Patents by Inventor David Mitlin

David Mitlin 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: 20210399285
    Abstract: An electrode for an electrochemical energy storage device having interlayers of vanadium oxygen hydrate (VOH); and polyaniline (PANI) intercalated in the interlayers of VOH. A method for making the same and an electrochemical energy storage device including the aforementioned electrode are also discussed herein.
    Type: Application
    Filed: June 15, 2021
    Publication date: December 23, 2021
    Inventors: Xing Li, David Mitlin, Mingshan Wang
  • Publication number: 20210167358
    Abstract: A carbon-based material including at least two heteroatoms, wherein at least one of the at least two heteroatoms is covalently bonded to carbon in the carbon-based material. An electrode including the carbon-based material, and a process for synthesizing the carbon-based material.
    Type: Application
    Filed: December 3, 2020
    Publication date: June 3, 2021
    Inventors: Huanlei Wang, David Mitlin
  • Patent number: 10950866
    Abstract: An energy storage device including an anode, a cathode, at least one of the anode and the cathode including a carbon nanosheet having an active material, such as selenium, in and/or on the carbon nanosheet, and an electrolyte. A carbon material including a carbon nanosheet derived from a biological precursor, such as nanocrystalline cellulose, including a plurality of micropores and an active material impregnated into at least a portion of the micropores of the carbon nanosheet.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: March 16, 2021
    Assignee: Sparkle Power LLC
    Inventors: David Mitlin, Jia Ding
  • Publication number: 20210050576
    Abstract: A separator for an electrochemical energy storage device that includes a polypropylene layer and a plurality of ceramic particles selected from at least one of ceramic microparticles and ceramic nanoparticles, wherein the ceramic particles are coated on the polypropylene layer. An electrochemical energy storage device including the aforementioned separator is also disclosed.
    Type: Application
    Filed: August 12, 2020
    Publication date: February 18, 2021
    Inventors: Xing Li, David Mitlin
  • Publication number: 20210013504
    Abstract: A material for use as an electrode in an electrochemical storage device, the material including: a composite including at least one manganese oxide and at least one ion-active carbon. An electrode for an electrochemical storage device and an electrochemical storage device is also disclosed.
    Type: Application
    Filed: July 9, 2020
    Publication date: January 14, 2021
    Inventor: David Mitlin
  • Publication number: 20200381706
    Abstract: A material for use as an electrode in an electrochemical storage device, the material includes at least one layer of defect-free graphene; an active phase proximate at least one surface of the at least one layer of defect-free graphene; and a binder system and methods for making the same.
    Type: Application
    Filed: June 1, 2020
    Publication date: December 3, 2020
    Inventors: Wei Liu, David Mitlin
  • Publication number: 20200381736
    Abstract: A defect-free graphene and a method of making a defect-free graphene. A method for synthesizing defect-free graphene, the method including providing a graphene precursor to a flow-aided sonication apparatus, the graphene precursor comprised of particulates, wherein the flow-aided sonication apparatus comprises: a flow channel positioned along an axis, the flow channel having a first opening and a second opening, the second opening opposite of the first opening, wherein the graphene precursor enters the flow channel through the first opening; aligning edges of the particulates parallel to axis A; and imposing sonication shockwave to the edges of the aligned particulates of the graphene precursor, wherein the sonication shockwave is imposed to the graphene precursor in a propagation direction perpendicular to the edges of the particulates such that planes of the sonication shockwave are parallel to the edges of the particulates, thereby synthesizing defect-free graphene.
    Type: Application
    Filed: February 24, 2020
    Publication date: December 3, 2020
    Inventors: David Mitlin, Wei Liu
  • Publication number: 20200312578
    Abstract: A novel carbon material for use in electrochemical energy storage devices. A carbon material derived from a natural precursor or synthetic precursor, the carbon material including: a mean particle size between 1-40 microns; a BET surface area between 750-3500 m2/g; and a pore size distribution being a combination of microporosity, mesoporosity and/or macroporosity.
