Combination　of　high-capacity　and　flexibility　in　electrode　materials　is　crucial　for　flexible　electronics.　Recently,　red　phosphorus　(P)　has　caused　increasing　focus　as　a　hopeful　storage　material　for　lithium　storage　due　to　its　super-high　theoretical　capacity　and　low　cost.　However,　the　low　conductivity　of　red　P　and　its　large　volume　change　during　cycling　process　lead　to　reduced　electrochemical　activity.　So　far,　no　effective　methods　have　been　developed　to　construct　flexible　binder-free　electrodes　using　red　P　as　an　active　material　for　high-performance　lithium-ion　batteries　(LIBs).　Here,　a　novel　hollow　three-dimensional　(3D)　internet　structure　as　a　flexible　high-areal-capacity　electrode　material　was　fabricated　by　confining　red　P　nanoparticles　into　compact　MOF-derived　carbon-based　composite　polyhedrons/carbon　nanotube　internets.　The　electrode　manifests　an　excellent　lithium　storage　performance　for　LIBs　with　a　high　discharge　capacity　of　4.78　mAh　cm(-2)　(1920　mAh　g(-1))　at　0.1　mA　cm(-2)　and　a　good　capacity　retention　of　79.2%　at　1　mA　cm(-2)　after　300　cycles　(73%　and　69%　capacity　retention　at　5　and　10　mA　cm(-2)　after　500　cycles,　respectively).　The　novel　flexible　anode　materials　can　provide　excellent　Li+　storage　performance　for　flexible　electronics　applications.