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US 2024/0382945 A1Published application
Functionalized polybenzimidazole polymers for ionomer and proton exchange membrane applications
Assignee1s1 Energy, Inc.
InventorsSukanta Bhattacharyya, Daniel Sobek
Life of this patent
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Abstract
An ion exchange-functionalized polymer molecule includes a repeating unit having a benzimidazole unit as at least part of a main chain, a side chain, or both. The ion exchange-functionalized polymer molecule also includes an ion exchange group linked to the repeating unit. The ion exchange group may be a tetravalent boron group or a metal fluoride, and the metal fluoride may be a multivalent metal atom.
Claims20
An ion exchange-functionalized polymer molecule comprising:
- a repeating unit comprising a benzimidazole unit as at least part of a main chain, a side chain, or both;
- and
- an ion exchange group linked to the repeating unit, wherein the ion exchange group comprises a tetravalent boron group or a metal fluoride, the metal fluoride comprising a multivalent metal atom.
A method of making an ion exchange-functionalized polymer molecule, comprising:
- linking an ion exchange agent with a repeating unit of a polymer molecule, wherein:
- the polymer molecule comprises a benzimidazole unit as at least part of a main chain or a side chain of the polymer molecule;
- and
- the ion exchange agent comprises a trivalent boron compound or a metal fluoride, the metal fluoride comprising a multivalent metal atom.
1 more element
A polybenzimidazole (PBI) polymer comprising:
- a main chain comprising benzimidazole units;
- and
- ion exchange groups linked to the benzimidazole units;
- wherein the ion exchange groups comprise tetravalent boron groups or metal fluoride groups, each metal fluoride group comprising a multivalent metal atom, and
- wherein the ion exchange groups are linked to secondary amines of the benzimidazole units.
2 more elements
Dependencies are inferred from the claim text.