Back to results
US 11,364,693 B2Granted
Method for forming a high-energy density nanocomposite film
AssigneePowdermet, Inc.
InventorsAndrew Sherman, Haixong Tang, Brian Doud
Life of this patent
Estimating the term…
Abstract
A composite film having a high dielectric permittivity engineered particles dispersed in a high breakdown strength polymer material to achieve high energy density.
Claims53
A method for forming a composite film comprising:
- a. forming a plurality of particles of high dielectric permittivity ceramic filler, said high dielectric permittivity ceramic filler having a core-shell structure, a core of said core-shell structure having a different composition than a shell of said core-shell structure, said core includes ceramic material that includes two or more materials selected from the group consisting of barium, calcium, copper, lead, magnesium, strontium, niobium, titanium, and zirconium, said shell formed of one or more materials selected from the group consisting of Al2O3, SiO2, Si3N4, MgO, aluminosilicate, mica, and carbon, at least one portion of said high dielectric permittivity ceramic filler being formed of cores wherein said ceramic material has been doped to include one or more elements selected from the group consisting of neodymium, calcium, manganese, and yttrium;
- b. dispersing a plurality of said particles of said high dielectric permittivity ceramic filler into a polymer material;
- and,
- c. forming said polymer material having said plurality of said coated particles of said high dielectric permittivity ceramic filler into a film to form said composite film.
1 more element
A method for forming a composite film for use in a capacitor comprising:
- a. providing a plurality of particles of high dielectric permittivity ceramic filler, said high dielectric permittivity ceramic filler having a core-shell structure, a core of said core-shell structure having a different composition than a shell of said core-shell structure, said shell heated after being calcined on said core, said core includes ceramic material that includes two or more materials selected from the group consisting of barium, calcium, copper, lead, magnesium, strontium, titanium, and zirconium, and one or more materials selected from the group consisting of neodymium, calcium, manganese, and yttrium, said shell formed of one or more materials selected from the group consisting of Al2O3, SiO2, Si3N4, MgO, aluminosilicate, mica, and carbon, said shell forming a calcined shell about said core, wherein different particles of high dielectric permittivity ceramic filler have cores that have been sintered at different temperatures to create different structures and particle sizes;
- b. dispersing a plurality of said particles of said high dielectric permittivity ceramic filler into a polymer material;
- and,
- c. forming said polymer material having said plurality of said coated particles of said high dielectric permittivity ceramic filler into a film to form said composite film.
1 more element
A method for forming a composite film for use in a capacitor comprising:
- a. providing a plurality of particles of high dielectric permittivity ceramic filler, said high dielectric permittivity ceramic filler having a core-shell structure, a core of said core-shell structure having a different composition than a shell of said core-shell structure, said shell heated after being calcined on said core, said core includes ceramic material that includes two or more materials selected from the group consisting of barium, calcium, copper, lead, magnesium, strontium, titanium, and zirconium, said shell formed of one or more materials selected from the group consisting of Al2O3, SiO2, Si3N4, MgO, aluminosilicate, mica, and carbon, said shell forming a calcined shell about said core, wherein at least one portion of said high dielectric permittivity ceramic filler being formed of cores by one or more processes selected from the group consisting of 1) cores that have been sintered at a first temperature and another portion of said high dielectric permittivity ceramic filler being formed of cores that have been sintered at a second temperature, and wherein said first and second temperatures are different temperatures, 2) cores having a first particle size and another portion of said high dielectric permittivity ceramic filler being formed of cores having a second particle size, and wherein the first and second particle sizes are different, and 3) cores wherein said ceramic material has been doped to include one or more elements selected from the group consisting of neodymium, calcium, manganese, and yttrium;
- b. dispersing a plurality of said particles of said high dielectric permittivity ceramic filler into a polymer material;
- and,
- c. forming said polymer material having said plurality of said coated particles of said high dielectric permittivity ceramic filler into a film to form said composite film.
1 more element
Dependencies are inferred from the claim text.