Controlling ligand field of Li3VO4 to enhance the electrochemical performance for lithium-ion batteries

• • Oxygen vacancy engineering in Li3VO4 increases specific capacity by 35%: 532 mAh/g at 0.1 A/g versus 394 mAh/g for pristine LVO, directly enhancing anode energy density for LIBs. • • Cycling stability improves by 69%: Vö-LVO retains 398 mAh/g after 500 cycles at 1 A/g, compared to 236 mAh/g for pristine LVO, indicating superior long-term durability for grid storage. • • Ligand field distortion reduces band gap and expands ion transport channels, boosting electronic conductivity and ion diffusion kinetics, which is critical for high-rate applications. • • The strategy of breaking local [VO4] symmetry via oxygen vacancies is a novel, scalable approach to raise the electrochemical potential and voltage output, offering a new design paradigm for intercalation anodes.