of the first powder. The specific contact resistance between the first layer and the skutterudite layer for both the n-type and the p-type skutterudites subsequent to hot-pressing is less than about 10.0 μΩ·cm2 .
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公开(公告)号：US11975979B2
公开(公告)日：2024-05-07
申请号：US17252360
申请日：2019-06-20
Applicant: University of Houston System
Inventor： Zhifeng Ren , Fei Tian , Gang Chen , Bai Song , Ke Chen , Li Shi , Xi Chen , Sean Sullivan , David Broido , Navaneetha Krishnan Ravichandran
CPC classification number: C01B35/04 , C30B29/40 , C01P2004/61 , C01P2006/32
Abstract: A method for growing bulk boron arsenide (BA) crystals, the method comprising utilizing a seeded chemical vapor transport (CVT) growth mechanism to produce single BAs crystals which are used for further CVT growth, wherein a sparsity of nucleation centers is controlled during the further CVT growth. Also disclosed are bulk BAs crystals produced via the method.
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公开(公告)号：US11411154B2
公开(公告)日：2022-08-09
申请号：US17252659
申请日：2019-06-26
Applicant: University of Houston System
Inventor： Zhifeng Ren , Hangtian Zhu
Abstract: A ZrCoBi-based p-type half-Heusler material can have a formula: ZrCoBi1-x-ySnxSby, where x can vary between 0.01 and 0.25, and y can vary between 0 and 0.2. An average dimensionless figure-of-merit (ZT) for the material can be greater than or equal to about 0.80 as calculated by an integration method for temperatures between 300 and 973 K. A ZrCoBi-based n-type half-Heusler material can have a formula: ZrCo1-xNixBi1-ySby, where x can vary between 0.01 and 0.25, and y can vary between 0 and 0.3. The material has an average dimensionless figure-of-merit (ZT) is greater than or equal to about 0.65 as calculated by an integration method for temperatures between 300 and 973 K.
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Patent Agency Ranking
26.发明申请公开(公告)号：US20210339184A1
公开(公告)日：2021-11-04
申请号：US16883981
申请日：2020-05-26
Inventor： Monzer A. Hourani , Zhifeng Ren , Luo Yu
Abstract: An apparatus is used with supplied power for treating air in an environment. A housing is mobile in the environment and has an intake and an exhaust. At least one prime mover disposed in the housing between the intake and the exhaust is operable to move the air in the environment through the housing from the intake to the exhaust. At least one ultraviolet light source disposed in the housing is connected in electrical communication with the supplied power and is configured to generate ultraviolet radiation in at least one a portion of the housing through which the moved air passes from the intake to the exhaust. At least one permeable barrier disposed in the housing is configured to impede the moved air flow therethrough up to an impedance threshold. The at least one permeable barrier is connected in electrical communication to the supplied power and being heated to a surface temperature.
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公开(公告)号：US10930834B2
公开(公告)日：2021-02-23
申请号：US15547374
申请日：2015-12-10
Applicant: University of Houston System
Inventor： Zhifeng Ren , Weishu Liu
IPC: H01L35/26 , H01L35/34 , C22C1/04 , H01L35/22 , H01L35/16 , C22C23/00 , B22F3/14 , B22F3/24 , B22F9/04 , C22C13/00
Abstract: Discussed herein are systems and methods for fabrication of MgSnGe-based thermoelectric materials for applications from room temperature and near room temperature to high temperature applications. The TE materials may be fabricated by hand or ball milling a powder to a predetermined particle size and hot-pressing the milled powder to form a thermoelectric component with desired properties including a figure of merit (ZT) over a temperature range. The TE materials fabricated may be disposed in thermoelectric devices for varying applications.
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28.发明申请公开(公告)号：US20200212448A1
公开(公告)日：2020-07-02
申请号：US16644437
申请日：2018-08-24
Applicant: UNIVERSITY OF HOUSTON SYSTEM
Inventor： Zhifeng Ren , Siya Huang
IPC: H01M4/62 , C01B32/158 , H01M10/052 , H01M4/1395 , H01M4/04 , H01M4/134
Abstract: A method of forming a battery electrode by forming, on a first substrate, a polymer template comprising interconnected polymer fibers, forming, on the polymer template, a carbon coating to form a carbon-coated polymer template, removing the carbon-coated polymer template from the first substrate, subsequent to removing the carbon-coated polymer template from the first substrate, removing the polymer template from the carbon coating, and disposing the carbon coating on a second substrate. A solid electrolyte interphase layer (SEI) comprising the carbon coating produced via the method, a battery electrode comprising such an SEI layer, and a battery comprising such a battery electrode are also provided.
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29.发明申请公开(公告)号：US20200024701A1
公开(公告)日：2020-01-23
申请号：US16399090
申请日：2019-04-30
Applicant: University of Houston System
Inventor： Zhifeng Ren , Huaizhou Zhao , Zhongjia Tang , Jiehe Sui , Yucheng Lan , Qing Jie
IPC: C22C23/00 , C22C30/00 , C22C12/00 , H01L35/14 , H01L35/18 , H01L35/34 , B22F1/00 , B22F3/15 , B22F9/04 , C22C1/04
Abstract: Systems and methods of manufacturing a thermoelectric, high performance material by using ball-milling and hot pressing materials according to various formulas, where some formulas substitute a different element for part of one of the elements in the formula, in order to obtain a figure of merit (ZT) suitable for thermoelectric applications.
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30.发明授权公开(公告)号：US10243127B2
公开(公告)日：2019-03-26
申请号：US15689344
申请日：2017-08-29
Applicant: University of Houston System
Inventor： Zhifeng Ren , Ran He
Abstract: Discussed herein are half-Heusler thermoelectric materials including niobium, iron, antimony, and titanium that are formed by ball-milling and hot-pressing the ball-milled power to obtain various thermoelectric properties and an average grain size above 1 μm.
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