Rapid pyrolysis to form super ionic conducting lithium garnets

    公开(公告)号:US11535525B2

    公开(公告)日:2022-12-27

    申请号:US17157286

    申请日:2021-01-25

    申请人: UT-Battelle, LLC

    摘要: A method of preparing a lithium-ion conducting garnet via low-temperature solid-state synthesis is disclosed. The lithium-ion conducting garnet comprises a substantially phase pure aluminum-doped cubic lithium lanthanum zirconate (Li7La3Zr2O14). The method includes preparing nanoparticles comprising lanthanum zirconate (La2Zr2O7-np) via pyrolysis-mediated reaction of lanthanum nitrate (La(NO3)3) and zirconium nitrate (Zr(NO3)4). The method also includes pyrolyzing a solid-state mixture comprising the La2Zr2O7-np, lithium nitrate (LiNO3), and aluminum nitrate (Al(NO3)3) to give the Li7La3Zr2O14 and thereby prepare the lithium-ion conducting garnet. A lithium-ion conducting garnet prepared via the method is also disclosed.

    METHOD OF MAKING A PASSIVELY IMPACT RESISTANT BATTERY

    公开(公告)号:US20220166065A1

    公开(公告)日:2022-05-26

    申请号:US17570982

    申请日:2022-01-07

    申请人: UT-BATTELLE, LLC

    摘要: A method of making a passively impact resistant battery includes the steps of providing a porous separator material having pores and a surface, and providing a suspension composition including shear thickening enabling particles and a particle suspension solvent for suspending the shear thickening enabling particles. The shear thickening particles have a polydispersity index of no greater than 0.1, an average particle size of in a range of 50 nm to 1 um, and an absolute zeta potential of greater than ±40 mV. The suspension composition is applied to the separator material, wherein a portion of the particles and suspension solvent penetrate the pores. The suspension solvent is evaporated from the separator material. An anode layer and a cathode layer are applied. An electrolyte composition is applied between the anode layer and the cathode layer. The electrolyte composition includes an electrolyte solvent and an electrolyte salt.

    Fabrication of films and coatings used to activate shear thickening, impact resistant electrolytes

    公开(公告)号:US11233271B2

    公开(公告)日:2022-01-25

    申请号:US16836297

    申请日:2020-03-31

    申请人: UT-BATTELLE, LLC

    摘要: A method of making a passively impact resistant composite electrolyte and separator layer includes providing a suspension composition including electrically non-conducting particles that enable shear thickening. The particles can have a polydispersity index of no greater than 0.1, an average particle size in a range of from 50 nm to 1 um, and an absolute zeta potential of greater than ±40 mV. A particle suspension solvent is provided for suspending the particles. The suspension composition is applied to a porous separator material. A portion of the particles and suspension solvent penetrate the pores and the remainder of the particles in the suspension composition are distributed across the surface of the separator material. The suspension solvent is evaporated from the separator material to provide a shear thickening particle loaded separator. A separator assembly and a passivated battery are also disclosed.

    FABRICATION OF FILMS AND COATINGS USED TO ACTIVATE SHEAR THICKENING, IMPACT RESISTANT ELECTROLYTES

    公开(公告)号:US20200287243A1

    公开(公告)日:2020-09-10

    申请号:US16836297

    申请日:2020-03-31

    申请人: UT-BATTELLE, LLC

    摘要: A method of making a passively impact resistant composite electrolyte and separator layer includes providing a suspension composition including electrically non-conducting particles that enable shear thickening. The particles can have a polydispersity index of no greater than 0.1, an average particle size in a range of from 50 nm to 1 um, and an absolute zeta potential of greater than ±40 mV. A particle suspension solvent is provided for suspending the particles. The suspension composition is applied to a porous separator material. A portion of the particles and suspension solvent penetrate the pores and the remainder of the particles in the suspension composition are distributed across the surface of the separator material. The suspension solvent is evaporated from the separator material to provide a shear thickening particle loaded separator. A separator assembly and a passivated battery are also disclosed.

