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1. 发明申请

US20220363550A1 SILICA TO HIGH PURITY SILICON PRODUCTION PROCESS 有权
公开(公告)号：US20220363550A1
公开(公告)日：2022-11-17
申请号：US17589848
申请日：2022-01-31
申请人： HPQ-SILICON RESOURCES INC.
发明人： Ali SHAHVERDI , Pierre CARABIN
IPC分类号： C01B33/033 , C01B33/025 , F27B3/08 , C01B33/023
摘要： An apparatus and a process for the production of high purity silicon from silica containing material such as quartz or quartzite, using a vacuum electric arc furnace, are disclosed.

2. 发明申请

US20200095131A1 Process for the Production of Commercial Grade Silicon 审中-公开
公开(公告)号：US20200095131A1
公开(公告)日：2020-03-26
申请号：US16471381
申请日：2017-12-18
申请人： Norwegian University of Science and Technology (NTNU)
发明人： Jafar Safarian , Gabriella Tranell
IPC分类号： C01B33/023 , C01B33/037
摘要： A process for preparing a highly pure silicon by reduction of a calcium silicate slag using a source of aluminium.

3. 发明授权

US10442894B2 Microporous polyimide sponge and method for producing the same 有权
公开(公告)号：US10442894B2
公开(公告)日：2019-10-15
申请号：US15474382
申请日：2017-03-30
申请人： INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
发明人： Haksoo Han , Myeongsoo Kim , Jinyoung Kim , Gunhwi Kim , Daero Lee , Jinuk Kwon
IPC分类号： C08G73/10 , C01B33/023 , C09D179/08 , H01J37/28
摘要： Disclosed is a net-shaped polyimide sponge. The polyimide sponge has a stack structure of nets. Also disclosed is a method for producing a polyimide sponge. The method enables the production of a polyimide sponge in a continuous process, which offers advantages for large-scale production compared to conventional methods using batch systems.

4. 发明申请

US20180198116A1 PROCESSES TO FABRICATE POROUS SILICON AND ITS USE AS FEEDSTOCK FOR SECONDARY BATTERY ELECTRODES 审中-公开
公开(公告)号：US20180198116A1
公开(公告)日：2018-07-12
申请号：US15741903
申请日：2016-07-08
申请人： Navitas Systems, LLC
发明人： Peter Aurora , Pu Zhang , Michael Wixom
IPC分类号： H01M4/134 , H01M4/04 , H01M4/1395 , H01M4/36 , H01M4/38 , C01B33/023
CPC分类号： H01M4/134 , C01B33/023 , C01B33/037 , C01P2006/16 , H01M4/0404 , H01M4/0471 , H01M4/0492 , H01M4/1395 , H01M4/364 , H01M4/386 , H01M10/052
摘要： Provided are processes to form microporous silicon useful as mi active material in an electrode of an electrochemical cell the processes including subjecting a mixture of silicon oxide and a metal reducing agent, optionally aluminum, to mechanical milling to form mechanically activated silicon oxide/aluminium, thermally treating the silicon oxide/aluminium to reduce the silicon oxide and form Si/Al2O3 and removing at least a portion of the alumina from the Si to form a microporous silicon. The resulting electrochemically active microporous silicon is also provided with residual alumina present at 15% by weight or less that demonstrates excellent cycle life and safety.

5. 发明授权

US10011923B2 Method of synthesizing silica nanofibers using sound waves 有权
公开(公告)号：US10011923B2
公开(公告)日：2018-07-03
申请号：US15289565
申请日：2016-10-10
申请人： UT-Battelle, LLC
发明人： Jaswinder K. Sharma , Panos G. Datskos
IPC分类号： D01F9/10 , B01J19/10 , C01B33/12 , C01B33/023
CPC分类号： D01F9/10 , B01J19/10 , B01J2219/08 , B01J2219/0877 , C01B33/023 , C01B33/12 , D10B2101/02 , Y10T428/298
摘要： A method for synthesizing silica nanofibers using sound waves is provided. The method includes providing a solution of polyvinyl pyrrolidone, adding sodium citrate and ammonium hydroxide to form a first mixture, adding a silica-based compound to the solution to form a second mixture, and sonicating the second mixture to synthesize a plurality of silica nanofibers having an average cross-sectional diameter of less than 70 nm and having a length on the order of at least several hundred microns. The method can be performed without heating or electrospinning, and instead includes less energy intensive strategies that can be scaled up to an industrial scale. The resulting nanofibers can achieve a decreased mean diameter over conventional fibers. The decreased diameter generally increases the tensile strength of the silica nanofibers, as defects and contaminations decrease with the decreasing diameter.

