Synthesis and electrochemical performance of NaV6O15 microflowers for lithium and sodium ion batteries

Abstract

High first discharge capacity of 255 mA h g⁻¹ (vs. Li⁺/Li) and 130 mA h g⁻¹ (vs. Na⁺/Na) were observed in NaV₆O₁₅ microflowers and the capacity retention reaches 105% and 64% after 50 cycles at the current density of 100 mA g⁻¹ and 50 mA g⁻¹, respectively.