    Type: Application
    Filed: March 25, 2020
    Publication date: October 1, 2020
    Inventor: David Mitlin
  • Publication number: 20200303136
    Abstract: An electrochemical energy storage device, including a potassium ion capacitor. One embodiment is a device having an asymmetric architecture based on bulk K ion insertion, partially ordered, dense hard carbon anode (HC) opposing heteroatom-rich K ion adsorption, high surface area, mesoporous cathode (AC). Another embodiment is a double hybridized device employing a symmetric configuration AC-AC with a carbonate-based high voltage electrolyte and multifunctional high surface area K ion adsorption electrodes. The electrode carbons are derived from natural precursors including hemp, cannabis, mulberry branches, and/or silkworm excrement.
    Type: Application
    Filed: March 18, 2020
    Publication date: September 24, 2020
    Inventors: Ziqiang Xu, Mengqiang Wu, David Mitlin
  • Publication number: 20200295376
    Abstract: A battery electrode including a plurality of carbon-based spheres, wherein at least one of said carbon-based spheres includes a shell and a hollow interior, the shell formed from a carbon precursor grafted with heteroatom moieties. A battery that includes a cathode and an anode, wherein either the cathode or the anode includes a plurality of carbon-based spheres, wherein at least one of said carbon-based spheres includes a shell and a hollow interior, the shell formed from a carbon precursor grafted with heteroatom moieties. A process for producing a carbon-based sphere.
    Type: Application
    Filed: March 11, 2020
    Publication date: September 17, 2020
    Inventors: David Mitlin, Jia Ding
  • Patent number: 10707026
    Abstract: An energy storage device, such as a sodium ion capacitor, including an anode and a cathode, at least one of the anode and the cathode including a nitrogen and oxygen functionalized carbon (NOFC). The NOFC has a nitrogen content greater than 4 wt %, such as 13 wt %, an oxygen content greater than 8 wt %, such as 11 wt %, and a surface area greater than 800 m2g?1, such as 945 m2g?1. The energy storage device has favorable reversible and rate capability, such as 437 mAhg?1 at 100 mAg?1, and 185 mAhg?1 at 1600 mA g?1.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: July 7, 2020
    Assignee: Sparkle Power LLC
    Inventors: David Mitlin, Jia Ding
  • Publication number: 20200203085
    Abstract: A double hybridized ion capacitor including a positive electrode and a negative electrode. Each of the positive electrode and negative electrode includes high surface area carbon. In one embodiment, the high surface area carbon is derived from gulfweed. The double hybridized ion capacitor delivers 127 W h kg?1 at 332 W kg?1 and 40 W h kg?1 at 33,573 W kg?1.
    Type: Application
    Filed: December 20, 2019
    Publication date: June 25, 2020
    Inventors: Huanlei Wang, David Mitlin
  • Publication number: 20200194189
    Abstract: An electrode of an energy storage device and methods of fabrication are provided which include: pyrolyzing a carbon-containing precursor to form a stabilized-carbonized material; and annealing the stabilized-carbonized material to form a structurally-modified activated carbon material. The structurally-modified activated carbon material includes a tunable pore size distribution and an electrochemically-active surface area. The electrochemically-active surface area of the structurally-modified activated carbon material is greater than a surface area of graphene having at least one layer, the surface area of the graphene having at least one layer being about 2630 m2 g1.
    Type: Application
    Filed: February 21, 2020
    Publication date: June 18, 2020
    Inventors: David Mitlin, Jesse Pokrzywinski
  • Patent number: 10680300
    Abstract: Carbon nanosheets fabricated by carbonization and activation or by carbonization alone. The nanosheets possess a disordered structure for copious reversible binding of ions at the carbon defects. They are also hierarchically micro-meso-macro porous, allowing facile ion transport at high rates both through the pore-filling electrolyte and in the solid-state. Also, a combined battery—supercapacitor energy storage device using the carbon nanosheets as one or both of the electrodes therein. Tuning the mass-loading ratio of the carbon nanosheets in the two electrodes configures the carbon nanosheets to operate either as a bulk insertion electrode (anode) or a surface adsorption electrode (cathode). The energy storage device may further include a housing with a form factor of a commercial battery.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: June 9, 2020
    Assignee: Sparkle Power LLC
    Inventor: David Mitlin
  • Patent number: 10614965
    Abstract: An electrode of an energy storage device and methods of fabrication are provided which include: pyrolyzing a carbon-containing precursor to form a stabilized-carbonized material; and annealing the stabilized-carbonized material to form a structurally-modified activated carbon material. The structurally-modified activated carbon material includes a tunable pore size distribution and an electrochemically-active surface area. The electrochemically-active surface area of the structurally-modified activated carbon material is greater than a surface area of graphene having at least one layer, the surface area of the graphene having at least one layer being about 2630 m2 g?1.
