An electrochemical cell includes a solid state material that functions as an electrolyte and a separator within the electrode assembly. The solid state material is a mixture of a polymer that is interspersed with an ionically conductive ceramic material.

An electrochemical cell includes a solid state material that functions as an electrolyte and a separator within the electrode assembly. The solid state material is a mixture of a polymer that is interspersed with an ionically conductive ceramic material.

A hybrid solid electrolyte particulate (or multiple particulates) for use in a rechargeable lithium battery cell, wherein the particulate comprises one or more than one inorganic solid electrolyte particles encapsulated by a shell of polymer electrolyte wherein 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 polymer electrolyte individually have a lithium-ion conductivity no less than 10.sup.31 6 S/cm. 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.

A hybrid solid electrolyte particulate (or multiple particulates) for use in a rechargeable lithium battery cell, wherein the particulate comprises one or more than one inorganic solid electrolyte particles encapsulated by a shell of polymer electrolyte wherein 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 polymer electrolyte individually have a lithium-ion conductivity no less than 10.sup.31 6 S/cm. 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.

Set forth herein are pellets, thin films, and monoliths of lithium-stuffed garnet electrolytes having engineered surfaces. These engineered surfaces have a list of advantageous properties including, but not limited to, low surface area resistance, high Li.sup.+ ion conductivity, low tendency for lithium dendrites to form within or thereupon when the electrolytes are used in an electrochemical cell. Other advantages include voltage stability and long cycle life when used in electrochemical cells as a separator or a membrane between the positive and negative electrodes. Also set forth herein are methods of making these electrolytes including, but not limited to, methods of annealing these electrolytes under controlled atmosphere conditions. Set forth herein, additionally, are methods of using these electrolytes in electrochemical cells and devices. The instant disclosure further includes electrochemical cells which incorporate the lithium-stuffed garnet electrolytes set forth herein.

Set forth herein are pellets, thin films, and monoliths of lithium-stuffed garnet electrolytes having engineered surfaces. These engineered surfaces have a list of advantageous properties including, but not limited to, low surface area resistance, high Li.sup.+ ion conductivity, low tendency for lithium dendrites to form within or thereupon when the electrolytes are used in an electrochemical cell. Other advantages include voltage stability and long cycle life when used in electrochemical cells as a separator or a membrane between the positive and negative electrodes. Also set forth herein are methods of making these electrolytes including, but not limited to, methods of annealing these electrolytes under controlled atmosphere conditions. Set forth herein, additionally, are methods of using these electrolytes in electrochemical cells and devices. The instant disclosure further includes electrochemical cells which incorporate the lithium-stuffed garnet electrolytes set forth herein.

In an embodiment, the present disclosure pertains to a non-aqueous electrolyte. In some embodiments, the non-aqueous electrolyte includes a polymeric component and a ceramic component. The polymeric component includes a polyester-based polymer and a polyether-based polymer. The ceramic component includes inorganic materials. In an additional embodiment, the present disclosure pertains to an energy storage device including an anode, a cathode, and a non-aqueous electrolyte of the present disclosure. In a further embodiment, the present disclosure pertains to a method of making a non-aqueous electrolyte by mixing a polymeric component and a ceramic component of the present disclosure.

In an embodiment, the present disclosure pertains to a non-aqueous electrolyte. In some embodiments, the non-aqueous electrolyte includes a polymeric component and a ceramic component. The polymeric component includes a polyester-based polymer and a polyether-based polymer. The ceramic component includes inorganic materials. In an additional embodiment, the present disclosure pertains to an energy storage device including an anode, a cathode, and a non-aqueous electrolyte of the present disclosure. In a further embodiment, the present disclosure pertains to a method of making a non-aqueous electrolyte by mixing a polymeric component and a ceramic component of the present disclosure.

A power storage device includes an electrode assembly including a positive-electrode plate and a negative-electrode plate stacked with a separator interposed between the positive-electrode plate and the negative-electrode plate, an exterior can accommodating the electrode assembly and an electrolyte solution, and including a side wall portion having a tubular shape and an opening provided at least at one end of the side wall portion, and a sealing plate that closes the opening of the exterior can. The sealing plate is joined to the opening at a joint. Each of a pair of long walls of the side wall portion facing each other in a depth direction includes a thin part extending in a width direction.

A power storage device includes an electrode assembly including a positive-electrode plate and a negative-electrode plate stacked with a separator interposed between the positive-electrode plate and the negative-electrode plate, an exterior can accommodating the electrode assembly and an electrolyte solution, and including a side wall portion having a tubular shape and an opening provided at least at one end of the side wall portion, and a sealing plate that closes the opening of the exterior can. The sealing plate is joined to the opening at a joint. Each of a pair of long walls of the side wall portion facing each other in a depth direction includes a thin part extending in a width direction.