Nanostructured layered vanadium oxide as cathode for high-performance sodium-ion batteries: a perspective

Abstract

Sodium-ion batteries (SIBs) have received intensive attentions owing to the abundant and inexpensive sodium (Na) resource. Layered vanadium oxides are featured with various valence states and corresponding compounds, and through multi-electron reaction they are capable to deliver high Na storage capacity. The rational construction of unique structures is verified to improve their Na storage properties. This perspective provides an overview of recent advances in layered vanadium oxide for SIBs, with a particular focus on construction of novel nanostructures, and mechanism studies via in situ characterization. Finally, we predict possible breakthroughs and future trends that lie ahead for high-performance layered vanadium oxides SIBs cathode.

Revealing the Chemical and Structural Evolution of V2O5 Nanoribbons in Lithium-Ion Batteries Using in Situ Transmission Electron Microscopy

“…The sluggish kinetics of Li ion insertion and extraction can be considerably accelerated by scaling it to nanometer-size dimensions. 10,20 For instance, fabricating low-dimensional V 2 O 5 nanostructures, including nanowires, 21 nanoparticles, 22,23 and nanoribbons, 20 tends to be one efficient way of decreasing the Li-ion diffusion distance in the battery.…”

“…In the meantime, the fast Li transport can occur along the a – b plane because of fast lithium ion diffusion channels with lower energy barriers. V 2 O 5 is regarded as a promising candidate electrode material for lithium-ion batteries. − …”

“…However, despite these promising attributes, the poor energy density of V 2 O 5 at high-rate cycling has limited the widespread commercial development of this material. − In order to improve the rate performance and capacity of V 2 O 5 -based Li-ion batteries, various measures have been taken. The sluggish kinetics of Li ion insertion and extraction can be considerably accelerated by scaling it to nanometer-size dimensions. , For instance, fabricating low-dimensional V 2 O 5 nanostructures, including nanowires, nanoparticles, , and nanoribbons, tends to be one efficient way of decreasing the Li-ion diffusion distance in the battery.…”

Understanding disorder in oxide-based electrode materials for rechargeable batteries

“…Furthermore, electrode materials, which are ab origine disordered or amorphous (i.e. prepared in this state), can provide high and stable battery capacities and in some cases, they even outperform their crystalline counterparts [50][51][52][53][54][55][56]. This clearly reveals that it is possible to maintain a percolating and well-functioning pathway for ion-migration in spite of severe structural disorder.…”

Hierarchical VOOH hollow spheres for symmetrical and asymmetrical supercapacitor devices

“…In the past decades, vanadium oxides and their related materials applied to energy storage have been extensively studied for electrode materials due to their low cost, multiple valences, novel chemical and physical properties, and high specific capacity [19][20][21][22][23][24][25]. Very recently, vanadyl hydroxide (VOOH) has received increasing attention with regard to its synthesis and properties.…”