Integrating molybdenum into zinc vanadate enables Zn₃V₂MoO₈ as a high-capacity Zn-supplied cathode for Zn-metal free aqueous batteries

Abstract

The commercialization of aqueous zinc-ion batteries (AZIBs) has been hindered by the obsession of Zn-metal anode, just like the early days of lithium-ion batteries. Developing Zn-metal free aqueous batteries (ZFABs)...

Novel NH4V4O10-Reduced Graphene Oxide Cathodes for Zinc-Ion Batteries: Theoretical Predictions and Experimental Validation

“…NVO@rGO 507 mAh g -1 at 0.2 A g -1 (100%, 50 cycles) This work (NH4)0.37V2O5•0.15H2O 398 mAh g -1 at 0.5 A g -1 (90%, 50 cycles) [26] KNH4V4O10 405 mAh g -1 at 0.4 A g -1 (92.1%, 100 cycles) [27] Cs-V2O5 369 mAh g -1 at 0.1 A g -1 (90%, 200 cycles) [28] (NH4)xV2O5•nH2O 372 mAh g -1 at 0.1 A g -1 (63%, 50 cycles) [29] Zn3V2MoO8 337 mAh g -1 at 0.2 A g -1 (90%, 70 cycles) [30] NaCaV2O5 310 mAh g -1 at 0.5A g -1 (100%, 200 cycles) [31] (NH4)2V4O9 493 mAh g -1 at 0.2 A g -1 (83.2%, 100 cycles) [32] V3O7/V6O13 415 mAh g -1 at 0.1 A g -1 (73%, 100 cycles) [33] Na2V6O16•3H2O 401 mAh g -1 at 0.3 A g -1 (91.8%, 300 cycles) [34] Od-HNaVO@rGO 380 mAh g -1 at 0.5 A g -1 (97.4%, 200 cycles) [35] Figure 7 presents the galvanostatic charge-discharge (GCD) curves for NVO@rGO and NVO at a current density of 0.2 A g −1 . The curves exhibit similar shapes, indicating analogous electrochemical processes are underway in both samples.…”