Patents by Inventor Wei-Hua Pu
Wei-Hua Pu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10854875Abstract: The present disclosure relates to a method for making an electrode material of lithium-ion batteries. In the method, a lithium source solution and a plurality of titanium source particles are provided. The lithium source solution and the titanium source particles are mixed, wherein a molar ratio of lithium element to titanium element is in a range from about 4:5 to about 9:10, thereby forming a sol. A carbon source compound is dispersed into the sol to form a sol mixture. The sol mixture is spray dried to form a plurality of precursor particles. The precursor particles are heated to form a lithium titanate composite electrode material.Type: GrantFiled: April 14, 2016Date of Patent: December 1, 2020Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Jian Gao, Xiang-Ming He, Jian-Jun Li, Wei-Hua Pu, Jian-guo Ren, Li Wang
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Patent number: 9425458Abstract: The present disclosure relates to a method for making an electrode material of lithium-ion batteries. In the method, a lithium source solution and a plurality of titanium source particles are provided. The lithium source solution and the titanium source particles are mixed, wherein a molar ratio of lithium element to titanium element is in a range from about 4:5 to about 9:10, thereby forming a sol. A carbon source compound is dispersed into the sol to form a sol mixture. The sol mixture is spray dried to form a plurality of precursor particles. The precursor particles are heated to form a lithium titanate composite electrode material.Type: GrantFiled: September 20, 2010Date of Patent: August 23, 2016Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Jian Gao, Xiang-Ming He, Jian-Jun Li, Wei-Hua Pu, Jian-Guo Ren, Li Wang
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Publication number: 20160233483Abstract: The present disclosure relates to a method for making an electrode material of lithium-ion batteries. In the method, a lithium source solution and a plurality of titanium source particles are provided. The lithium source solution and the titanium source particles are mixed, wherein a molar ratio of lithium element to titanium element is in a range from about 4:5 to about 9:10, thereby forming a sol. A carbon source compound is dispersed into the sol to form a sol mixture. The sol mixture is spray dried to form a plurality of precursor particles. The precursor particles are heated to form a lithium titanate composite electrode material.Type: ApplicationFiled: April 14, 2016Publication date: August 11, 2016Applicants: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.Inventors: JIAN GAO, XIANG-MING HE, JIAN-JUN LI, WEI-HUA PU, JIAN-GUO REN, LI WANG
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Patent number: 9334340Abstract: This disclosure is related to a method for making a phosphorated polymer for electrochemical reversible lithium storage. A mixture including organic polymer and phosphorus is first heated and then cooled down to room temperature. The mixture is immersed in an alkaline solution after cooling own to room temperature. The pH of the mixture is adjusted to be neutral after immersing in the alkaline solution. The alkaline solution is removed.Type: GrantFiled: October 28, 2014Date of Patent: May 10, 2016Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Li Wang, Xiang-Ming He, Jian-Guo Ren, Wei-Hua Pu, Jian-Jun Li, Jian Gao
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Patent number: 9123942Abstract: A method for making a separator of a lithium ion battery is provided. In the method, a modifier, and a porous membrane are provided. The modifier is a mixture of a phosphorus source having a phosphate radical, a trivalent aluminum source, and a metallic oxide provided in a liquid phase solvent. The modifier is coated on a surface of the porous membrane to form a coating layer. The coated porous membrane is dried to form a modifier layer disposed on the surface of the porous membrane.Type: GrantFiled: February 16, 2012Date of Patent: September 1, 2015Assignees: Tsinghua University, HON HAI PRECISION INDUSTRY CO., LTD.Inventors: Xiang-Ming He, Wei-Hua Pu, Li-Chun Zhang, Jian-Guo Ren, Jian-Jun Li, Jian Gao
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Publication number: 20150051354Abstract: This disclosure is related to a method for making a phosphorated polymer for electrochemical reversible lithium storage. A mixture including organic polymer and phosphorus is first heated and then cooled down to room temperature. The mixture is immersed in an alkaline solution after cooling own to room temperature. The pH of the mixture is adjusted to be neutral after immersing in the alkaline solution. The alkaline solution is removed.Type: ApplicationFiled: October 28, 2014Publication date: February 19, 2015Inventors: LI WANG, XIANG-MING HE, JIAN-GUO REN, WEI-HUA PU, JIAN-JUN LI, JIAN GAO
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Patent number: 8916676Abstract: A method for making a phosphorated polymer is also provided. An organic polymer and phosphorus are mixed to obtain a mixture. A weight ratio of the organic polymer to the phosphorus ranges from about 1:10 to about 4:1. The mixture is dried in an inert atmosphere or vacuum. The mixture is heated in an inert atmosphere or vacuum so that the phosphorus sublimes and reacts with the organic polymer to form a preform. The preform is cooled down to room temperature and immersed in an alkaline solution. The pH of the preform is adjusted to be neutral. The preform is dried.Type: GrantFiled: April 15, 2013Date of Patent: December 23, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Li Wang, Xiang-Ming He, Jian-Guo Ren, Wei-Hua Pu, Jian-Jun Li, Jian Gao