    Type: Grant
    Filed: November 14, 2016
    Date of Patent: April 7, 2020
    Assignee: Clarkson University
    Inventors: David Mitlin, Jesse Pokrzywinski
  • Publication number: 20190259544
    Abstract: An energy storage device, such as a sodium ion capacitor, including an anode and a cathode, at least one of the anode and the cathode including a nitrogen and oxygen functionalized carbon (NOFC). The NOFC has a nitrogen content greater than 4 wt %, such as 13 wt %, an oxygen content greater than 8 wt %, such as 11 wt %, and a surface area greater than 800 m2g?1, such as 945 m2g?1. The energy storage device has favorable reversible and rate capability, such as 437 mAhg?1 at 100 mAg?1, and 185 mAhg?1 at 1600 mA g?1.
    Type: Application
    Filed: February 25, 2019
    Publication date: August 22, 2019
    Inventors: David Mitlin, Jia Ding
  • Patent number: 10326131
    Abstract: An anode for a battery including an electrochemically active material including a ternary alloy of tin (Sn), germanium (Ge), and antimony (Sb). A battery including the anode, a cathode, a separator, and an electrolyte. The ternary alloy may include SnxGeySbz, where x+y+z=100, and x?y or x?z. The alloy may include a multiphase microstructure with an amorphous phase and nanocrystalline phase, each of the phases being ion active.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: June 18, 2019
    Assignee: Sparkle Power LLC
    Inventor: David Mitlin
  • Patent number: 10256050
    Abstract: An energy storage device, such as a sodium ion capacitor, including an anode and a cathode, at least one of the anode and the cathode including a nitrogen and oxygen functionalized carbon (NOFC). The NOFC has a nitrogen content greater than 4 wt %, such as 13 wt %, an oxygen content greater than 8 wt %, such as 11 wt %, and a surface area greater than 800 m2g?1, such as 945 m2g?1. The energy storage device has favorable reversible and rate capability, such as 437 mAhg?1 at 100 mAg?1, and 185 mAhg?1 at 1600 mA g?1.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: April 9, 2019
    Assignee: SPARKLE POWER LLC
    Inventor: David Mitlin
  • Publication number: 20190097275
    Abstract: A material used as an electrode or an additive in an electrochemical storage device, the material including a carbon material; and a compound selected from the group consisting of Se, SeySx, TeySx, TezSeySx and combinations thereof, where x, y and z are any value between 0 and 1, the sum of y and x being 1, and the sum of z, y and x being 1, the compound impregnated in the carbon material. An electrode including the aforementioned material and a method to improve performance of an electrochemical storage device, the method including incorporating the aforementioned material into the electrochemical storage device.
    Type: Application
    Filed: September 24, 2018
    Publication date: March 28, 2019
    Inventor: David Mitlin
  • Patent number: 10170251
    Abstract: A combined hydrothermal and activation process that uses hemp bast fiber as the precursor to achieve graphene-like carbon nanosheets, a carbon nanosheet including carbonized crystalline cellulose, a carbon nanosheet formed by carbonizing crystalline cellulose, a capacitative structure includes interconnected carbon nanosheets of carbonized crystalline cellulose, a method of forming a nanosheet including carbonizing crystalline cellulose to create carbonized crystalline cellulose. The interconnected two-dimensional carbon nanosheets also contain very high levels of mesoporosity.
    Type: Grant
    Filed: September 21, 2016
    Date of Patent: January 1, 2019
    Assignee: The Governors of the University of Alberta
    Inventors: David Mitlin, Huanlei Wang, Zhanwei Xu, Zhi Li, Chris Holt