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US 2022/0013788 A1Published application
Rolled 3D Aluminum Secondary Batteries
OwnerAruna Zhamu, Bor Z. Janginventors
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OwnerAruna Zhamu, Bor Z. Janginventors
Estimating the term…
Provided is rolled aluminum secondary battery comprising an anode, a cathode, a porous or ion-permeable separator, and an electrolyte, wherein the anode contains aluminum metal or an aluminum metal alloy optionally supported by a current collector and the cathode contains a wound cathode roll of a cathode active material having a cathode roll length, a cathode roll width, and a cathode roll thickness, wherein the cathode active material contains isolated graphene sheets, expanded graphite flakes, and/or graphite flakes of exfoliated graphite worms that are aligned substantially parallel to a plane defined by the cathode roll length and the cathode roll width; and wherein the cathode roll width is substantially perpendicular to the separator in such a manner that the aligned graphene sheets or graphite flakes have a graphene edge plane in direct contact with the electrolyte and facing the separator.
A rolled aluminum secondary battery comprising an anode, a cathode, a porous or ion-permeable separator electronically separating said anode and said cathode, and an electrolyte in ionic contact with said anode and said cathode to support reversible deposition and dissolution of aluminum at said anode, wherein said anode comprises aluminum metal or an aluminum metal alloy as an anode active material and said cathode comprises a wound cathode roll of a cathode active material having a cathode roll length, a cathode roll width, and a cathode roll thickness or diameter, wherein said cathode active material comprises isolated graphene sheets, expanded graphite flakes, recompressed exfoliated graphite worms having constituent graphite flakes, or a combination thereof wherein these graphene sheets or graphite flakes are aligned or oriented substantially parallel to a plane defined by said cathode roll length and said cathode roll width;
A rolled aluminum secondary battery comprising an anode current collector, an anode, a cathode, a cathode current collector, an ion-permeable separator that electronically separates said anode and said cathode, and an electrolyte in ionic contact with said anode and said cathode, wherein the anode contains aluminum metal or an aluminum metal alloy as an anode active material and the cathode contains a wound roll of an electrolyte-impregnated laminar graphene or expanded graphite structure, which is composed of multiple graphene sheets or graphite flakes being alternately spaced by thin electrolyte layers, less than 10 nm in thickness, and said multiple graphene sheets or graphite flakes are substantially aligned along a desired direction substantially perpendicular to said separator, and wherein said laminar graphene structure has a physical density from 0.5 to 1.7 g/cm3 and a specific surface area from 50 to 3,300 m2/g, when measured in a dried state of said laminar graphene or expanded graphite structure with said electrolyte removed.
A method of manufacturing an aluminum secondary battery, comprising:
Dependencies are inferred from the claim text.