Vse energy storage battery

The VSe 2 /MXene heterostructures showed improved energy storage performance with a specific capacitance of 144 F/g at a specific current of 1 A/g and a cycling life of 92.8% after 5000 charge–discharge cycles in a two-electrode symmetric configuration.

The obtained electrode achieves decent rate performance. The Li + storage mechanism is the intercalation followed by the conversion. The Li + diffusion barrier at the surface of VSe 2 is lower. VSe 2 is a promising anode material for Li-ion batteries (LIBs) due to its unique layered structure, and its metallic properties.

The ex-situ X-ray diffraction (XRD) results verify that VSe 2 stores lithium through intercalation and conversion reactions. This work may provide a new solution for synthesizing high-performance transition metal dichalcogenide electrode materials. 1. Introduction

VSe 2 demonstrates promising electrochemical performance, largely due to its high electrical conductivity, approximately 1000 S/m at 300 K. However, its high Gibbs free energy impedes its ability to achieve optimal electrochemical efficiency 19, 20, 21, 22.

The reversible capacity of the present VSe 2 /C–N at a current density of 0.1 A g −1 is higher than that already reported for VSe 2, as well as some other TMDs materials (WS 2, 2H–MoS 2) [25,,,,, ].

The Li + diffusion barrier at the surface of VSe 2 is lower. VSe 2 is a promising anode material for Li-ion batteries (LIBs) due to its unique layered structure, and its metallic properties. However, further exploration to investigate the lithium storage performance of VSe2 is limited by the synthesis difficulty of pure VSe 2.