    Stabilized shear thickening electrolyte

    公开(公告)号:US10347945B2

    公开(公告)日:2019-07-09

    申请号:US15835696

    申请日:2017-12-08

    申请人: UT-BATTELLE, LLC

    摘要: A passively impact resistant composite electrolyte composition includes an aprotic electrolyte solvent, from 0.5 to 6M of an electrolyte salt, and shear thickening particles having a polydispersity index of no greater than 0.1, an average particle size in a range of 50 nm to 1 um, and an absolute zeta potential of greater than ±40 mV. The shear thickening particles have thereon an electrochemical double layer. The composition further includes a stabilizing surfactant. The stabilizing surfactant includes a first portion for adsorbing to the particles, and a second portion that is absorbed in the solvent. The length of the surfactant from the first portion to the second portion is greater than twice the thickness of the electrochemical double layer. Batteries and electrochemical devices incorporating the electrolyte composition are disclosed. Methods of making the electrolyte composition and of operating a battery are also disclosed.

    Method and apparatus for in-situ drying investigation and optimization of slurry drying methodology
    7.
    发明授权
    Method and apparatus for in-situ drying investigation and optimization of slurry drying methodology 有权
    泥浆干燥方法的原位干燥研究和优化方法和装置

    公开(公告)号:US09337470B2

    公开(公告)日:2016-05-10

    申请号:US13656020

    申请日:2012-10-19

    申请人: UT-BATTELLE, LLC

    IPC分类号: B05D3/02 B05D3/06 H01M4/04

    摘要: A method of drying casted slurries that includes calculating drying conditions from an experimental model for a cast slurry and forming a cast film. An infrared heating probe is positioned on one side of the casted slurry and a thermal probe is positioned on an opposing side of the casted slurry. The infrared heating probe may control the temperature of the casted slurry during drying. The casted slurry may be observed with an optical microscope, while applying the drying conditions from the experimental model. Observing the casted slurry includes detecting the incidence of micro-structural changes in the casted slurry during drying to determine if the drying conditions from the experimental model are optimal.

    摘要翻译: 干燥铸造浆料的方法,包括从铸造浆料的实验模型计算干燥条件并形成流延膜。 红外加热探针位于铸浆的一侧,热探针位于铸浆的相对侧。 红外加热探头可以控制干燥过程中浇铸浆液的温度。 浇铸的浆料可以用光学显微镜观察,同时应用实验模型的干燥条件。 观察铸造浆料包括在干燥期间检测铸浆中的微观结构变化的发生率,以确定来自实验模型的干燥条件是否是最佳的。

    Microbially-mediated method for synthesis of metal chalcogenide nanoparticles

    公开(公告)号:US10337030B2

    公开(公告)日:2019-07-02

    申请号:US15643610

    申请日:2017-07-07

    IPC分类号: C12P3/00 B82Y40/00 C01B19/00

    摘要: A method for producing metal chalcogenide nanoparticles, the method comprising: (i) producing hydrogen chalcogenide-containing vapor from a microbial source, wherein said microbial source comprises: (a) chalcogen-reducing microbes capable of producing hydrogen chalcogenide vapor from a chalcogen-containing source; (b) a culture medium suitable for sustaining said chalcogen-reducing microbes; (c) at least one chalcogen-containing compound that can be converted to hydrogen chalcogenide vapor by said chalcogen-reducing microbes; and (d) at least one nutritive compound that provides donatable electrons to said chalcogen-reducing microbes during consumption of the nutritive compound by said chalcogen-reducing microbes; and (ii) directing said hydrogen chalcogenide-containing vapor into a metal-containing solution comprising a metal salt dissolved in a solvent to produce metal chalcogenide nanoparticles in said solution, wherein said chalcogen is sulfur or selenium, and said chalcogenide is sulfide or selenide, respectively. The invention is also directed to metal chalcogenide nanoparticle compositions produced as above and having distinctive properties.