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US 11,641,045 B2Granted
Ion trapping agent, separator for lithium ion battery, and lithium ion secondary battery
AssigneeToagosei Co., Ltd.
InventorYasuharu Ono
Life of this patent
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Abstract
An ion trapping agent which is a layered phosphate compound that includes a proton as an ion exchange group, that supports lithium ions in excess of a theoretical exchange capacity of the layered phosphate compound, and that has no water of crystallization; and a separator for a lithium ion battery or a lithium ion secondary battery containing the ion trapping agent.
Claims11
An ion trapping agent which is a layered phosphate compound that comprises a proton as an ion exchange group, that supports lithium ions in excess of a theoretical exchange capacity of the layered phosphate compound, and that has no water of crystallization,
- wherein the layered phosphate compound is α-zirconium phosphate or α-titanium phosphate, and
- wherein the α-zirconium phosphate is a compound represented by the following formula (1):
- ZrO2.nP2O5.xLi2O (1)
- wherein, in Formula (1), n is a positive number of from 0.5 to 1.5, x is a positive number of from 0.8 to 2.2, and n is equal to or smaller than x;
- and
- wherein the α-titanium phosphate is a compound represented by the following Formula (2):
- TiO2.xP2O5.nLi2O (2)
- wherein, in Formula (2), n is a positive number of from 0.5 to 1.5, x is a positive number of from 0.8 to 2.2, and n is equal to or smaller than x.
5 more elements
Dependencies are inferred from the claim text.