Synthesis, electrochemical properties, and changes in crystal and electronic structures during charge/discharge process of spinel-type cathode materials Mg4V5-xNixO12 (x = 0, 0.3, 0.6, 1.0) for magnesium secondary batteries

Revisiting Delithiated Li_1.2Mn_0.54Ni_0.13Co_0.13O₂: Structural Analysis and Cathode Properties in Magnesium Rechargeable Battery Applications

“…The cathode properties of the Mg rechargeable battery are evaluated using both three-electrode cell and full-cell set-up. The composite cathode was prepared by grinding active material/SuperC65/PTFE in 5/5/1 weight ratio, previous reported composition, 5,6,[8][9][10] by agate mortar, then spread onto the Al-mesh current collector. For a three-electrode set-up, an AZ31 (Mg/Al/Zn of 96/3/1 weight ratio) foil and an Ag wire, were served as a counter and reference electrodes, respectively, and 0.3 M [Mg(G4)][TFSA] 2 /[PYR 13 ][TFSA] was used as an electrolyte.…”

“…Cathodes, anodes, and electrolytes of Mg rechargeable batteries, MRBs, which are being developed as next-generation batteries, have been actively studied since MRBs were first reported by Aurbach et al 1 MRBs feature a two-electron reaction based on the deinsertion/insertion of Mg 2+ , which results in a maximum capacity twice that of Li-ion batteries (LIBs) or monovalent alkali-ion batteries when the redox of the host materials can be compensated. In recent years, numerous working oxide cathode materials have been discovered or developed, [2][3][4][5][6] suggesting the possibility of developing a high-capacity cathode material in which Mg ions are the predominant mobile species.…”

Electrochemical Properties and Crystal and Electronic Structures of Spinel αMgCo₂₋<i>_x</i>Mn<i>_x</i>O₄-(1 − α)Mg(Mg_0.33V_1.67−<i>_y</i>Ni<i>_y</i>)O₄ for Magnesium Secondary Batteries

“…7 It was found that there was a high probability that unreacted MgO was present in the Mg 1.5 V 1.5 O 4 , and a reappraisal of the Mg/V ratio was needed. The authors synthesized Mg 1.33 V 1.67-y Ni y O 4 (y=0, 0.1, 0.2, 0.33) 8 in which the Mg/V ratio in Mg(Mg 0.5 V 1.5−x Ni x )O 4 (x = 0, 0.1, 0.2, 0.3) 9 was changed, and Ni substitution was carried out.…”

Enhanced charge storage of nanometric ζ-V2O5 in Mg electrolytes

“…The active material loading of 60 wt%, while lower than typical loadings for Li-ion electrode testing, is common for Mg-ion testing given the sluggish reaction kinetics of Mg insertion and removal. 15,32,33 These were pressed (8 tons) and dried at 100°C overnight under vacuum in the glovebox antechamber. Cells that were cycled repeatedly, possessed active material loadings in the range 1.5 to 2.5 mg cm −2 , whereas charged or discharged electrodes used for postmortem analysis were in the range 0.7 to 1.5 mg cm −2 .…”