LAUSR

Abstract CaV6O16·3H2O three-dimensional (3D) tubular structure has been constructed by a simple hydrothermal method without using any surfactants or additives. The tubular structure is composed of ultralong CaV6O16·3H2O nanobelts with good tailorability. By simply cutting and drying the 3D tubular structure, a CaV6O16·3H2O paper has been successfully prepared. Electrochemical performance of the CaV6O16·3H2O paper as the self-standing cathode for lithium-ion batteries (LIBs) was investigated for the first time. It delivers an initial discharge capacity of 463.9 mAh g−1 at 50 mA g−1 and maintains at 162.3 mAh g−1 after 50 cycles. This work provides the possibility for designing high-performance, long service life and lightweight LIBs for implantable medical devices.