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

Armstrong, Beth L.; Veith, Gabriel M.; Kalnaus, Sergiy; Wang, Hsin; Browning, Katie L.; Cooley, Kevin M.

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

Patent · 24 January 2022

OSTI ID:1892570

Armstrong, Beth L.; Veith, Gabriel M.; Kalnaus, Sergiy; Wang, Hsin; Browning, Katie L.; Cooley, Kevin M.

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.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC05-00OR22725

Assignee:: UT-Battelle, LLC (Oak Ridge, TN)

Patent Number(s):: 11,233,271

Application Number:: 16/836,297

OSTI ID:: 1892570

Country of Publication:: United States

Language:: English

References (15)

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