Patents by Inventor Shuirong Zhang
Shuirong Zhang 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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Publication number: 20240072306Abstract: An electrochemical device, including a cathode, an anode and an electrolyte. The anode includes an anode current collector and an anode active material disposed on the anode current collector, the electrolyte includes fluoroethylene carbonate, and the electrochemical device meets the following relationship: 17.55?K1?K2?1.63K32+11.27K3?20.80, where K1 represents a specific surface area value of the unit mass of the anode active material (in m2/g), and 1.0?K1?2.0; K2 represents a content value of the fluoroethylene carbonate required by per Ah capacity (in g/Ah), and 0.05?K2?0.25; and K3 represents a weight value of the anode active material required by per Ah capacity (in g/Ah).Type: ApplicationFiled: October 26, 2023Publication date: February 29, 2024Applicant: Dongguan Amperex Technology LimitedInventors: Hui CUI, Pengyang FENG, Shuirong ZHANG, Jiali DONG
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Publication number: 20240055664Abstract: An electrochemical device, including a cathode, an anode and an electrolyte. The anode includes an anode current collector and an anode active material disposed on the anode current collector, the electrolyte includes fluoroethylene carbonate, and the electrochemical device meets the following relationship: 17.55?K1?K2?1.63K32+11.27K3?20.80, where K1 represents a specific surface area value of the unit mass of the anode active material (in m2/g), and 1.0?K1?2.0; K2 represents a content value of the fluoroethylene carbonate required by per Ah capacity (in g/Ah), and 0.05?K2?0.25; and K3 represents a weight value of the anode active material required by per Ah capacity (in g/Ah).Type: ApplicationFiled: October 26, 2023Publication date: February 15, 2024Applicant: Dongguan Amperex Technology LimitedInventors: Hui CUI, Pengyang FENG, Shuirong ZHANG, Jiali DONG
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Patent number: 11837698Abstract: An electrochemical device, including a cathode, an anode and an electrolyte. The anode includes an anode current collector and an anode active material disposed on the anode current collector, the electrolyte includes fluoroethylene carbonate, and the electrochemical device meets the following relationship: 17.55?K1?K2?1.63K32+11.27K3?20.80, where K1 represents a specific surface area value of the unit mass of the anode active material (in m2/g), and 1.0?K1?2.0; K2 represents a content value of the fluoroethylene carbonate required by per Ah capacity (in g/Ah), and 0.05?K2?0.25; and K3 represents a weight value of the anode active material required by per Ah capacity (in g/Ah). The electrochemical device of the present application has improved kinetic performance and cycle performance.Type: GrantFiled: December 24, 2019Date of Patent: December 5, 2023Assignee: DONGGUAN AMPEREX TECHNOLOGY LIMITEDInventors: Hui Cui, Pengyang Feng, Shuirong Zhang, Jiali Dong
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Publication number: 20230318038Abstract: An electrochemical apparatus, including a positive electrode, a negative electrode, and an electrolyte, where the electrolyte includes fluoroethylene carbonate and non-fluorinated cyclic carbonate, the fluoroethylene carbonate accounts for a % of the electrolyte by mass, and the non-fluorinated cyclic carbonate accounts for b % of the electrolyte by mass, where 0.05?a/b?2.5.Type: ApplicationFiled: June 8, 2023Publication date: October 5, 2023Applicant: Ningde Amperex Technology LimitedInventors: Shuirong ZHANG, Lilan ZHANG, Xiao YUAN, Chao TANG
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Patent number: 11742518Abstract: An electrolyte includes at least one of a compound of Formula I, a compound of Formula II or a compound of Formula III; and a compound of Formula IV; where, R11, R12, R13, R21, R22, R31, R32, R33 and R34 are independently selected from H, halo, cyano, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C2-C10 alkenyl, and substituted or unsubstituted C6-C12 aryl; R41 and R44 are independently selected from H, F, cyano, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C2-C10 alkenyl, substituted or unsubstituted C6-C12 aryl, Ra—(O—Rb), or (O—Rb); and R42 and R43 are independently selected from Rc—(O—Rd) or (O—Rd). Rb is selected from substituted or unsubstituted C1-C4 alkyl; Ra, Rc and Rd are independently selected from substituted or unsubstituted C1-C4 alkylene, C2-C5 alkenylene, or C6-C12 aryl.Type: GrantFiled: December 24, 2019Date of Patent: August 29, 2023Assignee: NINGDE AMPEREX TECHNOLOGY LIMITEDInventors: Hui Cui, Shuirong Zhang, Chao Tang, Jianming Zheng
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Patent number: 11735771Abstract: The present application relates to an electrolytic solution and an electrochemical device using same. The electrolytic solution of the present application comprises a compound containing a —CN functional group and a compound containing a P—O bond. By introducing the compound containing a —CN functional group and the compound containing a P—O bond into the electrolytic solution, an active material can be better protected, thereby effectively improving floatation performance and nailing performance of a battery, and cycle impedance of the battery.Type: GrantFiled: January 20, 2020Date of Patent: August 22, 2023Assignee: NINGDE AMPEREX TECHNOLOGY LIMITEDInventors: Wenqiang Li, Shuirong Zhang, Chunrui Xu, Juan Ma
