Flexible　devices　have　shown　great　application　potential　in　portable　and　miniaturized　devices.　However,　work　on　flexible　electrodes　for　capacitive　deionization　(CDI)　has　not　been　well　developed　due　to　the　issues　of　desalination　property,　processability,　and　availability　under　actual　bending　conditions.　Herein,　we　constructed　a　kind　of　flexible　lamellar　MXene　membrane　by　assembling　Ti3C2Tx　sheets　with　both　crumpled　and　perforated　structures　and　studied　their　desalination　performance　in　conventional　planar　and　bent　configurations.　The　crumpled　and　perforated　features　in　Ti3C2Tx　(C-P-TC)　nanosheets　could　optimize　the　in-plane　and　out-of-plane　diffusion　channels　of　the　stacked　samples,　respectively,　effectively　improving　the　accessibility　of　membranes.　As　a　result,　the　desalination　performance　of　such　C-P-TC　electrodes　was　superior　to　that　of　those　assembled　from　crumpled　or　perforated　sheets　alone.　Significantly,　this　flexible　C-P-TC　electrode　still　showed　excellent　performance　at　real　bend　deformation,　which　possessed　not　only　almost　the　same　CDI　capacity　as　the　traditional　planar　configuration　but　also　good　cycling　stability.　This　work　not　merely　proposes　an　alternative　strategy　to　improve　the　CDI　performance　of　lamellar　MXene　electrodes　by　regulating　the　nanostructures　of　channels　but　also　confirms　their　effective　deionization　ability　under　real　bent　state,　greatly　facilitating　the　potential　use　of　flexible　electrodes　in　miniaturized　CDI　devices.　©　2024