Patents by Inventor Rongrong Jiang

Rongrong Jiang 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).

  • Publication number: 20210126250
    Abstract: A pre-lithiated silicon-based anode includes a silicon-based anode, lithium disposed on a surface or in an interior of the silicon-based anode, and a protective coating on the surface of the silicon-based anode. The pre-lithiated silicon-based anode allows subsequent processing to be performed safely in the atmosphere.
    Type: Application
    Filed: April 17, 2017
    Publication date: April 29, 2021
    Inventors: Rongrong Jiang, Jingjun Zhang, Yuqian Dou, Lei Wang, Chuanling Li, Yunhua Chen, Xiaogang Hao, Qiang Lu
  • Publication number: 20200067129
    Abstract: A method for prelithiating an anode of lithium ion batteries includes the following steps: (a) charging the battery to a voltage from about 4.2 to about 4.5 V at a first temperature; and (b) discharging the battery to a voltage from about 2.5 to about 3.2 V at a second temperature which is about 20 to 40° C. lower than the first temperature. Also provided is a lithium ion battery having an anode prelithiated by the method.
    Type: Application
    Filed: May 5, 2017
    Publication date: February 27, 2020
    Inventors: Xiaogang Hao, Rongrong Jiang
  • Publication number: 20200036035
    Abstract: A lithium ion battery and a method for producing the lithium ion battery are disclosed.
    Type: Application
    Filed: June 15, 2016
    Publication date: January 30, 2020
    Inventors: Xiaogang Hao, Rongrong Jiang, Lei Wang, Yuqian Dou
  • Publication number: 20190358331
    Abstract: A DDS carrier enabling sustained release of a drug and a production method therefor. Wherein, the drug is retained by a PEG-carboxy group-containing polymer graft. Among polymers, a carboxy group-containing polysaccharide can be suitably used. The PEG-carboxy group-containing polymer graft is a compound prepared by grafting PEG into the carboxy group-containing polysaccharide. When the carboxy group-containing polysaccharide is used, it can be produced by utilizing a condensation reaction of an aminated PEG and a carboxy group-containing polysaccharide in coexistence with a triazine-based condensing agent. Alternatively, the PEG-carboxy group-containing polysaccharide graft can be produced by utilizing a condensation reaction of PEG and a carboxy group-containing polysaccharide in coexistence with an acid.
    Type: Application
    Filed: August 9, 2019
    Publication date: November 28, 2019
    Inventors: Ying-shu Quan, Tooru Ooya, Rongrong Jiang, Fumio Kamiyama
  • Publication number: 20190190011
    Abstract: The present invention provides a method for preparing a negative electrode material for a battery, the method comprising the following steps: a) dry-mixing the following components, without adding any solvent, to obtain a dry mixture: polyacrylic acid, a silicon-based material, and an alkali metal hydroxide and/or an alkaline earth metal hydroxide, and an optionally present carbon material; and b) mixing the dry mixture obtained in step a) with an aqueous solvent, to obtain the negative electrode material. The present invention also provides a lithium ion battery and a solid-state battery, wherein a negative electrode of the lithium ion battery and the solid-state battery is prepared from the negative electrode material obtained by the method.
    Type: Application
    Filed: June 3, 2016
    Publication date: June 20, 2019
    Inventors: Xiaogang Hao, Rongrong Jiang
  • Publication number: 20190181427
    Abstract: Provided is an anode composition for lithium ion batteries, comprising a) a silicon-based active material; b) a carboxyl-containing binder; and c) a silane coupling agent. Also provided are a process for preparing an anode for lithium ion batteries and a lithium ion battery.
    Type: Application
    Filed: June 15, 2016
    Publication date: June 13, 2019
    Applicant: Robert Bosch GmbH
    Inventors: Jun Yang, Yitian Bie, Jingjun Zhang, Yuqian Dou, Lei Wang, Qiang Lu, Xiaogang Hao, Rongrong Jiang
  • Publication number: 20190181451
    Abstract: A silicon-based composite with three dimensional binding network and enhanced interaction between binder and silicon-based material comprises silicon-based material, treatment material, a binder containing carboxyl groups and conductive carbon, wherein the treatment material is selected from the group consisting of polydopamine or silane coupling agent with amine and/or imine groups; as well as relates to an electrode material and a lithium-ion battery comprising said silicon-based composite, and a process for preparing said silicon-based composite.
    Type: Application
    Filed: June 15, 2016
    Publication date: June 13, 2019
    Applicant: Robert Bosch GmbH
    Inventors: Jun Yang, Yitian Bie, Jingjun Zhang, Yuqian Dou, Rongrong Jiang, Lei Wang, Qiang Lu, Xiaogang Hao
  • Publication number: 20190181430
    Abstract: The present invention relates to a lithium-ion battery, a method for producing a lithium-ion battery, and a formation process for a lithium-ion battery.
