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公开(公告)号：US11725292B2
公开(公告)日：2023-08-15
申请号：US17828172
申请日：2022-05-31
Applicant: University of Houston System
Inventor： Zhifeng Ren , Fang Yu , Haiqing Zhou , Shuo Chen
IPC: C23C16/30 , C25B11/075 , C25B11/061 , C25B1/04 , C23C16/04 , C23C16/18
CPC classification number: C25B11/075 , C23C16/045 , C23C16/18 , C23C16/30 , C25B1/04 , C25B11/061
Abstract: A method of electrocatalytic water splitting by providing an anode and a cathode; and utilizing the anode and the cathode for alkaline water electrolysis. Each of the anode and the cathode comprises a uniform distribution of a bifunctional electrocatalyst comprising metallic phosphides on a conductive substrate. The metallic phosphides comprise arion phosphide (FeP) and dinickel phosphide (Ni2P). The bifunctional electrocatalyst promotes hydrogen evolution reaction (HER) at the cathode, and oxygen evolution reaction (OER) at the anode.
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公开(公告)号：US11271193B2
公开(公告)日：2022-03-08
申请号：US16492319
申请日：2018-03-12
Applicant: University of Houston System
Inventor： Zhifeng Ren , Shuo Chen , Fang Yu , Haiqing Zhou
Abstract: A method of manufacturing an electrode by disposing a three-dimensional substrate in a metal nitrate solution, drying, and thermally phosphatizing with a phosphorus source under inert gas to form a metal based phosphate catalyst on the substrate. An electrocatalyst and electrode produced via the method are also provided.
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公开(公告)号：US20200377675A1
公开(公告)日：2020-12-03
申请号：US16636628
申请日：2018-07-27
Applicant: University of Houston System
Inventor： Zhifeng Ren , Dan Luo , Feng Wang
IPC: C08J3/215 , C01B32/198
Abstract: A facile and scalable method to prepare graphene-based amphiphilic Janus nanosheets with high efficiency utilizing the formation of hydrogen bonding to immobilize graphene oxide (GO) on the surfaces of starch microspheres. After selective functionalization of the exposed surface using alkylamine, amphiphilic Janus nanosheets (AJN) were obtained by releasing the nanosheets from the starch microspheres.
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公开(公告)号：US10323305B2
公开(公告)日：2019-06-18
申请号：US14624007
申请日：2015-02-17
Applicant: University of Houston System
Inventor： Zhifeng Ren , Huaizhou Zhao , Zhongjia Tang , Jiehe Sui , Yucheng Lan , Qing Jie
IPC: C22C12/00 , H01L35/18 , C22C30/00 , C22C23/00 , B22F3/15 , H01L35/14 , H01L35/34 , B22F1/00 , 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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45.发明授权公开(公告)号：US10283690B2
公开(公告)日：2019-05-07
申请号：US15952340
申请日：2018-04-13
Applicant: University of Houston System
Inventor： Qing Jie , Zhifeng Ren , Gang Chen
Abstract: A method of manufacturing a thermoelectric material comprising: ball-milling a compound comprising a plurality of components, the first component M comprising at least one of a rare earth metal, an actinide, an alkaline-earth metal, and an alkali metal, the second component T comprising a metal of subgroup VIII, and the third component X comprises a pnictogen atom. The compound may be ball-milled for up to 5 hours, and then thermo-mechanically processed by, for example, hot pressing the compound for less than two hours. Subsequent to the thermo-mechanical processing, the compound comprises a single filled skutterudite phase with a dimensionless figure of merit (ZT) above 1.0 and the compound has a composition following a formula of MT4X12.