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Publication number: 20230261264Abstract: An electrochemical device, including a positive electrode, a negative electrode, a separator, and an electrolytic solution. The negative electrode includes a negative active material layer. The negative active material layer includes a silicon material. The electrolytic solution includes fluorocarbonate and cyclic ether. A weight percent of the fluorocarbonate, a weight percent of the cyclic ether, and a unit reaction area of the negative active material layer satisfy a specific relational expression, thereby improving the high-temperature storage performance and the high-temperature cycle performance of the electrochemical device.Type: ApplicationFiled: March 31, 2023Publication date: August 17, 2023Applicant: Ningde Amperex Technology LimitedInventors: Shuirong ZHANG, Junfei LIU, Chao TANG
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Patent number: 11646447Abstract: The present application relates to an electrolyte and an electrochemical device. The electrolyte comprises a cesium salt and a nitrile compound. The electrolyte provided in the present application improves rapid charge-discharge performance and cycle performance of a lithium-ion battery while improving the problem of battery gassing during continuous charge.Type: GrantFiled: January 6, 2020Date of Patent: May 9, 2023Assignee: NINGDE AMPEREX TECHNOLOGY LIMITEDInventors: Shuirong Zhang, Wenqiang Li, Juan Ma, Chao Tang
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Publication number: 20220223915Abstract: An electrolyte including a dinitrile compound, a multi-nitrile compound with more than 2 cyano groups, and a boron-containing lithium salt. Based on a total weight of the electrolyte, a content of the dinitrile compound is A %, a content of the multi-nitrile compound is B %, and a content of the boron-containing lithium salt is C %, and 0?(A/B)?C+1?11. The cycle performance of the electrochemical device including the electrolyte is improved at a high temperature and in a high state of charge.Type: ApplicationFiled: March 30, 2022Publication date: July 14, 2022Applicant: Ningde Amperex Technology LimitedInventors: ShuiRong ZHANG, Xiao YUAN, Lilan ZHANG, Chao TANG
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Patent number: 11387491Abstract: The present application provides an electrolyte and a secondary battery comprising the same. The electrolyte is prepared by adding a siloxane compound, a nitrile compound and an electrolyte salt with different contents into an organic solvent.Type: GrantFiled: October 16, 2018Date of Patent: July 12, 2022Assignee: Ningde Amperex Technology LimitedInventors: Shuirong Zhang, Chao Tang, Wenqiang Li
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Publication number: 20220131196Abstract: An electrochemical device includes a positive electrode, a negative electrode, a separator located between the positive electrode and the negative electrode, and an electrolytic solution. The positive electrode includes a positive current collector and a positive active material layer disposed on the positive current collector. The positive active material layer includes a positive active material. The positive active material includes an element A. The element A is selected from at least one of Al, B, Ca, Mg, Ti, Cu, Nb, Si, Zr, Y, or W. The electrolytic solution includes at least one of 1,3-propane sultone or a derivative thereof. A mass ratio of the element A in the positive active material to 1,3-propane sultone or a derivative is 1:0.2 to 1:50.Type: ApplicationFiled: January 5, 2022Publication date: April 28, 2022Applicant: Ningde Amperex Technology LimitedInventors: Junfei LIU, Shuirong ZHANG, Chao TANG, Jianming ZHENG
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Patent number: 11233270Abstract: The present application relates to a gel polymer electrolyte and an electrochemical device comprising the gel polymer electrolyte. The gel polymer electrolyte according to the present application comprises a polymer film and an organic electrolytic solution comprising a lithium salt, a phosphate ester compound, and a fluoroether compound. The gel polymer electrolyte according to the present application has higher ionic conductivity and better electrochemical stability, and is capable of significantly improving the safety and cycle performance of the electrochemical device.Type: GrantFiled: April 25, 2019Date of Patent: January 25, 2022Assignee: NINGDE AMPEREX TECHNOLOGY LIMITEDInventors: Qian Wen, Bin Wang, Junfei Liu, Shuirong Zhang
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Publication number: 20210408596Abstract: An electrochemical device, including a cathode, an anode and an electrolyte. The anode includes an anode current collector and an anode active material disposed on the anode current collector, the electrolyte includes fluoroethylene carbonate, and the electrochemical device meets the following relationship: 17.55?K1?K2?1.63K32+11.27K3?20.80, where K1 represents a specific surface area value of the unit mass of the anode active material (in m2/g), and 1.0?K1?2.0; K2 represents a content value of the fluoroethylene carbonate required by per Ah capacity (in g/Ah), and 0.05?K2?0.25; and K3 represents a weight value of the anode active material required by per Ah capacity (in g/Ah). The electrochemical device of the present application has improved kinetic performance and cycle performance.Type: ApplicationFiled: December 24, 2019Publication date: December 30, 2021Inventors: Hui CUI, Pengyang FENG, Shuirong ZHANG, Jiali DONG