    Type: Application
    Filed: June 15, 2016
    Publication date: June 13, 2019
    Applicant: Robert Bosch GmbH
    Inventors: Yuqian DOU, Jingjun ZHANG, Rongrong JIANG, Lei WANG, Xiaogang HAO, Qiang LU
  • Publication number: 20190181450
    Abstract: Provided is a silicon-based composite with three dimensional binding network and enhanced interaction between binder and silicon-based material, which comprises silicon-based material, treatment material, a binder containing carboxyl groups and conductive carbon, wherein the treatment material is selected from the group consisting of polydopamine or silane coupling agent with amine and/or imine groups. Also provided are an electrode material and a lithium-ion battery comprising the silicon-based composite, and a process for preparing the silicon-based composite.
    Type: Application
    Filed: June 15, 2016
    Publication date: June 13, 2019
    Applicant: Robert Bosch GmbH
    Inventors: Jun Yang, Yitian Bie, Jingjun Zhang, Yuqian Dou, Rongrong Jiang, Lei Wang, Qiang Lu, Xiaogang Hao
  • Publication number: 20180193465
    Abstract: A DDS carrier enabling sustained release of a drug and a production method therefor. Wherein, the drug is retained by a PEG-carboxy group-containing polymer graft. Among polymers, a carboxy group-containing polysaccharide can be suitably used. The PEG-carboxy group-containing polymer graft is a compound prepared by grafting PEG into the carboxy group-containing polysaccharide. When the carboxy group-containing polysaccharide is used, it can be produced by utilizing a condensation reaction of an aminated PEG and a carboxy group-containing polysaccharide in coexistence with a triazine-based condensing agent. Alternatively, the PEG-carboxy group-containing polysaccharide graft can be produced by utilizing a condensation reaction of PEG and a carboxy group-containing polysaccharide in coexistence with an acid.
    Type: Application
    Filed: July 13, 2016
    Publication date: July 12, 2018
    Inventors: Ying-shu Quan, Tooru Ooya, Rongrong Jiang, Fumio Kamiyama
  • Publication number: 20170054143
    Abstract: The present invention relates to a method for preparing a graphene/HE-NCM composite, wherein more than one HE-NCM particles of the formula (1) xLi2MnO3.(1?x)LiNiyCozMn1-y-zO2, wherein 0<x<1, 0<y<1, and 0<z<1, are in electrical contact with each other via one or multiple graphene flakes, said method including: a) dispersing HE-NCM particles in a solution of graphene oxide by ultrasonication to give a dispersion; b) lyophilization of the dispersion to give a graphene oxide/HE-NCM composite; c) thermal decomposition of the graphene oxide/HE-NCM composite to give the graphene/HE-NCM composite. The present invention further relates to a graphene/HE-NCM composite for lithium ion battery prepared by said method, an electrode material and a lithium ion battery comprising said graphene/HE-NCM composite.
    Type: Application
    Filed: February 18, 2014
    Publication date: February 23, 2017
    Inventors: Mengyan Hou, Chuanling Li, Rongrong Jiang, Jinlong Liu, Lei Wang, Longjie Zhou, Yongyao Xia, Long Chen, Shaoshuai Guo
  • Publication number: 20160190559
    Abstract: A coated lithium-rich layered oxide consisting of: a lithium-rich layered oxide represented by the formula xLi2MO3(1?x) LiM?O2, wherein M is Mn, Ti, Zr or any combination thereof, M? is Mn, Ni, Co or any combination thereof, and 0<x<1, and an outer layer formed by gas deposition of P2O5. A process for producing the coated lithium-rich layered oxide, a cathode comprising the coated lithium-rich layered oxide, and a rechargeable lithium battery.
    Type: Application
    Filed: July 23, 2013
    Publication date: June 30, 2016
    Inventors: Mengyan Hou, Yonggang Wang, Roger Zhou, Rongrong Jiang, Jinlong Liu, Yongyao Xia
  • Publication number: 20140356714
    Abstract: The invention relates to a process for preparing a core-shell structured lithiated manganese oxide, comprising the steps of providing spinel LiMxMn2-xO4 particles, where M is one or more metal ions selected from the group consisting of Li, Mg, Cr, Al, Co, Ni, Zn, Cu, and La, and 0?x<1, as core particles, and subjecting the spinel particles to a heat-treatment with a reactive chemical reagent in the form of liquid or gas to form a shell layer on the surface of the core particles, and to the prepared core-shell structured lithiated manganese oxide, and its use as a cathode material for a lithium ion battery
    Type: Application
    Filed: January 16, 2012
    Publication date: December 4, 2014
    Applicant: ROBERT BOSCH GMBH
    Inventors: Roger Zhou, Yongyao Xia, Rongrong Jiang, Yonggang Wang, Wangjun Cui, Yuqian Dou, Long Chen