Li4VNi3P4O16

Li₄VNi₃P₄O₁₆ is a mixed-metal phosphate ceramic compound combining lithium, vanadium, and nickel in a phosphate framework. This material is primarily of research interest for energy storage applications, particularly as a potential cathode material for lithium-ion batteries, where the mixed-valence transition metals and lithium content enable electrochemical activity. The compound represents an emerging class of polyanion-based cathodes that engineers evaluate for high energy density, thermal stability, and cycle life improvements over conventional oxide cathodes.