Patents by Inventor Ji-Guang Zhang

Ji-Guang 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).

  • Patent number: 11127980
    Abstract: Localized superconcentrated electrolytes (LSEs) for use in systems with silicon-based or carbon/silicon composite-based anodes are disclosed. The LSEs include an active salt, a nonaqueous solvent in which the active salt is soluble, and a diluent in which the active salt has a solubility at least 10 times less than solubility of the active salt in the nonaqueous solvent. Systems including the LSEs also are disclosed.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: September 21, 2021
    Assignee: Battelle Memorial Institute
    Inventors: Ji-Guang Zhang, Haiping Jia, Xiaolin Li, Wu Xu
  • Patent number: 11094966
    Abstract: Disclosed herein are embodiments of an electrolyte that is stable and efficient at high voltages. The electrolyte can be used in combination with certain cathodes that exhibit poor activity at such high voltages with other types of electrolytes and can further be used in combination with a variety of anodes. In some embodiments, the electrolyte can be used in battery systems comprising a lithium cobalt oxide cathode and lithium metal anodes, silicon anodes, silicon/graphite composite anodes, graphite anodes, and the like.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: August 17, 2021
    Assignee: Battelle Memorial Institute
    Inventors: Xiaodi Ren, Wu Xu, Ji-Guang Zhang
  • Publication number: 20210229033
    Abstract: Polyethylenimine coated polymeric beads comprising a polymer that comprises, based on the weight of the polymer, from 25% to 75% by weight of structural units of an acetoacetoxy or acetoacetamide functional monomer, and from 25% to 75% by weight of structural units of a polyvinyl monomer; the polyethylenimine having a number average molecular weight of 300 g/mol or more; the polyethylenimine coated polymeric beads having a specific surface area in the range of from 20 to 400 m2/g; a process of preparing the polyethylenimine coated polymeric beads; a gas filter device comprising the polyethylenimine coated polymeric beads as a filter medium; and a method of removing aldehydes from air containing aldehydes, comprising contacting the air with the polyethylenimine coated polymeric beads.
    Type: Application
    Filed: July 4, 2018
    Publication date: July 29, 2021
    Applicant: Dow Global Technologies LLC
    Inventors: Ji Guang Zhang, Jian Zou, Hongyu Chen, Shaoguang Feng, Wenbin Yao, Haiying Li, Xuemei Zhai
  • Publication number: 20210218062
    Abstract: Electrolytes for lithium ion batteries with carbon-based, silicon-based, or carbon- and silicon-based anodes include a lithium salt; a nonaqueous solvent comprising at least one of the following components: (i) an ester, (ii) a sulfur-containing solvent, (iii) a phosphorus-containing solvent, (iv) an ether, (v) a nitrile, or any combination thereof, wherein the lithium salt is soluble in the solvent; a diluent comprising a fluoroalkyl ether, a fluorinated orthoformate, a fluorinated carbonate, a fluorinated borate, or a combination thereof, wherein the lithium salt has a solubility in the diluent at least 10 times less than a solubility of the lithium salt in the solvent; and an additive having a different composition than the lithium salt, a different composition than the solvent, and a different composition than the diluent.
    Type: Application
    Filed: January 8, 2021
    Publication date: July 15, 2021
    Applicant: Battelle Memorial Institute
    Inventors: Wu Xu, Ji-Guang Zhang, Hao Jia, Xianhui Zhang, Xia Cao, Sujong Chae, Ran Yi, Qiuyan Li, Won-Jin Kwak, Xiaolin Li
  • Publication number: 20210122641
    Abstract: Stabilized porous silicon particles are disclosed. The particles include a porous silicon particle comprising a plurality of interconnected silicon nanoparticles and (i) a heterogeneous layer comprising a discontinuous SiC coating that is discontinuous across a portion of pore surfaces and across a portion of an outer surface of the porous silicon particle, and a continuous carbon coating that covers outer surfaces of the discontinuous SiC coating, and remaining portions of the pore surfaces and the outer surface of the porous silicon particle, or (ii) a continuous carbon coating on surfaces of the porous silicon particle, including the outer surface and pore surfaces. Methods of making the stabilized porous silicon particles also are disclosed.
