Rational engineering of VS₄ nanorod array on rose-shaped VS₂ nanosheets for high-performance aluminium-ion batteries

Abstract

High performance aluminum-ion (Al-ion) batteries are widely concerned owning to high theoretical capacity, abundance of Al metal and good safety. Here, we develop a hierarchical VS2@VS4 composing of VS4 nanorod...

Tremella-like Vanadium Tetrasulfide as a High-Performance Cathode Material for Rechargeable Aluminum Batteries

“…In this work, we found that the VS 4 cathode can maintain a better cycle stability at a higher current density. These results above were consistent with other chalcogenide materials. − …”

“…This comprehensive work indicates that the VS 4 cathode shows great potential for the development of long-life RABs for large-scale stationary applications. This work exemplifies the rational design of sulfide-based energy-storage materials for highly efficient RABs. − ,− ,, …”

“…The high theoretical capacity results from its alterable valence state from V 5+ to V 0 . VS 4 possesses a linear-chain structure with 5.83 Å interchain distance by van der Waals force composed by V 4+ and S 2 2– ions. − This special structure provides sufficient room for charge carrier intercalation/deintercalation with fast reaction transport kinetics. Furthermore, as a result of the 3D structure with high surface areas and unique mesoporous structures, VS 4 also provides lots of channels for the entrance of electrolyte.…”

“…When the current density was 100 mA g −1 , the discharge capacity was maintained at 80 mAh g −1 . Wang et al 61 developed a hierarchical VS 2 @VS 4 composed of a VS 4 nanorod array in situ grown on VS 2 rose-shaped nanosheets, and the first discharge capacity was 194.9 mAh g −1 . They proposed the energy storage mechanism that Al 3+ intercalated into this compound during the charge and discharge processes.…”

Vanadium tetrasulfide as an earth-abundant and noble-metal-free cocatalyst for a solar-to-hydrogen conversion reaction

“…21 More recently, vanadium-based materials, such as vanadium disulfide, vanadium tetrasulfide, and vanadium carbide/ nitrides, have emerged as promising materials for energy storage owing to their unique combination of high electronic conductivity and high sulfur content. [22][23][24] Gnanasekhar et al and Shao et al fabricated VS 2 -decorated amorphous carbon and graphitic carbon nitride nanocomposites, respectively; the metallic characteristics of VS 2 and its ultrahigh edge active sites promoted the H 2 evolution rate. 25,26 The metallic-type VN was also reported as a noble-metal-free cocatalyst that increased the photocatalytic H 2 evolution activity of CdS nanoparticles (NPs).…”