Recent advances in LiV3O8 as anode material for aqueous lithium-ion batteries: syntheses, modifications, and perspectives

Abstract The development of new energy makes modern society have a higher requirement for energy storage systems. At the same time, traditional lithium-ion batteries have their shortcomings, such as a shortage of metal lithium resources, harsh preparation conditions, and toxic organic electrolytes. Therefore, people have gradually begun to research aqueous lithium-ion batteries (ALIBs). Aqueous electrolytes can overcome the disadvantages of traditional organic electrolytes such as low safety and high production cost. Due to high specific discharge capacity and low operating voltage, LiV3O8 is considered a promising anode for ALIBs. However, inherent low conductivity and unsatisfactory cycle performance limit its further application, so it is necessary and meaningful to conduct further research on LiV3O8. This paper first introduces the structure, operation mechanism, and syntheses of LiV3O8. Then the modification methods to improve the performance are reviewed from coating modification, introducing conductive agent, ion doping, and nano crystallization. Finally, reasonable suggestions and perspectives for LiV3O8 are put forward.