Patents by Inventor Xufeng ZHOU
Xufeng ZHOU 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: 20240141785Abstract: A zonal bolt-grouting support device and method for cataclastic rock mass large deformation of a high-stress tunnel, the method includes: drill holes in surrounding rock of a tunnel against a tunnel face after rock mass excavation, install high-strength prestressed anchor members, apply a preload to anchor bolts when expansion anchoring agent is fully expanded and has a certain strength, and zonally grout the surrounding rock after stress adjustment. The high-strength prestressed anchor member comprises an anchor bolt, an expansion anchor agent, a decoupling material, a grouting device, a reverse anti-skid device, etc. The grouting device consists of a shallow grouting steel pipe, a deep grouting steel pipe and a grouting stop valve, and the grouting steel pipe is arranged side by side with the anchor bolt in a drill hole. The technical proposal of the invention effectively inhibits the large deformation of a cataclastic rock mass.Type: ApplicationFiled: October 30, 2023Publication date: May 2, 2024Inventors: Guojin Zhu, Pengzhi Pan, Xuexing Cao, Yangyi Zhou, Zhaofeng Wang, Shijie Yang, Xufeng Liu, Huyue Zhan, Fengqiong Li
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Publication number: 20240141786Abstract: An active control method and device for large deformation of a deep thin-bedded surrounding rock, the active control method includes: drill holes in the surrounding rock of a tunnel against a tunnel face, add the active control device containing a sleeve, a high-strength prestressed anchor bolt, a resin anchoring agent and a grouting device into drill holes, apply a preload to the anchor bolt when the resin anchoring agent has a certain strength, and carry out lag grouting in the surrounding rock through the grouting device after stress adjustment, and the high-strength prestressed anchor bolt and the grouting device are inserted in the sleeve with holes on the side. The active control device or method of the invention can effectively reduce the fracture depth and degree of a thin-bedded soft rock in deep engineering, and effectively inhibit the occurrence of large deformation disasters.Type: ApplicationFiled: October 30, 2023Publication date: May 2, 2024Inventors: Hua Zhou, Yelin Feng, Fugang Zhao, Pengzhi Pan, Hailong Huang, Zhaofeng Wang, Xufeng Liu, Yangyi Zhou, Longhai Xi, Xuanjiao Zhen
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Patent number: 11472939Abstract: A thermally conductive three-dimensional (3-D) graphene-polymer composite material, methods of making, and uses thereof are described. The thermally conductive three-dimensional (3-D) graphene-polymer composite material contains: (a) a porous 3-D graphene structure comprising a network of graphene layers that are attached to one another through a carbonized organic polymer bridging agent; and (b) a polymer material impregnated within the porous 3-D graphene structure, wherein the thermally conductive 3-D graphene-polymer composite material has a thermal conductivity of 10 W/m·K to 16 W/m·K.Type: GrantFiled: December 5, 2017Date of Patent: October 18, 2022Assignee: SABIC GLOBAL TECHNOLOGIES B.V.Inventors: Xufeng Zhou, Jingbo Ma, Shiyun Ding, Yunyang Liu, Ihab N. Odeh, Zhaoping Liu
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Publication number: 20200071487Abstract: A thermally conductive three-dimensional (3-D) graphene-polymer composite material, methods of making, and uses thereof are described. The thermally conductive three-dimensional (3-D) graphene-polymer composite material contains: (a) a porous 3-D graphene structure comprising a network of graphene layers that are attached to one another through a carbonized organic polymer bridging agent; and (b) a polymer material impregnated within the porous 3-D graphene structure, wherein the thermally conductive 3-D graphene-polymer composite material has a thermal conductivity of 10 W/m·K to 16 W/m·K.Type: ApplicationFiled: December 5, 2017Publication date: March 5, 2020Inventors: Xufeng ZHOU, Jingbo MA, Shiyun DING, Yunyang LIU, Ihab N. ODEH, Zhaoping LIU
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Publication number: 20190308916Abstract: A controlled-release fertilizer composition, methods of making, and uses thereof are described. The controlled-release fertilizer composition includes a composite graphene-carbon nanotube material having a three-dimensional open-celled network of graphene and carbon nanotubes and a fertilizer impregnated in the three-dimensional open-celled network of graphene and carbon nanotubes.Type: ApplicationFiled: November 22, 2017Publication date: October 10, 2019Inventors: Jian Zhang, Yexin Zhang, Hui Chen, Yunyang Liu, Ihab N. Odeh, Xufeng Zhou, Zhaoping Liu
