Sulfonimide containing compounds and their use in polymer electrolyte membranes for electrochemical cells

    公开(公告)号:US20060178411A1

    公开(公告)日:2006-08-10

    申请号:US10560883

    申请日:2004-06-25

    申请人: Mark Teasley

    发明人: Mark Teasley

    摘要: A compound having the general structure (I), wherein A1? is a monovalent, divalent, or trivalent aromatic heterocyclic group comprising heterocyclic rings; R1?, R2?, and R3? are divalent fluorinated groups; m, n, and p are 0 to 3, with the proviso that m+n+p is equal to 1, 2, or 3 so that the carbon atoms of the heterocyclic rings are fully substituted by acidic fluorinated sulfonyl-containing groups; q is 0 or 1; Y1? is —OH, —NH—SO?2#191-R4? wherein R4? is a monovalent fluorinated group, —NH—, —NH—SO?2#191-R5?-SO?2#191-NH—, or —NH—SO?2#191-R6?-A2?-R7?-SO?2#191-NH—, wherein A2? is a divalent heterocyclic group and R5?, R6?, and R7? are divalent fluorinated groups; and Y2? and Y3? are —OH or —NH—SO?2#191-R4?; with the proviso that when m and n are each equal to 1, p is 0 to 1, and q is 0, Y1? is selected from the group consisting of —NH—, —NH—SO?2#191-R5?-SO?2#191-NH—, and —NH—SO?2#191-R6?-A2?-R7?-SO?2#191-NH—. By compound is meant either a small molecule or a repeat unit of a polymer. The invention also provides a solid polymer electrolyte membrane, a membrane electrode assembly, a gas diffusion electrode, an electrocatalyst coating composition, and a fuel cell.