Anchoring V₂O₅ nanosheets on hierarchical titanium nitride nanowire arrays to form core–shell heterostructures as a superior cathode for high-performance wearable aqueous rechargeable zinc-ion batteries

Abstract

Fiber-shaped Zn-ion batteries with TiN@V2O5 as cathode have excellent electrochemical performance.

Zinc based micro‐electrochemical energy storage devices: Present status and future perspective

“…Copyright 2013 and 2019, Elsevier. “Zn//Ag MBs,” “Zn//Br 2 MBs,” “Zn//ZnHCF@MnO 2 MBs,” “Zn//MnO x @PPy MBs,” and “Zn//V 2 O 5 @TiN MBs,” reproduced with permission 37‐42 . Copyright 2014, 2015, 2016, 2017, 2018, and 2019, Royal Society of Chemistry.…”

“…I, Schematic of all‐solid‐state Zn//TiN@V 2 O 5 MBs. Reproduced with permission 42 . Copyright 2019, Royal Society of Chemistry.…”

Rod-like anhydrous V2O5 assembled by tiny nanosheets as a high-performance cathode material for aqueous zinc-ion batteries

“…30 Among various vanadium-based materials, anhydrous V 2 O 5 is of particular interest owing to its simple conguration and high valence state of vanadium that enable more active sites and higher specic capacity. [32][33][34][35][36][37][38][39][40] That is, anhydrous V 2 O 5 is free of cations (e.g., Zn 2+ , Li + , Na + , K + , Mg 2+ , Ca 2+ ) and H 2 O molecules within its layers, thus possessing higher gravimetric and volumetric specic capacities than other vanadium-based materials in theory, while such characteristic also makes Zn 2+ ion uptake difficult due to the limited interlayer space. 34,41,42 For instance, porous V 2 O 5 nanobers prepared by electrospinning and subsequent calcination delivers merely 319 mA h g À1 at a rather low current density of 0.02 A g À1 , which is substantially lower than the theoretical specic capacity ($589 mA h g À1 based on the two-electron redox center of vanadium) of V 2 O 5 .…”

Rational Construction of V2O5@rGO with Enhanced Pseudocapacitive Storage for High‐Performance Flexible Energy Storage Device

“…Among various pseudocapacitive materials, transition metal oxides (TMOs) have become promising electrode materials for SCs because of their multiple chemical valence states and diverse morphological characteristics, such as NiO, Co 3 O 4 , Fe 2 O 3 , V 2 O 5 and so on, have attracted much attention for SCs application from researchers. Vanadium oxides (V 2 O 5 ) are particularly attractive because of its abundant sources, ease of fabrication, high Faradaic activity and abundant oxidation states, which can provide high charge storage capability . However, the low electronic conductivity, unstable crystal structure and slow electrochemical kinetics of V 2 O 5 have restricted its practical applications in energy conversion process .…”

“…Vanadium oxides (V 2 O 5 ) are particularly attractive because of its abundant sources, ease of fabrication, high Faradaic activity and abundant oxidation states, which can provide high charge storage capability. [14] However, the low electronic conductivity, unstable crystal structure and slow electrochemical kinetics of V 2 O 5 have restricted its practical applications in energy conversion process. [15] One way to mitigate these deficiencies is to prepare nanoscale materials, which is proven to be helpful in improving electrode-electrolyte penetration and ion diffusion efficiency, further increasing rate capability and output capacity in SCs.…”