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Patent Agency Ranking
46.发明申请公开(公告)号：US20180257937A1
公开(公告)日：2018-09-13
申请号：US15534271
申请日：2015-12-10
Applicant: University of Houston System
Inventor： Zhifeng Ren , Qian Zhang , Eyob Kebede Chere
CPC classification number: C01B19/002 , C01G21/006 , C01P2002/72 , C01P2004/03 , C01P2004/61 , C01P2006/40 , H01L35/16
Abstract: Systems and methods discussed herein relate to Pb—Se based thermoelectric materials for use in thermoelectric applications, the thermoelectric materials may comprise one or more dopants and are ball-milled into a powder and hot-pressed to form pressed components. The pressed components comprise improved room temperature properties, including a ZT above about 0.5 from about 300 K to about 780 K, which leads to improved device efficiency and overall function.
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47.发明申请公开(公告)号：US20180159012A1
公开(公告)日：2018-06-07
申请号：US15869329
申请日：2018-01-12
Applicant: University of Houston System
Inventor： Zhifeng Ren , Qian Zhang , Gang Chen
Abstract: A thermoelectric composition comprising tin (Sn), tellurium (Te) and at least one dopant that comprises a peak dimensionless figure of merit (ZT) of 1.1 and a Seebeck coefficient of at least 50 μV/K and a method of manufacturing the thermoelectric composition. A plurality of components are disposed in a ball-milling vessel, wherein the plurality of components comprise tin (Sn), tellurium (Te), and at least one dopant such as indium (In). The components are subsequently mechanically and thermally processed, for example, by hot-pressing. In response to the mechanical-thermally processing, a thermoelectric composition is formed, wherein the thermoelectric composition comprises a dimensionless figure of merit (ZT) of the thermoelectric composition is at least 0.8, and wherein a Seebeck coefficient of the thermoelectric composition is at least 50 μV/K at any temperature.
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48.发明授权公开(公告)号：US09972760B2
公开(公告)日：2018-05-15
申请号：US14309567
申请日：2014-06-19
Applicant: University of Houston System
Inventor： Qing Jie , Zhifeng Ren , Gang Chen
CPC classification number: H01L35/18 , B22F3/14 , B22F2301/00 , C22C1/0491 , C22C1/1084 , C22C12/00 , H01L35/20 , H01L35/34
Abstract: A method of manufacturing a thermoelectric material comprising: ball-milling a compound comprising a plurality of components, the first component M comprising at least one of a rare earth metal, an actinide, an alkaline-earth metal, and an alkali metal, the second component T comprising a metal of subgroup VIII, and the third component X comprises a pnictogen atom. The compound may be ball-milled for up to 5 hours, and then thermo-mechanically processed by, for example, hot pressing the compound for less than two hours. Subsequent to the thermo-mechanical processing, the compound comprises a single filled skutterudite phase with a dimensionless figure of merit (ZT) above 1.0 and the compound has a composition following a formula of MT4X12.
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公开(公告)号：US09899117B2
公开(公告)日：2018-02-20
申请号：US14298090
申请日：2014-06-06
Applicant: University of Houston System
Inventor： Zhifeng Ren , Tianyi Sun , Chuanfei Guo
CPC classification number: H01B1/02 , A61N1/0472 , B82Y30/00 , B82Y40/00 , G06F2203/04112 , Y10T428/12424 , Y10T428/24331
Abstract: A transparent flexible nanomesh having at least one conductive element and sheet resistance less than 300Ω/□ when stretched to a strain of 200% in at least one direction. The nanomesh is formed by depositing a sacrificial film, depositing, etching, and oxidizing a first metal layer on the film, etching the sacrificial film, depositing a second metal layer, and removing the first metal layer to form a nanomesh on the substrate.
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50.发明申请公开(公告)号：US20180025804A1
公开(公告)日：2018-01-25
申请号：US15547033
申请日：2016-02-10
Applicant: University of Houston System
Inventor： Zhifeng Ren , Chuanfei Guo , Yuan Liu
CPC classification number: H01B1/16 , H01B1/023 , H01B1/026 , H01B1/22 , H01B13/0036
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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