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Patent number: 10385189Abstract: The present invention provides a graphene composite powder form material that is suitable for industrialized application. The graphene composite powder form material is composited by graphene materials and a high-molecular compound. The high-molecular compound is uniformly coated on surfaces of the graphene material. Any adjacent graphene materials are separated by the high-molecular compound. An apparent density of the graphene composite powder form material is larger than or equal to 0.02 g/cm3. Under an external pressure, the graphene materials in the graphene composite powder form material do not re-stack, and can be easily restored to original form, which benefit the storage and transportation. Besides, the graphene composite powder form material has a good compatibility in other material systems, which greatly broadens the application fields in the downstream products and successfully solves the problem in industrial application.Type: GrantFiled: January 16, 2016Date of Patent: August 20, 2019Assignees: NINGBO MORSH TECHNOLOGY CO., LTD., NINGBO INSTITUTE OF MATERIALS TECHNOLOGY AND ENGINEERING, CHINESE ACADEMY OF SCIENCESInventors: Zhaoping Liu, Xufeng Zhou, Changlin Tang, Zhihong Qing, Yongsheng Zhao
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Patent number: 10038182Abstract: The present invention provides a graphene coating-modified electrode plate for lithium secondary battery, characterized in that, the electrode plate comprises a current collector foil, graphene layers coated on both surfaces of the current collector foil, and electrode active material layers coated on the graphene layers. A graphene coating-modified electrode plate for lithium secondary battery according to the present invention comprises a current collector foil, graphene layers coated on both surfaces of the current collector foil, and electrode active material layers coated on the graphene layers. The graphene-modified electrode plate for lithium secondary battery thus obtained increases the electrical conductivity and dissipation functions of the electrode plate due to the better electrical conductivity and thermal conductivity of graphene. The present invention further provides a method for producing a graphene coating-modified electrode plate for lithium secondary battery.Type: GrantFiled: November 2, 2011Date of Patent: July 31, 2018Assignee: NINGBO INSTITUTE OF MATERIAL TECHNOLOGY AND ENGINEERING, CHINESE ACADEMY OF SCIENCESInventors: Zhaoping Liu, Changlin Tang, Jiangang Zhang, Xufeng Zhou, Huasheng Hu
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Publication number: 20160200580Abstract: The present invention provides a graphene composite powder form material that is suitable for industrialized application. The graphene composite powder form material is composited by graphene materials and a high-molecular compound. The high-molecular compound is uniformly coated on surfaces of the graphene material. Any adjacent graphene materials are separated by the high-molecular compound. An apparent density of the graphene composite powder form material is larger than or equal to 0.02 g/cm3. Under an external pressure, the graphene materials in the graphene composite powder form material do not re-stack, and can be easily restored to original form, which benefit the storage and transportation. Besides, the graphene composite powder form material has a good compatibility in other material systems, which greatly broadens the application fields in the downstream products and successfully solves the problem in industrial application.Type: ApplicationFiled: January 16, 2016Publication date: July 14, 2016Inventors: Zhaoping LIU, Xufeng ZHOU, Changlin TANG, Zhihong QING, Yongsheng ZHAO
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Patent number: 9162894Abstract: The present invention provides a method for preparing graphene, including reacting graphite in an acid solution in which an oxidant is present so as to obtain a graphene. Compared with the prior art, the advantages of the present invention reside in that, the graphene prepared by the method of the present invention has excellent quality and substantially increased yield and production rate, as compared with mechanical stripping, epitaxial growth, and chemical vapor deposition; and the graphene prepared by the method of the present invention has significantly improved quality, substantially reduced structural defects, and significantly increased conductivity, as compared with oxidation-reduction preparation in the solution-phase; besides, the method is also advantageous for a simple process, mild conditions, low cost, and very easy for scale production.Type: GrantFiled: April 28, 2011Date of Patent: October 20, 2015Assignee: NINGBO INSTITUTE OF MATERIAL TECHNOLOGY AND ENGINEERING, CHINESE ACADEMY OF SCIENCESInventors: Zhaoping Liu, Xufeng Zhou, Zhihong Qin, Changlin Tang
