US 2025/0007004 A1 · METHODS OF MAKING SOLID-STATE LITHIUM-ION BATTERIES WITH LONG CYCLE LIFE AND ULTRAFAST CHARGING

Abstract

A solid-state lithium-ion battery with long cycle life and ultrafast charging is disclosed. The exceptional cycle life is enabled by an ultra-stable lithium vanadium oxide-based anode material, disordered rock salt Li3V2O5. This anode material has a working potential of ˜0.6 V versus Li/Li+, a 3D Li-ion transport pathway, and linear expansion less than 2%. These properties enable rapid lithium transport, eliminate lithium metal plating, and deliver extremely long cycle life. Furthermore, the use of a solid electrolyte such as Li5.4PS4.4 Cl1.6 provides high-rate capability and a wide operating temperature due to the absence of phase changes or concentration polarization in the electrode. The solid-state lithium-ion battery may be configured to provide over 5,000 cycles to 80% capacity, a 3-minute ultrafast charge time to 80% state of charge, an energy density exceeding 200 W·h/kg and 650 W·h/L, and a wide operating temperature range from −80° C. to 350° C.

Claims20

Dependent claims

A method of manufacturing a cell, said method comprising:

(a) casting an anode material, an anode carbon additive, and a solid electrolyte onto a first substrate to form an anode, wherein said anode material comprises a plurality of anode-material particles, wherein said anode-material particles comprise an internal phase containing LiaVbOc,
wherein a=0.001−10, b=1-3, c=1-9, and a, b, and c are selected to charge-balance said LiaVbOc;
(b) casting a cathode material, a cathode carbon additive, and said solid electrolyte onto a second substrate, to form a cathode;
(c) stacking a solid electrolyte layer onto said anode, wherein said solid electrolyte layer comprises said solid electrolyte;
(d) stacking said cathode onto said solid electrolyte layer;
and
(e) surrounding multiple layers of said anode, multiple layers of said solid electrolyte layer, and multiple layers of said cathode with a packet foil, to form a cell,
wherein said LiaVbOc is capable of being reversibly lithiated, and wherein at least some of said LiaVbOc has a disordered rocksalt structure in the Fm3m space group.

5 more elements

A method of manufacturing a cell, said method comprising:

(a) casting an anode material, an anode carbon additive, a solid electrolyte, and a Li metal onto a first substrate to form an anode, wherein said anode material comprises a plurality of anode-material particles, wherein said anode-material particles comprise an internal phase containing LixVyOz, wherein x=0−10, y=1-3, z=1-9, and x, y, and z are selected to charge-balance said LixVyOz;
(b) casting a cathode material, a cathode carbon additive, and said solid electrolyte onto a second substrate, to form a cathode;
(c) stacking a solid electrolyte layer onto said anode, wherein said solid electrolyte layer comprises said solid electrolyte;
(d) stacking said cathode onto said solid electrolyte layer;
(e) surrounding multiple layers of said anode, multiple layers of said solid electrolyte layer, and multiple layers of said cathode with a packet foil, to form a cell;
and
(f) converting said anode into a lithiated anode comprising LiaVbOc, wherein a=0.001-10, b=1-3, c=1-9, and a, b, and c are selected to charge-balance said LiaVbOc, wherein said LiaVbOc is capable of being reversibly lithiated, and wherein at least some of said LiaVbOc has a disordered rocksalt structure in the Fm3m space group.

4 more elements

Dependencies are inferred from the claim text.

Methods of making solid-state lithium-ion batteries with long cycle life and ultrafast charging

Life of this patent

Methods of making solid-state lithium-ion batteries with long cycle life and ultrafast charging

Life of this patent

Abstract

Claims20