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Publication number: 20210408600Abstract: An electrolyte includes at least one of a compound of Formula I, a compound of Formula II or a compound of Formula III; and a compound of Formula IV; where, R11, R12, R13, R21, R22, R31, R32, R33 and R34 are independently selected from H, halo, cyano, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C2-C10 alkenyl, and substituted or unsubstituted C6-C12 aryl; R41 and R44 are independently selected from H, F, cyano, substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C2-C10 alkenyl, substituted or unsubstituted C6-C12 aryl, Ra—(O—Rb), or (O—Rb); and R42 and R43 are independently selected from Rc—(O—Rd) or (O—Rd). Rb is selected from substituted or unsubstituted C1-C4 alkyl; Ra, Rc and Rd are independently selected from substituted or unsubstituted C1-C4 alkylene, C2-C5 alkenylene, or C6-C12 aryl.Type: ApplicationFiled: December 24, 2019Publication date: December 30, 2021Inventors: Hui CUI, Shuirong ZHANG, Chao TANG, Jianming ZHENG
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Patent number: 11165097Abstract: The present application relates to an electrolyte, an electrochemical device and an electronic device comprising the same. The electrolyte of the present application includes a cyclic N-containing sulfonyl-compound and at least one of vinylene carbonate, fluoroethylene carbonate, lithium tetrafluoroborate, lithium difluoro(oxalato)borate or lithium difluorophosphate. The electrolyte of the present application may further include a sulfur-oxygen double bond containing compound and a silicon-containing carbonate. Compared with the prior art, using the electrolyte provided by the present application can effectively improve the high-temperature storage, cycle performance and overcharge performance of an electrochemical device, such as a lithium-ion battery.Type: GrantFiled: June 27, 2019Date of Patent: November 2, 2021Assignee: NINGDE AMPEREX TECHNOLOGY LIMITEDInventors: Chunrui Xu, Wenqiang Li, Chao Tang, Shuirong Zhang
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Patent number: 11145901Abstract: The present application relates to an electrolyte and an electrochemical device. The electrolyte includes an organic solvent, an additive and a lithium salt, the additive including a cyclic borate and a nitrile compound. The electrolyte of the present application has good stability at a high working voltage. In another embodiment of the present application, the combination of the electrolyte and an anode having a high compacted density provides a high energy density for the electrochemical device, and improves the storage, floating charge and dynamicperformance of the electrochemical device.Type: GrantFiled: May 8, 2019Date of Patent: October 12, 2021Assignee: NINGDE AMPEREX TECHNOLOGY LIMITEDInventors: Juan Ma, Shuirong Zhang, Junfei Liu, Chao Tang
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Publication number: 20210257662Abstract: The present application relates to an electrolytic solution and an electrochemical device using same. The electrolytic solution of the present application comprises a compound containing a —CN functional group and a compound containing a P—O bond. By introducing the compound containing a —CN functional group and the compound containing a P—O bond into the electrolytic solution, an active material can be better protected, thereby effectively improving floatation performance and nailing performance of a battery, and cycle impedance of the battery.Type: ApplicationFiled: January 20, 2020Publication date: August 19, 2021Inventors: Wenqiang LI, Shuirong ZHANG, Chunrui XU, Juan MA
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Patent number: 11031630Abstract: The present application provides an electrolyte and an electrochemical device. The electrolyte according to the present application comprises a carboxylate, a barbituric acid compound and a nitrile compound. Adding a barbituric acid compound and a nitrile compound of particular structure to an electrolyte containing a carboxylate solvent can significantly improve the rate performance of an electrochemical device, and mitigate capacity loss after storage at room temperature, and cycle fading and gas generation at high-temperature of the electrochemical device.Type: GrantFiled: May 24, 2019Date of Patent: June 8, 2021Assignee: NINGDE AMPEREX TECHNOLOGY LIMITEDInventors: Shuirong Zhang, Wenqiang Li, Qian Wen, Chao Tang
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Patent number: 11031626Abstract: The present application relates to an electrolytic solution and an electrochemical device containing the electrolytic solution. The electrolytic solution of the present invention comprises a compound having a —CN functional group, and is capable of significantly improving the floating-charge performance, the increased impedance accompanying the long-term cycle test, and the thermal impact performance of an electrochemical device using the electrolytic solution.Type: GrantFiled: December 6, 2018Date of Patent: June 8, 2021Assignee: NINGDE AMPEREX TECHNOLOGY LIMITEDInventors: Wenqiang Li, Shuirong Zhang, Chao Tang
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Publication number: 20210083327Abstract: The present application relates to an electrolyte and an electrochemical device including the same. The electrolyte includes a diboronic acid compound and a nitrile compound, so that the storage performance and cycle performance of the electrochemical device using the electrolyte can be remarkably improved.Type: ApplicationFiled: January 20, 2020Publication date: March 18, 2021Inventors: Junfei LIU, Shuirong ZHANG, Juan MA, Chao TANG