High-performance Na1.25V3O8 nanosheets for aqueous zinc-ion battery by electrochemical induced de-sodium at high voltage

Salty Ice Electrolyte with Superior Ionic Conductivity Towards Low‐Temperature Aqueous Zinc Ion Hybrid Capacitors

“…[ 1,2 ] Also, aqueous EES devices have the advantages of low cost, high ionic conductivity, and environmental friendliness. [ 3–5 ] However, the freeze of water at sub‐zero temperatures leads to a sharp drop in ionic conductivity of an aqueous electrolyte, and the insufficient ionic conductivity would cause the sudden failure of the devices. [ 6,7 ] Conventional strategies for solving the problem are to prevent the freeze of aqueous electrolytes at sub‐zero temperatures by adding additives, such as organic solvents, into electrolytes or increasing the concentration of electrolytes by adding more solutes, such as inorganic salts or acids.…”

LiV3O8 as an intercalation-type cathode for aqueous aluminum-ion batteries

“…30 The appearance of signals for V 3+ (2p 3/2 : 514.7 eV/2p 1/2 : 520.6 eV) and V 4+ (2p 3/2 : 516.2 eV/2p 1/2 : 522.4 eV) during discharging (−1.3 V) are consistent with the V 5+ → V 3+ transformation in the LVO cathode during Al 3+ intercalation. 27…”

“…22,23 Recently, energy researchers applied diverse materials engineering approaches to counter the electrostatic interactions associated with the multivalent charge carriers in the layered vanadium-based cathodes. 24–27 For example, the structural water engineering and alkali metal intercalation into the layered structure demonstrated as a prospective tactic to relieve the strong electrostatic nausea associated with the multivalent charge carriers. 19,28,29 In specific, alkali metal ions constructed layered vanadates are identified as structural stabilizers due to the strong covalent bonds, which increase the ion diffusivity by increasing the interplanar distance.…”

Simultaneous pre-intercalation of caesium and sodium ions into vanadium oxide bronze nanowires for high-performance aqueous zinc-ion batteries

“…Additionally, it was demonstrated that the diversity of monovalent cations (Li + , Na + , K + and NH 4 + ) can be used to engineer the interplanar spacing, which is favourable for realizing the intercalation of large-size Zn 2+ -ion hydrates. [28][29][30][31][32][33][34][35] In this case, structural water as a charge shield can mitigate the electrostatic interaction between intercalated Zn 2+ ions and the vanadium oxide frameworks towards the enhancement of the ion-diffusion rate and electrical conductivity. For example, He et al designed and constructed Na 0.33 V 2 O 5 nanowires with improved electrical conductivity.…”