MULTILAYER ELECTROLYTE, SOLID-STATE BATTERY INCLUDING THE SAME, AND METHOD(S) OF MAKING THE SAME
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United States of America Patent
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Issued Date -
Apr 18, 2024
app pub date -
May 9, 2023
filing date -
May 17, 2022
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Abstract
A solid-state battery cell, a solid-state battery, and methods of making the same are disclosed. The solid-state battery cell includes a cathode current collector, a cathode on the cathode current collector, a low-impedance interface film on the cathode, a solid-state electrolyte on or over the low-impedance interface film, a lithiophilic layer on or over the solid-state electrolyte, and an anode current collector on or over the lithiophilic layer. The low-impedance interface film may include an oxide, a nitride or an oxynitride of lithium and a metal selected from aluminum, silicon and titanium, carbon, a metal oxide, fluoride, oxyfluoride or phosphate, or an alkali metal borate, and may have a thickness of 5-100 Å, for example. The lithiophilic layer may be or include a metal oxide, silicate, aluminate or fluoride, or an elemental metal or metalloid, and may have a thickness of 5 Å to 1 μm, for example.
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