Thin Film Electrolyte for Thin Film Batteries
First Claim
Patent Images
1. A solid-state, inorganic, electrolyte comprising:
- a chemical composition comprising lithium, oxygen, nitrogen, and at least one element selected from the group of;
aluminum, silicon, phosphorus, sulfur, scandium, yttrium, lanthanum, zirconium, magnesium, calcium;
wherein said electrolyte has a crystallinity of about 0-100 Å
; and
wherein said electrolyte has a lithium ion conductivity of greater than 5*10−
6 S/cm at 25°
C.
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Abstract
The invention relates to a solid-state lithium-ion thin-film electrolyte that, compared to the current state-of-the-art thin-film electrolyte, Lipon, exhibits an equal or larger electrochemical stability window (0-5.5 V vs. Li+/Li), an equal or smaller electronic conductivity (10−14 S/cm at 25° C.), the same ideal transference number for Li+ ions (t=1.000), and a 10× higher Li+ ion conductivity at −40° C. Latter provides thin-film batteries (TFBs) with at least a 5× higher power performance at −40° C. over the current state-of-the-art Lipon TFBs.
164 Citations
25 Claims
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1. A solid-state, inorganic, electrolyte comprising:
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a chemical composition comprising lithium, oxygen, nitrogen, and at least one element selected from the group of;
aluminum, silicon, phosphorus, sulfur, scandium, yttrium, lanthanum, zirconium, magnesium, calcium;wherein said electrolyte has a crystallinity of about 0-100 Å
; andwherein said electrolyte has a lithium ion conductivity of greater than 5*10−
6 S/cm at 25°
C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of fabricating a solid-state, inorganic electrolyte comprising providing a vacuum chamber;
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providing at least one deposition substrate in said chamber; providing at least one deposition target in said chamber, said at least one deposition target comprising at least one target material; providing a deposition gas atmosphere in said vacuum chamber; evaporating said at least one target material into said deposition gas atmosphere; forming a deposition material within said deposition gas atmosphere; and depositing said deposition material onto said at least one deposition substrate; whereby said electrolyte has a crystallinity of about 0-100 Å
,whereby said deposited material has a lithium ion conductivity of greater than 5*10−
6 S/cm at 25°
C., andwhereby said deposition material has a chemical composition comprising at least the elements lithium, oxygen, nitrogen, and at least one element selected from the group of aluminum, silicon, phosphorus, sulfur, scandium, yttrium, lanthanum, zirconium, magnesium, and calcium. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification