A hybrid solid electrolyte particulate for use in a rechargeable lithium battery cell, wherein said particulate comprises one or more than one inorganic solid electrolyte particles encapsulated by a shell of elastic polymer electrolyte wherein (i) the hybrid solid electrolyte particulate has a lithium-ion conductivity from 10.sup.−6 S/cm to 5×10.sup.−2 S/cm and both the inorganic solid electrolyte and the elastic polymer electrolyte individually have a lithium-ion conductivity no less than 10.sup.−6 S/cm; (ii) the elastic polymer electrolyte-to-inorganic solid electrolyte ratio is from 1/100 to 100/1 or the elastic polymer electrolyte shell has a thickness from 1 nm to 10 μm; and (iii) the elastic polymer electrolyte has a recoverable elastic tensile strain from 5% to 1,000%. Also provided is a lithium-ion or lithium metal cell containing multiple hybrid solid electrolyte particulates in the anode, cathode and/or the separator. Processes for producing hybrid solid electrolyte particulates are also disclosed.

The present disclosure describes a lithium solid state battery, including a cathode that includes an active material such as lithium, and an additive having a lower melting point than the active material. The additive can provide a composite cathode where a cathode-electrolyte interphase has high electronic and ionic conductivity, good mechanical deformability, and high oxidation potential.

The present disclosure describes a lithium solid state battery, including a cathode that includes an active material such as lithium, and an additive having a lower melting point than the active material. The additive can provide a composite cathode where a cathode-electrolyte interphase has high electronic and ionic conductivity, good mechanical deformability, and high oxidation potential.

This separator for nonaqueous electrolyte secondary batteries contains a polymer compound and a solid electrolyte, and has a pore volume of 0.06 cm.sup.3/gor less.

This separator for nonaqueous electrolyte secondary batteries contains a polymer compound and a solid electrolyte, and has a pore volume of 0.06 cm.sup.3/gor less.

This application relates to secondary lithium-sulfur batteries with electrolyte comprising a metal di-cation.

It is an object of the present invention to provide a solid-state battery having high energy density and excellent cycle property. The solid-state battery comprises a positive electrode, a solid electrolyte, and a negative electrode that is free of a negative-electrode active material. The solid electrolyte has a solid polymer electrolyte layer, and a functional layer that has a surface facing at least the negative electrode and that suppresses the formation of dendrites on the surface of the negative electrode.

It is an object of the present invention to provide a solid-state battery having high energy density and excellent cycle property. The solid-state battery comprises a positive electrode, a solid electrolyte, and a negative electrode that is free of a negative-electrode active material. The solid electrolyte has a solid polymer electrolyte layer, and a functional layer that has a surface facing at least the negative electrode and that suppresses the formation of dendrites on the surface of the negative electrode.

A polymer solid electrolyte having high ion conductivity, heat resistance and dimensional stability, and having excellent oxidation stability and voltage stability, and a lithium secondary battery including the same.

A polymer solid electrolyte having high ion conductivity, heat resistance and dimensional stability, and having excellent oxidation stability and voltage stability, and a lithium secondary battery including the same.