An MgV3O8 anode exhibiting enhanced rate capability and stability for lithium storage applications

Abstract

The development of anode materials with high rate performance as well as favourable working durability is key for next-generation lithium-ion batteries (LIBs). Here, MgV₃O₈ is reported as an advanced anode material, using a facile and scalable solution combustion technology. The MgV₃O₈ anode shows a “near-zero” volume change (<10% over 1000 cycles). This can be explained by a solid-solution Li⁺ storage mechanism, leading to superior cycling stability. Consequently, the MgV₃O₈ electrode achieves a remarkable capacity of approximately 102.6 mA h g⁻¹ at 2.0 A g⁻¹, along with a low fading rate of 0.001% per cycle over 3000 cycles.