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Energy Storage

Vehicle Energy Storage Patents

2017

  • Application No. 15/334,240
    Publication No. 2017/0047581 A1
    Issued Feb. 16, 2017.
    Additives to Enhance Electrode Wetting and Performance and Methods of Making Electrodes Comprising the Same
    Abstract: Electrodes having nanostructure and/or utilizing nanoparticles of active materials and having high mass loadings of the active materials can be made to be physically robust and free of cracks and pinholes. The electrodes include nanoparticles having electroactive material, which nanoparticles are aggregated with carbon into larger secondary particles. The secondary particles can be bound with a binder to form the electrode. The electrodes can further comprise additives that enhance electrode wetting thereby improving overall electrode performance.
  • Application No. 15/240,937
    Publication No. 2017/0047619 A1
    Issued Feb. 16, 2017.
    Battery Cell and In Situ Battery Electrode Analysis Method
    Abstract: Battery cells are provided that can include: a housing defining a chamber having a fluid inlet and outlet; an anode at one side of the housing; a cathode at another side of the housing opposing and spaced apart from the anode a sufficient amount to allow for electrolyte between the anode and cathode; and the other side of the chamber defined by an ion permeable member. Methods for in situ battery electrode analysis are provided and these methods can include: providing a battery cell having an anode and a cathode; exposing the battery cell to an ion beam while the battery cell is operational to form secondary ions; and detecting the secondary ions to analyze the battery.

2016

  • Application No. 15/142,322
    Publication No. 2016/0240896 A1
    Issued Aug. 18, 2016.
    High coulombic efficiency cycling of metal batteries
    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%.
  • Application No. 14/529,840
    Publication No. 2016/0126582 A1
    Issued May. 5, 2016.
    Preformation of Stable Solid Electrolyte Interface Films on Graphite-Material Electrodes
    Abstract: Disclosed are preformed solid electrolyte interface (SEI) film graphite electrodes in lithium-sulfur based chemistry energy storage systems and methods of making the preformed SEI films on graphite electrodes to expand the use of graphite-based electrodes in previously non-graphite anode energy systems, such as lithium-sulfur battery systems. Also disclosed are lithium-ion sulfur battery systems comprising electrolytes that do not include an alkyl carbonate, such as those that do not include EC, and graphite anodes having preformed alkyl carbonate, such as EC-based SEI films.
  • Application No. 14/530,562
    Publication No. 2016/0126589 A1
    Issued May. 5, 2016.
    Electrolyte for Batteries with Regenerative Solid Electrolyte Interface
    Abstract: An energy storage device comprising an anode and a solution containing electrolyte composition wherein the solute concentration in the electrolyte composition is sufficiently high to form a regenerative solid electrolyte interface layer on a surface of the anode only during charging of the energy storage device, wherein the regenerative layer comprises at least one solute or solvated solute from the electrolyte composition.
  • Application No. 14/523/554
    Publication No. 2016/0118685 A1
    Issued Apr. 28, 2016.
    Methods and Compositions for Lithium Ion Batteries
    Abstract: A solid-state lithium ion battery is disclosed. The battery includes an anode containing an anode active material. The battery also includes a cathode containing a cathode active material. The battery further includes a solid-state electrolyte material. The electrolyte material contains a salt or salt mixture with a melting point below approximately 300 degrees Celsius. The battery has an operating temperature of less than about 80 degrees Celsius.
  • Application No. 14/869,647
    Publication No. 2016/0072151 A1
    Issued Mar. 10, 2016.
    Electrolyte for High Efficiency Cycling of Sodium Metal and Rechargeable Sodium-Based Batteries Comprising the Electrolyte
    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.

2015

  • Application No. 14/595,065
    Publication No. 2015/0125759 A1
    Issued May. 7, 2015.
    Solid Electrolyte Interphase Film-Suppression Additives
    Abstract: An energy storage device comprising: (A) an anode comprising graphite; and (B) an electrolyte composition comprising: (i) at least one carbonate solvent; (ii) an additive selected from CsPF6, RbPF6, Sr(PF6)2, Ba(PF6)2, or a mixture thereof; and (iii) a lithium salt.

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