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US 11,145,909 B2Granted
Lithium metal electrodes and batteries thereof
AssigneesMassachusetts Institute of Technology, Carnegie Mellon University, 24M Technologies, Inc.
InventorsYet-Ming Chiang, Venkatasubramanian Viswanathan, Linsen Li, Vikram Pande, Dilip Krishnamurthy, Zeeshan Ahmad, William Henry Woodford
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Abstract
The present disclosure is generally related to separators for use in lithium metal batteries, and associated systems and products. Certain embodiments are related to separators that form or are repaired when an electrode is held at a voltage. In some embodiments, an electrochemical cell may comprise an electrolyte that comprises a precursor for the separator.
Claims19
A rechargeable electrochemical cell, comprising:
- a first electrode;
- a second electrode;
- a separator;
- and
- an electrolyte, wherein the electrolyte comprises a salt with a concentration of greater than or equal to 0.01 M, the electrolyte having a portion of a precursor to form the separator, and wherein the portion of the precursor to form the separator has a solubility in the electrolyte of less than or equal to 1 mM and greater than or equal to 1 nM, wherein the precursor reacts to repair one or more defects in the separator when the first and the second electrodes reach a specific voltage between 0 V and 5 V, and the one or more defects are healed by the formation of a material in the one or more defects having a substantially similar composition to the separator, and wherein the one or more defects spontaneously passivate to prevent preferential deposition of new Li metal leading to dendrite formation.
2 more elements
Dependencies are inferred from the claim text.