    Type: Application
    Filed: May 20, 2020
    Publication date: April 29, 2021
    Applicant: Battelle Memorial Institute
    Inventors: Ji-Guang Zhang, Ran Yi, Qiuyan Li, Sujong Chae, Xiaolin Li, Yaobin Xu, Chongmin Wang
  • Patent number: 10854923
    Abstract: Low flammability and nonflammable localized superconcentrated electrolytes (LSEs) for stable operation of lithium and sodium ion batteries are disclosed. Electrochemical devices including the low flammability and nonflammable LSEs are also disclosed. The low flammability and nonflammable LSEs include an active salt, a solvent comprising a flame retardant compound, wherein the active salt is soluble in the solvent, and a diluent in which the active salt is insoluble or poorly soluble. The LSE may further include a cosolvent, such as a carbonate, a sulfone, a sulfite, a sulfate, a carboxylate, an ether, a nitrogen-containing solvent, or any combination thereof. In certain embodiments, such as when the solvent and diluent are immiscible, the LSE further includes a bridge solvent.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: December 1, 2020
    Assignee: Battelle Memorial Institute
    Inventors: Wu Xu, Shuru Chen, Ji-Guang Zhang, Xia Cao, Haiping Jia, Bin Liu, Xiaodi Ren
  • Publication number: 20200161635
    Abstract: An anode active material comprises a silicon-carbon secondary particle comprising a composite having an exterior conformal carbon coating and formed of type I primary particles. Each type I primary particle comprises a core particle of interconnected silicon, the interconnected silicon formed of nano-sized silicon particles each connected to at least one other particle, inner pores internal to the core particle and defined by the interconnected silicon, an internal carbon coating on internal wall surfaces of the inner pores and a conformal carbon coating on the core particle.
    Type: Application
    Filed: November 18, 2019
    Publication date: May 21, 2020
    Inventors: Zuqin Liu, Richard M. Mank, Hyea Kim, Hongli Dai, Sunho Kang, Ji-Guang Zhang, Ran Yi, Qiuyan Li, Xiaolin Li, Wu Xu, Rajankumar L. Patel, Hyung-Seok Lim, Chongmin Wang, Langli Luo, Yang He
  • Publication number: 20200161706
    Abstract: Localized superconcentrated electrolytes (LSEs) and electrochemical devices including the LSEs are disclosed. The LSE includes an active salt, a solvent in which the active salt is soluble, and a diluent in which the active salt is insoluble or poorly soluble, wherein the diluent includes a fluorinated orthoformate.
    Type: Application
    Filed: November 19, 2019
    Publication date: May 21, 2020
    Applicant: Battelle Memorial Institute
    Inventors: Xia Cao, Ji-Guang Zhang, Wu Xu
  • Patent number: 10547088
    Abstract: Embodiments of a method for cycling a rechargeable alkali metal battery with high Coulombic efficiency (CE) are disclosed. A slow charge/rapid discharge protocol is used in conjunction with a concentrated electrolyte to achieve high CE in rechargeable lithium and sodium batteries, include anode-free batteries. In some examples, the CE is ?99.8%.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: January 28, 2020
    Assignee: Battelle Memorial Institute
    Inventors: Ji-Guang Zhang, Brian D. G. Adams, Wu Xu, Jianming Zheng
  • Patent number: 10472571
    Abstract: Low flammability and nonflammable localized superconcentrated electrolytes (LSEs) for stable operation of electrochemical devices, such as rechargeable batteries, supercapacitors, and sensors, are disclosed. Electrochemical devices, such as rechargeable batteries, supercapacitors, and sensors, including the low flammability and nonflammable LSEs are also disclosed. The low flammability and nonflammable LSEs include an active salt, a solvent comprising a flame retardant compound, wherein the active salt is soluble in the solvent, and a diluent in which the active salt is insoluble or poorly soluble. In certain embodiments, such as when the solvent and diluent are immiscible, the LSE further includes a bridge solvent.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: November 12, 2019
    Assignee: Battelle Memorial Institute
    Inventors: Ji-Guang Zhang, Shuru Chen, Wu Xu
  • Publication number: 20190252689
    Abstract: A one-step in-situ electrochemical pre-charging strategy to generate thin protective films simultaneously on the surfaces of both carbon-based air-electrode and metal anode under an inert atmosphere is disclosed. The thin-films are formed from the decomposition of electrolyte during the in-situ electrochemical pre-charging process in an inert environment and can protect both a carbon air-electrode and a metal anode prior to conventional metal-oxygen discharge/charge cycling where reactive reduced oxygen species are formed. Lithium-oxygen cells after such pre-treatment demonstrate significantly extended cycle life which is far more than those without pre-treatment.
