In　order　to　develop　anion　exchange　membranes　(AEMs)　with　simutaneously　good　anion　conductivity,　low　vanadium　ion　permeability,　excellent　mechanical　property,　and　high　chemical　stability,　a　fluorinated　poly-(arylene　ether)　(FPAE)　containing　tertiary　amine　groups　was　condensation　polymerized　and　then　cross-linked　with　decabromopropyl　pillar[5]arene　(P5Br)　via　the　nucleophilic　substitution　reaction.　After　that,　iodomethane　was　introduced　to　convert　the　remaining　tertiary　amine　groups　into　quatemary　ammonium　groups.　A　series　of　densely　cross-linked　FPAE　AEMs,　namely　QAFPAE-P5Br-x,　were　prepared　with　high　gel　contents　in　polar　aprotic　solvents.　As　the　loading　amount　of　P5Br　is　increased　from　0.5%　to　5%,　the　water　uptake,　swelling　ratio,　anion　conductivity　and　VO2+　permeability　of　the　membranes　are　decreased,　but　the　ion　selectivity,　tensile　strength,　arca　resistance　and　oxidative　stability　of　the　membranes　are　increased.　The　QAFPAE-P5Br-1%　with　only　1%　of　P5Br　loaded　has　both　low　area　resistance　and　low　VO2+　permeability,　which　are　promising　for　VRFB　applications.　At　a　current　density　of　80　mA.cm(-2),　the　VRFB　assembled　with　QAFPAE-P5Br-1%　shows　an　energy　efficiency　of　86.5%,　which　is　7.7%　higher　than　that　of　the　VRFB　assembled　with　Nafion　212.　Besides,　the　VRFB　assembled　with　QAFPAE-P5Br-1%　has　excellent　cycling　stability,　high　discharge　capacity　retention　and　good　anti-self-discharge　performance.　Therefore,　the　dense　cross-linking　is　an　effective　protocol　to　enhance　the　overall　performance　of　AEMs.　[GRAPHICS]　.