Optimized strategies to enhance electrochemical properties of ammonium vanadates for aqueous Zn ion batteries

Low-Cost and Large-Scale Preparation of H2O and Mg2+ Co-Preintercalated Vanadium Oxide with High-Performance Aqueous Zn-Ion Batteries

“…These peaks are located at 0.7, 1.0 V (charge) and 0.9, 0.55 V (discharge), respectively, which are consistent with the voltage platforms of CV curves shown in Figure d. In addition, two distinct redox peaks (peak 3 and 4) might be due to the valence states of vanadium in materials being at an intermediate valence state of about +4.52 . These almost completely coincident curves and the position of the fixed redox peaks are strong evidence of excellent circulation ability of the MgVO-1.0 electrode.…”

“…In addition, two distinct redox peaks (peak 3 and 4) might be due to the valence states of vanadium in materials being at an intermediate valence state of about +4.52. 59 These almost completely coincident curves and the position of the fixed redox peaks are strong evidence of excellent circulation ability of the MgVO-1.0 electrode. However, in the case of MgVO-0 (Figure S3), the coincidence of these curves is very low and the positions of redox peaks are irregular, meaning poor structural stability of the MgVO-0 electrode.…”

Defect engineering and morphology adjustment assist NH4V4O10 to be a high-performance aqueous zinc ion battery cathode

“…Fig. 3e shows the performance of SNVO compared with some recently published zinc ion battery cathode materials, such as NVO/CNTs, 55 KNVO, 56 Al–NVO@CC, 39 NVO, 57 Na 2 V 2 O 16 ·2.14H 2 O, 58 rGO/δ-NVO, 59 H 2 V 3 O 8 , 60 NA-NVO, 61 F-NVO, 62 and SNVO shows better electrochemical performance. Fig.…”