Hyper-branched polymer, electrode including the polymer, electrolyte membrane including the polymer, and fuel cell including the electrode and/or the electrolyte membrane
AssigneesSamsung Electronics Co., Ltd., Snu R&Db Foundation
InventorsSeong-woo CHOI, Cheol-hee Ahn, Jung-ock Park, Mi-jung Yim
Life of this patent
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Abstract
A hyper-branched polymer that has a dendritic unit, a linear unit, a terminal unit, and a degree of branching of about 0.05 to about 1. The hyper-branched polymer can be included in an electrode and/or an electrolyte membrane of a fuel cell.
Claims24
An electrode, comprising a catalyst layer comprising a hyper-branched polymer having:
- a dendritic unit represented by Formula 1;
- a linear unit represented by Formula 2;
- a terminal unit represented by Formula 3;
- and
- a degree of branching of from about 0.05 to about 1,
- wherein R is selected from the group consisting of fluorine, a C1-C20 fluorinated alkyl group, a C6-C20 fluorinated aryl group, a C2-C20 fluorinated heteroaryl group, a C6-C20 cycloalkyl group, and a C2-C20 heterocycle group.
An electrode comprising a catalyst layer comprising a cross-linked product of a hyper-branched polymer, a benzoxazine-based monomer, and a cross-linkable compound, the hyper-branched polymer having:
- a dendritic unit represented by Formula 1;
- a linear unit represented by Formula 2;
- a terminal unit represented by Formula 3;
- and
- a degree of branching of about 0.05 to about 1,
- wherein R is selected from the group consisting of fluorine, a C1-C20 fluorinated alkyl group, a C6-C20 fluorinated aryl group, a C2-C20 fluorinated heteroaryl group, a C6-C20 cycloalkyl group, and a C2-C20 heterocycle group.
An electrolyte membrane for fuel cells, comprising:
- a hyper-branched polymer that has a dendritic unit represented by Formula 1, a linear unit represented by Formula 2, and a terminal unit represented by Formula 3 and that has a degree of branching of about 0.05 to about 1;
- or
- a cross-linked product of the hyper-branched polymer, a benzoxazine-based monomer, and a cross-linkable compound,
- wherein R is selected from the group consisting of fluorine, a C1-C20 fluorinated alkyl group, a C6-C20 fluorinated aryl group, a C2-C20 fluorinated heteroaryl group, a C6-C20 cycloalkyl group, and a C2-C20 heterocycle group.
A fuel cell comprising:
- a cathode;
- an anode;
- and
- a polymer electrolyte membrane interposed between the cathode and the anode,
- wherein at least one of the cathode, the anode, and the electrolyte membrane comprises,
- a hyper-branched polymer that has a dendritic unit represented by Formula 1, a linear unit represented by Formula 2, a terminal unit represented by Formula 3, and a degree of branching of about 0.05 to about 1, or
- a cross-linked product of the hyper-branched polymer, a benzoxazine-based monomer, and a cross-linkable compound,
- wherein R is selected from the group consisting of fluorine, a C1-C20 fluorinated alkyl group, a C6-C20 fluorinated aryl group, a C2-C20 fluorinated heteroaryl group, a C6-C20 cycloalkyl group, or a C2-C20 heterocycle group.
Dependencies are inferred from the claim text.