Electrochemically recycling a lithium-ion battery
AssigneeHulico LLC
InventorsSteven E. Sloop, Lauren E. Crandon
Life of this patent
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Abstract
Examples are disclosed that relate to methods and reactors for recycling a positive electrode material of a lithium-ion battery. One example provides a method of recycling a positive electrode material of a lithium-ion battery. The positive electrode material comprises a metal m having a n+ oxidation state (mn+). A reaction mixture is formed comprising the positive electrode material, an oxidizing agent, and lithium ions. The positive electrode material is electrochemically replenished with lithium via electrochemical reduction of the lithium ions while maintaining the n+ oxidation state of the metal m in the positive electrode material via the oxidizing agent.
Claims17
A method of recycling a positive electrode material of a lithium-ion battery, the positive electrode material comprising a metal m having a n+ oxidation state (mn+), the method comprising:
- forming a reaction mixture comprising the positive electrode material, an oxidizing agent, and lithium ions;
- and
- electrochemically replenishing the positive electrode material with lithium via electrochemical reduction of the lithium ions while maintaining the n+ oxidation state of the metal m in the positive electrode material via the oxidizing agent.
A method of recycling a positive electrode material of a lithium-ion battery, the positive electrode material comprising a lithium nickel manganese cobalt oxide having nickel in a 3+ oxidation state, the method comprising:
- forming a reaction mixture comprising the positive electrode material, lithium ions, and an oxidizing agent;
- maintaining the 3+ oxidation state of the nickel in the positive electrode material via the oxidizing agent;
- and
- electrochemically replenishing the positive electrode material with lithium via electrochemical reduction of the lithium ions.
Dependencies are inferred from the claim text.