▎ 摘　　要

NOVELTY - Engineered particle 100 comprises an active material particle 120 comprising an outer surface, and a conductive coating 160 disposed on the outer surface of the active material particle, where the conductive coating comprises M_xAl_ySi_zO_w film, where M is an alkali selected from Na and Li, and x is 1-4, y is 0-1, z is 1-2, and w is 3-6. USE - Engineered particle for secondary battery and energy storage device including battery and a capacitor (all claimed). ADVANTAGE - The engineered particle provides improved batteries with characteristics such as improved storage capacity, and improved lithium or sodium ion conductivity and reduced interface resistance such that cell performance and cell capacity can be improved in a commercially viable manner. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) secondary battery, which comprises a cathode, an anode, and an electrolyte, where the cathode and the anode comprises the engineered particle; (2) a method for fabricating a cathode for an alkali-ion battery, which involves forming coated particles by forming particles of an alkali-intercalating material, mixing particles of the alkali-intercalating material with an aqueous solution comprising an aluminum salt and an alkali metal salt to form slurry, adding a water-soluble alkali silicate into the first slurry, adding electrically-conductive carbon nanoparticles into the slurry, sonicating slurry to produce a gel, drying the slurry to form individual dry green coated gel particles, and heat treating the green coated gel particles to produce coated particles, blending the coated particles with conductive particles, an organic binder, and non-aqueous solvent to form a second slurry, applying a coating of the slurry to a metal substrate with the substrate heated at 80-200?oC in air, calendaring the coated substrate at 10 tons, and then curing the coated substrate in nitrogen at 250-400?oC; (3) an alkali-ion energy storage device, which comprises a cathode, an anode, a separator, and an aqueous electrolyte, where the cathode and the anode comprises the engineered particle; (4) a method for making a stabilized lithium anode for high energy density lithium batteries, which involves forming coated particles by forming particles of a lithium-intercalating material, mixing the particles of the lithium-intercalating material with an aqueous solution comprising an aluminum salt and a lithium metal salt to form slurry, adding a water-soluble lithium silicate into the slurry, adding electrically-conductive carbon nanoparticles into the slurry, sonicating the slurry to produce a gel, drying the slurry to form individual dry green coated gel particles, and heat treating the green coated gel particles to produce coated particles, providing a metal current collector, coating the metal current collector with lithium metal, spray coating the lithium-coated metal current collector with another slurry containing the coated particles, a non-aqueous solvent, and conductive particles, and then curing the spray-coated metal current collector at 100-300?oC. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of an engineered particle. Engineered particle (100) Active material particle (120) Electrically conductive carbon nano-particles (140) Alkali ion conducting coating (160)