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Patent number: 8852800Abstract: A phosphorated composite capable of electrochemical reversible lithium storage includes a conductive matrix and red phosphorus. The conductive matrix includes a material being selected from the group consisting of conductive polymer and conductive carbonaceous material. A weight percentage of the conductive matrix in the phosphorated composite ranges from about 10% to about 85%. A weight percentage of the red phosphorus in the phosphorated composite ranges from about 15% to about 90%. An anode using the phosphorated composite is also provided.Type: GrantFiled: December 11, 2012Date of Patent: October 7, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Li Wang, Xiang-Ming He, Jian-Guo Ren, Wei-Hua Pu, Jian-Jun Li, Jian Gao
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Patent number: 8821969Abstract: A method for making a modified current collector of a lithium ion battery is provided. In the method, the modifier and a metal plate are provided. The modifier is a mixture of a phosphorus source having a phosphate radical, a trivalent aluminum source, and a metallic oxide provided in a liquid phase solvent. The modifier is coated on a surface of the metal plate to form a coating layer. The coated metal plate is heat treated to transform the coating layer into a protective film formed on the surface of the metal plate.Type: GrantFiled: May 3, 2012Date of Patent: September 2, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Xiang-Ming He, Jian-Jun Li, Li-Chun Zhang, Wei-Hua Pu, Jian Gao, Jian-Guo Ren
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Patent number: 8784693Abstract: A method for making a phosphorated composite is provided. First, a mixture is obtained by mixing a source material with red phosphorus. The weight ratio of the source material to the red phosphorus ranges from about 1:10 to about 5:1. Second, the mixture is dried in an inert atmosphere or vacuum. Third, the mixture is heated in a reacting room filled with an inert atmosphere so that the red phosphorus sublimes. Finally, the reacting room is cooled down.Type: GrantFiled: December 11, 2012Date of Patent: July 22, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Li Wang, Xiang-Ming He, Jian-Guo Ren, Wei-Hua Pu, Jian-Jun Li, Jian Gao
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Patent number: 8765213Abstract: The present disclosure relates to a method for making an electrode material of lithium-ion batteries. In the method, a carbon source compound is dissolved into a solvent to form a liquid phase solution. A number of titanium dioxide particles are provided and are dispersed into the liquid phase solution. The carbon source compound is pyrolyzed, thereby forming a number of carbon coating titanium dioxide particles. A lithium source solution is provided. The lithium source solution and the carbon coating titanium dioxide particles are mixed, according to a molar ratio in a range from about 4:5 to about 9:10, of lithium element to titanium element, thereby forming a sol. The sol is spray dried to form a number of precursor particles. The precursor particles are heated to form a lithium titanate composite electrode material.Type: GrantFiled: September 23, 2010Date of Patent: July 1, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Li Wang, Xiang-Ming He, Jian-Guo Ren, Jian Gao, Jian-Jun Li, Wei-Hua Pu
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Patent number: 8623965Abstract: The present disclosure relates to a sulfurized polyacrylonitrile and a lithium-ion battery cathode active material. The sulfurized polyacrylonitrile includes a structural unit. A general molecular formula of the structural unit is C3HNSn, in which n is a positive integer. The lithium-ion battery cathode active material includes sulfurized polyacrylonitrile and a sulfurized polyacrylonitrile with inserted ions.Type: GrantFiled: March 18, 2011Date of Patent: January 7, 2014Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Xiang-Ming He, Li Wang, Wei-Hua Pu, Wen-Ting Sun, Jian-Jun Li
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Patent number: 8563171Abstract: An electrode slurry which includes an active component, a conductive agent, a binder, an organic solvent, and octylphenolpoly(ethyleneglycolether)x, wherein x=9˜10. The active component, conductive agent, binder, organic solvent, and octylphenolpoly(ethyleneglycolether)x are mixed together. An electrode of lithium battery includes a current collector, and a layer of electrode material applied on a surface of the current collector, wherein a material of the layer of electrode material comprises an active component, a conductive agent, a binder, and octylphenolpoly(ethyleneglycolether)x, wherein x=9˜10.Type: GrantFiled: October 14, 2010Date of Patent: October 22, 2013Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Xiang-Ming He, Wen-Jia Zhang, Wei-Hua Pu, Jian-Jun Li, Jian Gao, Chang-Yin Jiang