6. 发明申请

US20170334729A1 PROCESSES FOR PRODUCING SILICON 审中-公开
公开(公告)号：US20170334729A1
公开(公告)日：2017-11-23
申请号：US15521044
申请日：2016-10-24
申请人： Wacker Chemie AG
发明人： Peter GIGLER , Juergen STOHRER
IPC分类号： C01B33/023
CPC分类号： C01B33/023 , C01P2006/80
摘要： Silicon is produced by magnesiothermic reduction of silicon dioxide, wherein to achieve magnesiothermic reduction a reactant mixture is employed which contains silicon dioxide (SiO2) and magnesium (Mg) and, as moderators, magnesium oxide (MgO) and silicon (Si), and optionally further moderators.

7. 发明授权

US09132405B2 Method of synthesizing silica nanofibers using sound waves 有权
标题翻译：使用声波合成二氧化硅纳米纤维的方法
公开(公告)号：US09132405B2
公开(公告)日：2015-09-15
申请号：US14178648
申请日：2014-02-12
申请人： UT-Battelle, LLC
发明人： Jaswinder K. Sharma , Panos G. Datskos
IPC分类号： B01J19/10 , C01B33/12 , C01B33/023
CPC分类号： D01F9/10 , B01J19/10 , B01J2219/08 , B01J2219/0877 , C01B33/023 , C01B33/12 , D10B2101/02 , Y10T428/298
摘要： A method for synthesizing silica nanofibers using sound waves is provided. The method includes providing a solution of polyvinyl pyrrolidone, adding sodium citrate and ammonium hydroxide to form a first mixture, adding a silica-based compound to the solution to form a second mixture, and sonicating the second mixture to synthesize a plurality of silica nanofibers having an average cross-sectional diameter of less than 70 nm and having a length on the order of at least several hundred microns. The method can be performed without heating or electrospinning, and instead includes less energy intensive strategies that can be scaled up to an industrial scale. The resulting nanofibers can achieve a decreased mean diameter over conventional fibers. The decreased diameter generally increases the tensile strength of the silica nanofibers, as defects and contaminations decrease with the decreasing diameter.
摘要翻译：提供了使用声波合成二氧化硅纳米纤维的方法。该方法包括提供聚乙烯吡咯烷酮溶液，加入柠檬酸钠和氢氧化铵以形成第一混合物，向溶液中加入二氧化硅基化合物以形成第二混合物，并超声处理第二混合物以合成多个二氧化硅纳米纤维，平均截面直径小于70nm，长度为数百微米。该方法可以在没有加热或静电纺丝的情况下进行，而是包括能够扩大到工业规模的较少的能量密集型策略。所得的纳米纤维可以实现比常规纤维更小的平均直径。由于缺陷和污染物随着直径的减小而减小，直径的减小通常会增加二氧化硅纳米纤维的拉伸强度。

8. 发明申请

US20140377653A1 POROUS SILICON BASED NEGATIVE ELECTRODE ACTIVE MATERIAL, METHOD FOR MANUFACTURING THE SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME 审中-公开
标题翻译：多孔硅基负极电极活性材料及其制造方法以及包括其的可充电锂电池
公开(公告)号：US20140377653A1
公开(公告)日：2014-12-25
申请号：US14309945
申请日：2014-06-20
申请人： UNIST ACADEMY-INDUSTRY RESEARCH CORPORATION , SEJIN INNOTECH CO., LTD
发明人： Soojin PARK , Sin Ho CHOI , Ji Hyun YOON , Byoung Man BANG
IPC分类号： H01M4/36 , H01M4/62 , H01M4/48 , C01B33/023 , H01M4/04
CPC分类号： H01M4/364 , C01B33/023 , H01M4/0402 , H01M4/0471 , H01M4/13 , H01M4/366 , H01M4/483 , H01M4/62 , H01M4/625
摘要： The present invention relates to a method of preparing a porous silicon-based negative electrode active material comprising: mixing a porous silica (SiO2) and an aluminum powder; oxidizing all or part of the aluminum powder as an aluminum oxide while at the same time reducing all or part of the porous silica as a porous silicon (Si) by heat-treating a mixture of the porous silica with the aluminum powder, a negative electrode active material, and a rechargeable lithium battery including the same.
摘要翻译：本发明涉及一种制备多孔硅基负极活性材料的方法，包括：将多孔二氧化硅（SiO 2）和铝粉混合; 氧化全部或部分铝粉末，同时通过将多孔二氧化硅与铝粉末的混合物进行热处理，还原作为多孔硅（Si）的全部或部分多孔二氧化硅，将负极活性物质和包括其的可再充电锂电池。