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Publication number: 20140315083Abstract: The present invention provides a graphene coating-modified electrode plate for lithium secondary battery, characterized in that, the electrode plate comprises a current collector foil, graphene layers coated on both surfaces of the current collector foil, and electrode active material layers coated on the graphene layers. A graphene coating-modified electrode plate for lithium secondary battery according to the present invention comprises a current collector foil, graphene layers coated on both surfaces of the current collector foil, and electrode active material layers coated on the graphene layers. The graphene-modified electrode plate for lithium secondary battery thus obtained increases the electrical conductivity and dissipation functions of the electrode plate due to the better electrical conductivity and thermal conductivity of graphene. The present invention further provides a method for producing a graphene coating-modified electrode plate for lithium secondary battery.Type: ApplicationFiled: November 2, 2011Publication date: October 23, 2014Applicant: NINGBO INSTITUTE OF MATERIAL TECHNOLOGY AND ENGINEERING, CHINESE ACADEMY OF SCIENCESInventors: Zhaoping Liu, Changlin Tang, Jiangang Zhang, Xufeng Zhou, Huasheng Hu
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Publication number: 20140037531Abstract: The present invention provides a method for preparing graphene, including reacting graphite in an acid solution in which an oxidant is present so as to obtain a graphene. Compared with the prior art, the advantages of the present invention reside in that, the graphene prepared by the method of the present invention has excellent quality and substantially increased yield and production rate, as compared with mechanical stripping, epitaxial growth, and chemical vapor deposition; and the graphene prepared by the method of the present invention has significantly improved quality, substantially reduced structural defects, and significantly increased conductivity, as compared with oxidation-reduction preparation in the solution-phase; besides, the method is also advantageous for a simple process, mild conditions, low cost, and very easy for scale production.Type: ApplicationFiled: April 28, 2011Publication date: February 6, 2014Applicant: NINGBO INSTITUTE OF MATERIAL TECHNOLOGY AND ENGINEERING, CHINESE ACADEMY OF SCIENCEInventors: Zhaoping Liu, Xufeng Zhou, Zhihong Qin, Changlin Tang
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Patent number: 8412828Abstract: A media resource management method, a media resource management device, a media resource management equipment, and a media resource management system are provided. The media resource management method includes the following steps. First, algorithm complexities of media resources are obtained according to a type of a service, in which the algorithm complexities are algorithm complexities of media resources required by the service. Next, an algorithm complexity of the service is determined according to the algorithm complexities of the media resources required by the service. Then, a capability of processing the service is determined according to the algorithm complexity of the service, and then the media resources are allocated.Type: GrantFiled: February 24, 2010Date of Patent: April 2, 2013Assignee: Huawei Technologies Co., Ltd.Inventors: Xufeng Zhou, Zongwu Wu, Xiangwen Zhu, Yan Mo, Yuan Li, Jiafeng Liu, Yuanlin Chen
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Publication number: 20120315550Abstract: The invention relates to a graphene-modified lithium iron phosphate positive electrode active material and a method for preparing the same, as well as a lithium-ion secondary cell based on this positive electrode active material. The positive electrode active material is prepared by a method in which graphene or graphene oxide and lithium iron phosphate are dispersed in an aqueous solution, agitated and ultrasonicated to mix homogeneously and for a mixture, dried to obtain a lithium iron phosphate material compounded with graphene or graphene oxide, and annealed at high temperature to obtain finally a graphene-modified lithium iron phosphate positive electrode active material. When compared with conventional modified lithium cells coated with carbon or doped with conductive polymers, the lithium-ion secondary cell based on this positive electrode active material features high cell capacity, good cycling performance of charge and discharge, long life and high cycle stability, and has great utility value.Type: ApplicationFiled: January 22, 2010Publication date: December 13, 2012Applicant: Ningbo Institute of Materials Technology and Engineering, Chinese Academy of SciencesInventors: Zhaoping Liu, Xufeng Zhou
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Publication number: 20100217870Abstract: A media resource management method, a media resource management device, a media resource management equipment, and a media resource management system are provided. The media resource management method includes the following steps. First, algorithm complexities of media resources are obtained according to a type of a service, in which the algorithm complexities are algorithm complexities of media resources required by the service. Next, an algorithm complexity of the service is determined according to the algorithm complexities of the media resources required by the service. Then, a capability of processing the service is determined according to the algorithm complexity of the service, and then the media resources are allocated.Type: ApplicationFiled: February 24, 2010Publication date: August 26, 2010Applicant: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Xufeng ZHOU, Zongwu WU, Xiangwen ZHU, Yan MO, Yuan LI, Jiafeng LIU, Yuanlin CHEN