“…Recently, various electrochemical energy storage systems, including the most widely used rechargeable lithium-ion batteries (LIBs), are rapidly entering their era of “flexibility” because of the increasing requirement of flexible/wearable electronics. − As for flexible LIBs, great efforts have been focused on the evolution of flexible electrodes using carbon nanomaterials (such as graphene, carbon nanofibers (CNFs), carbon nanotubes (CNTs), etc.) as a nonmetal current collector. ,,− ,− Unfortunately, the mass production and processability of these flexible electrode films using carbon nanomaterials as the nonmetal current collector are still challenging, constraining the rapid commercialization process of flexible LIBs in a way. , Undoubtedly, future flexible LIBs are required to satisfy the consumers’ ever-growing high-energy demand on power sources for flexible/wearable electronics. However, most of the previously reported flexible LIBs (full cell) have suffered from low energy density due to the limitation of the flexible anode based on lithium titanate oxide (Li 4 Ti 5 O 12 , with a low capacity of ∼175 mAh g –1 and a high-voltage plateau at ∼1.5 V vs Li + /Li) and the lack of flexible integrated anode based on conventional graphite materials (with a high capacity of ∼370 mAh g –1 and a low average operating voltage at ∼0.1 V vs Li + /Li). ,− It is noted here that the fabrication of the self-standing flexible integrated graphite anode using carbon nanomaterials as the nonmetal current collector (without a Cu foil current collector) is still full of challenges, possibly due to the microscale particle size. ,− …”