9. 发明申请

US20140328741A1 Silicon Photonic Fiber and Method of Manufacture 有权
标题翻译：硅光子纤维及其制造方法
公开(公告)号：US20140328741A1
公开(公告)日：2014-11-06
申请号：US14333843
申请日：2014-07-17
申请人： Guifang Li , Fatih Yaman
发明人： Guifang Li , Fatih Yaman
IPC分类号： C01B33/023 , G02B6/10
CPC分类号： C01B33/023 , G02B6/02328 , G02B6/02361 , G02B6/102 , G02B2006/12061 , G02B2006/12169
摘要： Methods of converting silica to silicon and fabricating silicon photonic crystal fiber (PCF) are disclosed. Silicon photonic crystal fibers made by the fabrication methods are also disclosed. One fabrication method includes: sealing silica PCF and a quantity of magnesium within a container, the quantity of magnesium defined by 2Mg(g)+SiO2(s)->2MgO(s)+Si(s); converting silica PCF to a reacted PCF through magnesiothermic reduction; and converting the reacted PCF to the fabricated silicon PCF by selective dissolution of the reacted PCF in an acid. Another fabrication method includes: adding silica PCF and a quantity of solid magnesium to an unsealed container, the quantity of magnesium substantially in excess of that defined by 2Mg(g)+SiO2(s)->2MgO(s)+Si(s); converting silica PCF to a reacted PCF through magnesiothermic reduction; and converting the reacted PCF to the fabricated silicon PCF by selective dissolution of the reacted PCF in an acid.
摘要翻译：公开了将二氧化硅转化为硅并制造硅光子晶体光纤（PCF）的方法。还公开了通过制造方法制造的硅光子晶体光纤。一种制造方法包括：将二氧化硅PCF和一定量的镁密封在容器内，由2Mg（g）+ SiO 2（s）〜> 2MgO（s）+ Si（s）限定的镁的量; 通过氧化镁还原将二氧化硅PCF转化为反应的PCF; 并通过将反应的PCF选择性溶解在酸中将反应的PCF转化成制造的硅PCF。另一种制造方法包括：将二氧化硅PCF和一定量的固体镁添加到未密封的容器中，镁的量基本上超过由2Mg（g）+ SiO 2（s）>> 2MgO（s）+ Si ; 通过氧化镁还原将二氧化硅PCF转化为反应的PCF; 并通过将反应的PCF选择性溶解在酸中将反应的PCF转化成制造的硅PCF。

10. 发明授权

US08038973B2 High purity silicon production system and production method 失效
标题翻译：高纯硅生产系统及生产方法
公开(公告)号：US08038973B2
公开(公告)日：2011-10-18
申请号：US12086041
申请日：2006-07-20
申请人： Nobuaki Ito , Kensuke Okazawa , Shinji Tokumaru , Masaki Okajima
发明人： Nobuaki Ito , Kensuke Okazawa , Shinji Tokumaru , Masaki Okajima
IPC分类号： C01B33/023 , B01J19/12
CPC分类号： C01B33/037
摘要： The present invention provides a high purity silicon production system and production method suitable for using inexpensive metallurgical grade metal silicon as a material and using the slag refining method to produce high purity silicon with a purity of 6N or more suitable for solar battery applications, in particular, high purity silicon with a boron content of at least not more than 0.3 mass ppm, inexpensively on an industrial scale, that is, a high purity silicon production system and production method using the slag refining method wherein a direct electromagnetic induction heating means having the function of directly heating the molten silicon in the crucible by electromagnetic induction is arranged outside the outside wall surface of the above crucible and the crucible is formed by an oxidation resistant material at least at a region where the molten silicon contacts the crucible inside wall surface at the time of not powering the direct electromagnetic induction heating means.
摘要翻译：本发明提供了一种适用于廉价的冶金级金属硅作为材料的高纯度硅生产系统和生产方法，并且使用炉渣精炼方法生产出适合于太阳能电池应用的纯度为6N或更高的高纯度硅，特别是硼含量至少为0.3质量ppm以下的高纯度硅，以工业规模廉价，即高纯硅生产系统和使用渣精炼方法的生产方法，其中直接电磁感应加热装置具有通过电磁感应直接加热坩埚中的熔融硅的功能被布置在上述坩埚的外壁表面的外侧，坩埚至少在熔融硅与坩埚内壁表面接触的区域由抗氧化材料形成没有为直接电磁感应加热装置供电的时间。

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