Patent ID: 11936066
Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  C  Y | IPC C  H

Claim 10:
11. A method of preparing lithium ion-exchanged zeolite particles, the method comprising:
(a) combining precursor zeolite particles with (NH4)3PO4 to form a first mixture comprising intermediate zeolite particles, wherein the precursor zeolite particles comprise a cation selected from the group consisting of H+, NH4+, Na+, K+, Mg2+, Ca+, and a combination thereof; and
(b) performing one of the following:
(i) adding a lithium salt to the first mixture to form the lithium ion-exchanged zeolite particles, or
(ii) separating the intermediate zeolite particle from the first mixture and combining the intermediate zeolite particles with the lithium salt to form the lithium ion-exchanged zeolite particles; and

wherein the lithium ion-exchanged zeolite particles comprise; cages defined by 8-membered rings, 9-membered rings, 10-membered rings, 12-membered rings or a combination thereof, wherein Li3PO4 is present within the cages; and Li+ and NH4+ cations; and wherein the lithium ion-exchanged zeolite particle comprises (i) less than or equal to about 0.1 at % of one or more of Na+, K+, Mg4+, or Ca+; and (ii) NH4+ in an amount greater than an amount of the one or more of Na+, K+, Mg4+, or Ca+.