Synthesis of Mn2V2O7 nanopebbles via hydrothermal method and its high-efficiency energy storage for supercapacitors

Interplay of Capacitive and Diffusion Contributions in Redox Active Complex Metal Oxide Rods Channelled into MXene for Improved Charge Transfer Dynamics

“…According to eqs and , the specific energy density ( E ) and power density ( P ) of the device have been calculated and E is found to be 106 Wh kg –1 with P being 1000 W kg –1 . Utilizing the charge/discharge curves at various current densities, the Ragone plots depict the specific energy densities and specific power densities for the MVO/MXene//AC asymmetric supercapacitor (ASC), showing a comparison with previously reported ASCs (Figure (e)). ,− In addition to its remarkable power capability, the MVO/MXene//AC ASC demonstrates excellent cycling stability within the substantial voltage window of 0–2.0 V. In Figure (f), the capacitance retention of the device is presented as a 5000 cyclic charge/discharge at a current density of 10 A g –1 . After 5000 cycles, approximately 88% capacitance was retained with respect to the initial capacitance, and the Coulombic efficiency remained at 96%, demonstrating superior stability.…”

P-doping boosting electronic properties and ionic kinetics of MnV2O6 for high-performance lithium-ion batteries

“…25,26 Meanwhile, manganese vanadate also exhibits promising electrochemical behaviors, which originate from its layered structure, relatively low molecular weight, and the polyvalent properties of manganese. [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.…”