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1.发明申请公开(公告)号：US20180175374A1
公开(公告)日：2018-06-21
申请号：US15842905
申请日：2017-12-15
发明人： Guolong Yang
IPC分类号： H01M4/36 , H01M10/0525 , H01M4/48 , H01M4/04
CPC分类号： H01M4/362 , H01M4/04 , H01M4/0404 , H01M4/133 , H01M4/134 , H01M4/1393 , H01M4/1395 , H01M4/364 , H01M4/366 , H01M4/386 , H01M4/48 , H01M4/587 , H01M4/625 , H01M10/0525 , H01M2004/027 , H01M2004/028
摘要： The present application provides a method for preparing negative electrode of lithium ion battery. The negative electrode prepared according to the present application has large specific surface area, good chemical stability and controllable volume change. The present application also provides a lithium ion battery, including a shell having an opening at one end, a winding core positioned in the shell, electrolyte received in the shell and immersing the winding core, and a cap cover positioned in the opening for enclosing the opening, wherein the winding core comprising a positive electrode, separators and a negative electrode prepared according to the present application. The lithium ion battery provided by the present application including the negative electrode, which contains silicon-carbon composite coated with carbon aerogel, has small internal resistance, good rate capability and high power density.
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公开(公告)号：US20180102530A1
公开(公告)日：2018-04-12
申请号：US15730759
申请日：2017-10-12
发明人： Guolong Yang , Haitao Wang
IPC分类号： H01M4/04 , H01M10/0525 , H01M4/1397 , H01M4/36 , H01M4/58 , H01M4/587
CPC分类号： H01M4/0416 , C01B25/00 , C01B32/18 , C01P2004/84 , H01M4/0471 , H01M4/1397 , H01M4/366 , H01M4/5825 , H01M4/587 , H01M10/0525
摘要： The present application provides a method for preparing a lithium iron phosphate material coated with carbon nanoribbon, including the steps of: 1) fully and uniformly dispersing carbon nanoribbons in an aqueous solution by means of stirring and ultrasonic dispersion, and obtaining a mixture; 2) adding a lithium source, an iron source and a phosphorous source at a molar ratio of Li:Fe:P=1:1:1 into the mixture of step 1) under the protection of inert gas, adding water and stirring to form a slurry, and refluxing the slurry; 3) washing and drying the slurry to obtain a primary lithium iron phosphate material coated with carbon nanoribbon; and 4) annealing the primary lithium iron phosphate material coated with carbon nanoribbon of step 3) at high-temperature in a protective atmosphere of argon containing 5-10% v/v of hydrogen, and obtaining the lithium iron phosphate material coated with carbon nanoribbon.
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公开(公告)号：US20180102533A1
公开(公告)日：2018-04-12
申请号：US15727646
申请日：2017-10-09
发明人： Guolong Yang
IPC分类号： H01M4/133 , H01M4/66 , H01M4/62 , H01M10/0525
CPC分类号： H01M4/133 , B82Y40/00 , C01B32/15 , H01M4/587 , H01M4/623 , H01M4/661 , H01M10/0525 , H01M2004/027
摘要： The present application provides a negative electrode for a lithium ion battery, including a negative electrode current collector and a negative electrode active material formed on the negative electrode current collector. The negative electrode active material includes a carbon nanoribbon, a conductive agent and a binder, and the mass ratio of the carbon nanoribbon, the conductive agent and the binder is (90-95):(0-5):(2-5). The present application also provides a method for preparing a negative electrode for a lithium ion battery, including the steps of: 1) fully mixing a carbon nanoribbon, a conductive agent and a binder at a mass ratio of (90-95):(0-5):(2-5) and obtaining a mixed slurry; and 2) coating the mixed slurry obtained in step 1) on a negative electrode current collector and obtaining a negative electrode for a lithium ion battery.
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