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Patent number: 8456067Abstract: The present disclosure relates to a piezoelectric sensor. The piezoelectric sensor includes a polymer layer, a first metal layer, and a second metal layer. The polymer layer includes pyrolytic polyacrylonitrile. The first metal layer is located on a surface of the polymer layer. The first metal layer includes a first work function. The second metal layer is located on another surface of the polymer layer and includes a second work function different from the first work function. The present disclosure also relates to a method for making the piezoelectric sensor.Type: GrantFiled: September 21, 2010Date of Patent: June 4, 2013Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Xiang-Ming He, Wei-Hua Pu, Li Wang, Jian-Jun Li, Jian Gao, Jian-Guo Ren
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Patent number: 8450605Abstract: The present disclosure relates to a method for making a conjugated polymer. In the method, polyacrylonitrile, a solvent, and a catalyst are provided. The polyacrylonitrile is dissolved in the solvent to form a polyacrylonitrile solution. The catalyst is uniformly dispersed into the polyacrylonitrile solution. The polyacrylonitrile solution with the catalyst is heated to induce a cyclizing reaction of the polyacrylonitrile, thereby forming a conjugated polymer solution with the conjugated polymer dissolved therein.Type: GrantFiled: March 18, 2011Date of Patent: May 28, 2013Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Xiang-Ming He, Li Wang, Wei-Hua Pu, Wen-Ting Sun, Jian-Jun Li
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Patent number: 8440786Abstract: A phosphorated polymer includes a conductive polymer main-chain and a side-chain connected to the conductive polymer main-chain. The side-chain includes an electrochemically active phosphorated group Pm. A method for making the phosphorated polymer and a lithium-ion battery using the phosphorated polymer is also provided.Type: GrantFiled: March 9, 2010Date of Patent: May 14, 2013Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Li Wang, Xiang-Ming He, Jian-Guo Ren, Wei-Hua Pu, Jian-Jun Li, Jian Gao
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Patent number: 8389158Abstract: A lithium-ion battery includes an anode, a cathode, and an electrolyte. The anode includes a phosphorated composite including a conductive matrix and a red phosphorus. The conductive matrix includes a material being selected from the group consisting of conductive polymer and conductive carbonaceous material. A weight percentage of the conductive matrix in the phosphorated composite ranges from about 10% to about 85%. A weight percentage of the red phosphorus in the phosphorated composite ranges from about 15% to about 90%.Type: GrantFiled: March 9, 2010Date of Patent: March 5, 2013Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Li Wang, Xiang-Ming He, Jian-Guo Ren, Wei-Hua Pu, Jian-Jun Li, Jian Gao
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Patent number: 8372919Abstract: In a method for making sulfurized polyacrylonitrile, polyacrylonitrile, a first solvent, a catalyst, and sulfur or sodium thiosulfate are provided. The polyacrylonitrile is dissolved in the first solvent to form a polyacrylonitrile solution. The catalyst is uniformly dispersed in the polyacrylonitrile solution. The polyacrylonitrile solution with the catalyst is heated to induce a cyclizing reaction of the polyacrylonitrile, thereby forming a first conjugated polymer solution with a conjugated polymer. The sulfur or sodium thiosulfate is uniformly mixed with the conjugated polymer to form a mixture. The mixture is heated to form sulfurized polyacrylonitrile.Type: GrantFiled: March 18, 2011Date of Patent: February 12, 2013Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Xiang-Ming He, Li Wang, Wei-Hua Pu, Wen-Ting Sun, Jian-Jun Li
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Patent number: 8323836Abstract: A modifier of a lithium ion battery includes a clear solution fabricated from a phosphorous source having a phosphate radical, a trivalent aluminum source, and a metallic oxide provided in a liquid phase solvent. A molar ratio of the trivalent aluminum source, the metallic oxide, and the phosphorous source is set by (MolAl+MolMetal):Molp=about 1:2.5 to about 1:4. MolAl is the amount of substance of an aluminum element in the trivalent aluminum source, MolMetal is the amount of substance of a metallic element in the metallic oxide, and Molp is the amount of substance of a phosphorous element in the phosphorous source.Type: GrantFiled: February 3, 2012Date of Patent: December 4, 2012Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Xiang-Ming He, Jian-Jun Li, Li-Chun Zhang, Wei-Hua Pu, Jian Gao
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Patent number: 8323830Abstract: An electrode composite material includes an individual electrode active material particle and a protective film coated on a surface of the particle. A composition of the protective film is AlxMyPO4, AlxMy(PO3)3, or a combination thereof. M represents at least one of Cr, Zn, Mg, Zr, Mo, V, Nb, or Ta. A valence of M is represented by k, in which 0<x<1, 0<y<1, and 3x+ky=3. In addition, a molar ratio of an aluminum element, an M element, and a phosphorous element in AlxMyPO4 or AlxMy(PO3)3 is set by (MolAl+MolMetal):Molp equal to about 1:2.5 to about 1:4, MolAl is the amount of substance of the aluminum element, MolMetal is the amount of substance of the M element, and Molp is the amount of substance of the phosphorous element. A lithium ion battery includes the electrode composite material.Type: GrantFiled: April 13, 2012Date of Patent: December 4, 2012Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Xiang-Ming He, Jian-Jun Li, Li-Chun Zhang, Jian-Guo Ren, Jian Gao, Wei-Hua Pu