A self-standing CaV6O16•3H2O paper electrode for lithium-ion batteries

CaV6O16 center dot 3H(2)O 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 center dot 3H(2)O nanobelts with good tailorability. By simply cutting and drying the 3D tubular structure, a CaV6O16 center dot 3H(2)O paper has been successfully prepared. Electrochemical performance of the CaV6O16 center dot 3H(2)O 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. (C) 2021 Elsevier B.V. All rights reserved.