“…[27][28][29][30] Nevertheless, similar to other transition metal oxides, manganese vanadate suffers from some disadvantages such as poor conductivity for electron transfer and ion diffusion, and severe volume changes during the charging and discharging process, leading to crushing of the electrode material and thus a suboptimal rate performance and cycling stability. To address these issues, many strategies have been used to overcome these drawbacks, such as nanohybrids, 6,10,12,31 surface-coating, 5,11,32 interfacial engineering, 33 and element-doping. 34 Thereinto, the doping strategy is an effective method to improve the electrical conductivity of transition metal oxides, and can introduce oxygen vacancies, cations, and anions to modulate the energy band structure, thus improving their electrical conductivity.…”