    Type: Application
    Filed: October 11, 2017
    Publication date: August 15, 2019
    Applicant: Battelle Memorial Institute
    Inventors: Wu Xu, Bin Liu, Ji-Guang Zhang
  • Patent number: 10367189
    Abstract: An anode-free rechargeable battery is disclosed. The battery includes an anode current collector and a cathode containing an active cation Mn+, where n=1, 2, or 3. The anode-free rechargeable battery further includes a separator placed between the anode current collector and the cathode. The anode-free rechargeable battery also includes an electrolyte including a salt or salt mixture containing an active cation Mn+ dissolved in a solvent or solvent mixture.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: July 30, 2019
    Assignee: Battelle Memorial Institute
    Inventors: Ji-Guang Zhang, Jiangfeng Qian, Wu Xu, Wesley A. Henderson
  • Patent number: 10367232
    Abstract: Embodiments of localized superconcentrated electrolytes (LSEs) for stable operation of electrochemical devices, such as rechargeable batteries, supercapacitors, and sensors, are disclosed. Electrochemical devices, such as rechargeable batteries, supercapacitors, and sensors, including the LSEs are also disclosed. The LSEs include an active salt, a solvent in which the active salt is soluble, and a diluent in which the active salt is insoluble or poorly soluble. In certain embodiments, such as when the solvent and diluent are immiscible, the LSE further includes a bridge solvent.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: July 30, 2019
    Assignee: Battelle Memorial Institute
    Inventors: Ji-Guang Zhang, Jianming Zheng, Shuru Chen
  • Publication number: 20190148775
    Abstract: Localized superconcentrated electrolytes (LSEs) for use in systems with silicon-based or carbon/silicon composite-based anodes are disclosed. The LSEs include an active salt, a nonaqueous solvent in which the active salt is soluble, and a diluent in which the active salt has a solubility at least 10 times less than solubility of the active salt in the nonaqueous solvent. Systems including the LSEs also are disclosed.
    Type: Application
    Filed: January 14, 2019
    Publication date: May 16, 2019
    Applicant: Battelle Memorial Institute
    Inventors: Ji-Guang Zhang, Haiping Jia, Xiaolin Li
  • Publication number: 20190140322
    Abstract: Disclosed herein are embodiments of an electrolyte that is stable and efficient at high voltages. The electrolyte can be used in combination with certain cathodes that exhibit poor activity at such high voltages with other types of electrolytes and can further be used in combination with a variety of anodes. In some embodiments, the electrolyte can be used in battery systems comprising a lithium cobalt oxide cathode and lithium metal anodes, silicon anodes, silicon/graphite composite anodes, graphite anodes, and the like.
