Lithium ion rechargeable battery
First Claim
1. A rechargeable battery comprising:
- an anode;
a cathode; and
a separator comprising an electrolyte to prevent physical contact between the anode and the cathode while also providing a medium for transporting ions;
wherein the anode comprises;
a microporous scaffold structure comprising a silicon crystal covered in a polycrystalline silicon layer; and
a protective layer deposited over the microporous scaffold structure to prevent a lithium ion from penetrating into the microporous scaffold structure, wherein the thin polycrystalline silicon layer is deposited over the protective layer.
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Accused Products
Abstract
Embodiments of the disclosed lithium ion rechargeable battery include an anode, a cathode, and a separator including an electrolyte to prevent physical contact between the anode and the cathode, while also providing medium for transporting the lithium ions. In some embodiments, the anode may include a microporous scaffold structure that includes a silicon crystal covered in a thin polycrystalline silicon cover. Additionally, the various embodiments described herein further describe increasing the surface area of the microporous scaffold structure so as to provide a more efficient charge flow between the anode and the cathode. In some embodiment, the two or more microporous scaffold structures are stacked on top of one another so that there is an increase in contact area and reduced contact resistance, thus further increasing the charge capacity of the disclosed lithium ion rechargeable battery.
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Citations
18 Claims
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1. A rechargeable battery comprising:
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an anode; a cathode; and a separator comprising an electrolyte to prevent physical contact between the anode and the cathode while also providing a medium for transporting ions; wherein the anode comprises; a microporous scaffold structure comprising a silicon crystal covered in a polycrystalline silicon layer; and a protective layer deposited over the microporous scaffold structure to prevent a lithium ion from penetrating into the microporous scaffold structure, wherein the thin polycrystalline silicon layer is deposited over the protective layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for producing a rechargeable battery comprising:
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providing a battery comprising; an anode comprising a microporous scaffold structure made of silicon crystal with a polycrystalline silicon layer; a cathode; a permeable barrier comprising an electrolyte in between the anode and the cathode; forming hollow periodic channels in the microporous scaffold structure of the anode; and depositing the microporous scaffold structure of the anode with a protective layer comprising platinum, gold, or titanium nitride to prevent a lithium ion from penetrating into the microporous scaffold structure. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification