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公开(公告)号：US12103857B1
公开(公告)日：2024-10-01
申请号：US18303062
申请日：2023-04-19
Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Feng Liang , Junxi Li , Da Zhang , Zhipeng Xie , Wenhui Ma , Bin Yang
IPC: C01B35/04
CPC classification number: C01B35/04
Abstract: A rapid preparation method of transition metal borides includes steps of: using a tungsten rod as the cathode, and a block mixture of boron powder and metal oxide as the anode, the block mixture and the tungsten rod are placed in an plasma device; the plasma device is evacuated, and then filled with a buffer gas and an electric arc is started to obtain a transition metal boride. The present disclosure adopts the direct current arc plasma method with the advantages of simple operation, low cost, environmental friendliness and controllable reaction atmosphere to prepare the transition metal boride, the preparation process is simple, the preparation process is fast, and the environment will not be affected.
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Patent Agency Ranking
公开(公告)号：US11667530B1
公开(公告)日：2023-06-06
申请号：US17964887
申请日：2022-10-12
Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Feng Liang , Zhipeng Xie , Da Zhang
CPC classification number: C01B32/18 , B01J21/18 , B01J23/42 , B01J35/0013 , B01J37/08
Abstract: A method includes the following steps: a first step: the material containing heteroatom and graphite powder are mixed for a preset time by grinding, and the molar ratio of heteroatom to carbon atom is 1%-10%, then the heteroatom precursors are obtained; a second contact step: the heteroatom precursor is filled into a graphite rod with holes and compacted, then the graphite rod is dried for a preset time to obtain a plasma anode and using a DC arc plasma device to prepare the graphite anode into heteroatom-doped CNHs; a third contact step: the heteroatom-doped CNHs are dispersed in a reducing solution, a platinum salt is added to stir evenly, the reduction reaction is carried out by heating and stirring, and after centrifugation, washing and drying, a catalyst with platinum loading is obtained.
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公开(公告)号：US11981569B2
公开(公告)日：2024-05-14
申请号：US18304316
申请日：2023-04-20
Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Feng Liang , Zhipeng Xie , Da Zhang
Abstract: A method includes the following steps: a first step: the material containing heteroatom and graphite powder are mixed for a preset time by grinding, and the molar ratio of heteroatom to carbon atom is 1%-10%, then the heteroatom precursors are obtained; a second contact step: the heteroatom precursor is filled into a graphite rod with holes and compacted, then the graphite rod is dried for a preset time to obtain a plasma anode and using a DC arc plasma device to prepare the graphite anode into heteroatom-doped CNHs; a third contact step: the heteroatom-doped CNHs are dispersed in a reducing solution, a platinum salt is added to stir evenly, the reduction reaction is carried out by heating and stirring, and after centrifugation, washing and drying, a catalyst with platinum loading is obtained.
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公开(公告)号：US11827518B1
公开(公告)日：2023-11-28
申请号：US18315162
申请日：2023-05-10
Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Feng Liang , Zhipeng Xie , Da Zhang , Long Ma , Yichang Liu , Junxi Li
IPC: C01B32/18
CPC classification number: C01B32/18 , C01P2002/02 , C01P2004/32 , C01P2004/64 , C01P2004/88 , C01P2006/80
Abstract: The present disclosure relates to a method for production of CNHs composite material. The method includes the following steps: a first step: the silicon particles and graphite powder are mixed for a preset time by planetary ball mill device, and the weight ratio of silicon element to carbon element is 10-40%, then the Si/C precursor is obtained; a second contact step: the Si/C precursor is pressed into a precursor block, then using precursor block to the CNHs composite material by a DC arc plasma device.
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公开(公告)号：US11473171B1
公开(公告)日：2022-10-18
申请号：US17828063
申请日：2022-05-31
Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Feng Liang , Zhipeng Xie , Zhenggang Tang , Da Zhang , Bin Yang
Abstract: The invention discloses a method about the integration of the metallurgical purification of metallic gadolinium and the preparation of gadolinium oxide nanoparticles (GONPs) by arc plasma. The method includes the metallurgical purification and the nanoparticle preparation. Firstly, the gadolinium ingot and a tungsten rod respectively act as an anode and a cathode. After the arc furnace is evacuated and then is filled with a working atmosphere, impurities in the gadolinium ingot are removed in the form of volatilization to obtain purified gadolinium by the first arc discharge. Whereafter, the purified gadolinium and the tungsten rod are used as the anode and cathode. After the arc furnace also is evacuated and then also is filled with a working atmosphere, GONPs are obtained from the inner wall of the arc furnace though the second arc discharge. The metallurgical purification of metallic gadolinium and the preparation of GONPs were integrated by arc plasma.
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公开(公告)号：US11370663B1
公开(公告)日：2022-06-28
申请号：US17548606
申请日：2021-12-13
Applicant: KUNMING UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Feng Liang , Zhipeng Xie , Zhenggang Tang , Xiecheng Yang , Da Zhang , Minjie Hou , Yao Kang , Bin Yang , Yongnian Dai
IPC: C01B32/18 , H01M10/0525 , H01M4/583 , H01M10/54
Abstract: The present disclosure relates to a method for production of nitrogen-doped single wall carbon nanohorns from anode graphite of wasted lithium-ion batteries. The method includes the following steps: a first step: forming recycled graphite powder into graphite blocks; and, a second contact step: when the first step is completed, using a DC arc plasma device to produce the graphite blocks into N-SWCNHs.
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