    Type: Application
    Filed: December 21, 2018
    Publication date: May 9, 2019
    Inventors: Xiaodi Ren, Wu Xu, Ji-Guang Zhang
  • Publication number: 20190123390
    Abstract: Low flammability and nonflammable localized superconcentrated electrolytes (LSEs) for stable operation of lithium and sodium ion batteries are disclosed. Electrochemical devices including the low flammability and nonflammable LSEs are also disclosed. The low flammability and nonflammable LSEs include an active salt, a solvent comprising a flame retardant compound, wherein the active salt is soluble in the solvent, and a diluent in which the active salt is insoluble or poorly soluble. The LSE may further include a cosolvent, such as a carbonate, a sulfone, a sulfite, a sulfate, a carboxylate, an ether, a nitrogen-containing solvent, or any combination thereof. In certain embodiments, such as when the solvent and diluent are immiscible, the LSE further includes a bridge solvent.
    Type: Application
    Filed: August 31, 2018
    Publication date: April 25, 2019
    Inventors: Wu Xu, Shuru Chen, Ji-Guang Zhang, Xia Cao, Haiping Jia, Bin Liu, Xiaodi Ren
  • Patent number: 10246337
    Abstract: Embodiments of a safe, low-temperature reaction system and method for preparing porous silicon are disclosed. The porous silicon is prepared from porous silica, a low-melting metal halide, and a metal comprising aluminum, magnesium, or a combination thereof. Advantageously, embodiments of the disclosed methods can be performed at temperatures ?400° C. Silicon produced by the disclosed methods has a porosity that is equal to or greater than the porous silica precursor. The porous silicon is suitable for use in electrodes.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: April 2, 2019
    Assignee: Battelle Memorial Institute
    Inventors: Xiaolin Li, Ji-Guang Zhang, Jun Liu
  • Patent number: 10170795
    Abstract: Embodiments of a non-aqueous electrolyte for a rechargeable sodium (Na)-based battery comprise a sodium salt and a nonaqueous solvent, the electrolyte having a sodium salt concentration ?2.5 M or a solvent-sodium salt mole ratio ?4:1. Na-based rechargeable batteries including the electrolyte exhibit both high cycling stability and high coulombic efficiency (CE). Some embodiments of the disclosed batteries attain a CE?80% within 10-30 charge-discharge cycles and maintain a CE?80% for at least 100 charge-discharge cycles. In certain embodiments, the battery is an anode-free battery in the as-assembled initial state.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: January 1, 2019
    Assignee: Battelle Memorial Institute
    Inventors: Ji-Guang Zhang, Ruiguo Cao, Wesley A. Henderson, Kuber Mishra, Wu Xu
  • Publication number: 20180254524
    Abstract: Embodiments of localized superconcentrated electrolytes (LSEs) for stable operation of electrochemical devices, such as rechargeable batteries, supercapacitors, and sensors, are disclosed. Electrochemical devices, such as rechargeable batteries, supercapacitors, and sensors, including the LSEs are also disclosed. The LSEs include an active salt, a solvent in which the active salt is soluble, and a diluent in which the active salt is insoluble or poorly soluble. In certain embodiments, such as when the solvent and diluent are immiscible, the LSE further includes a bridge solvent.
    Type: Application
    Filed: May 18, 2017
    Publication date: September 6, 2018
    Applicant: Battelle Memorial Institute
    Inventors: Ji-Guang Zhang, Jianming Zheng, Shuru Chen
  • Publication number: 20180251681
    Abstract: Low flammability and nonflammable localized superconcentrated electrolytes (LSEs) for stable operation of electrochemical devices, such as rechargeable batteries, supercapacitors, and sensors, are disclosed. Electrochemical devices, such as rechargeable batteries, supercapacitors, and sensors, including the low flammability and nonflammable LSEs are also disclosed. The low flammability and nonflammable LSEs include an active salt, a solvent comprising a flame retardant compound, wherein the active salt is soluble in the solvent, and a diluent in which the active salt is insoluble or poorly soluble. In certain embodiments, such as when the solvent and diluent are immiscible, the LSE further includes a bridge solvent.
    Type: Application
    Filed: October 19, 2017
    Publication date: September 6, 2018
    Applicant: Battelle Memorial Institute
    Inventors: Ji-Guang Zhang, Shuru Chen, Wu Xu