All solid-state lithium-ion battery incorporating electrolyte-infiltrated composite electrodes

A ceramic-polymer composite electrode that comprises:

• (i) a polymer matrix, (ii) ceramic nanoparticles that are distributed in the polymer matrix wherein the nanoparticles comprise AlxLi7-xLa3Zr2-y-zTayNbzO12 wherein x ranges from 0.1 to 0.85, y ranges from 0 to 0.50, and z ranges from 0 to 0.75, (iii) an anode active material which comprises silicon that is distributed in the polymer matrix, (iv) a conducting agent that is distributed in the polymer matrix, (v) a plasticizer and (vi) a lithium salt wherein the electrode comprises 60 to 96 wt % anode active material, 1 to 15 wt % conducting agent, 0.1 to 10 wt % lithium salt, 0.1 to 5 wt % ceramic nanoparticles, 0.1 to 10 wt % plasticizer, 0.1 to 5 wt % polymer matrix and 0 to 15 wt %, additional binder and wherein the ceramic nanoparticles have diameters that range from 10 to 2000 nm and wherein the electrode is in the form of a film that has an ionic conductivity that is higher than 0.1×10−3 S/cm when measured at a temperature between −30° C. to 10° C. and that is higher than 1×10−3 S/cm when measured at a temperature of 20° C. or higher.

A ceramic-polymer composite electrode that comprises:

• (i) a polymer matrix, (ii) ceramic nanoparticles that are distributed in the polymer matrix wherein the nanoparticles comprise AlxLi7-xLa3Zr2-y-zTayO12 wherein x ranges from 0.1 to 0.85, y ranges from 0 to 0.50, and z ranges from 0 to 0.75, (iii) a cathode active material that consists essentially of lithium based cathode material particles that are distributed in the polymer matrix, (iv) a conducting agent that is distributed in the polymer matrix, (v) a plasticizer and (vi) a lithium salt wherein the electrode comprises 60 to 96 wt % cathode active material, 1 to 15 wt % conducting agent, 0.1 to 10 wt % lithium salt, 0.1 to 5 wt % ceramic nanoparticles, 0.1 to 10 wt % plasticizer, 0.1 to 5 wt % polymer matrix and 0 to 15 wt %, additional binder and wherein the ceramic nanoparticles have diameters that range from 10 to 2000 nm and wherein the electrode is in the form of a film that has an ionic conductivity that is higher than 0.1×10−3 S/cm when measured at a temperature between −30° C. to 10° C. and that is higher than 1×10−3 S/cm when measured at a temperature of 20° C. or higher.