In situ constructing amorphous V2O5@Ti3C2Tx heterostructure for high-performance aqueous zinc-ion batteries

A stepwise oxidation strategy for the synthesis of amorphous V2O5@V2CTxnanohybrid cathodes toward high-performance aqueous Zn-ion batteries

“…These results again verify that the formation of ZVO is the main cause of capacity decay. The satisfactory Zn-storage performance of the prepared amorphous V 2 O 5 @V 2 CT x exceeds that of most recently reported Zn-ion battery cathodes, 21,24–26,41,48–53 and a comparison of the Zn-storage performance of the present work with the recently reported Zn-ion battery cathodes is shown in Table S1 †…”

“…In contrast, the amorphous framework not only provides isotropic ion diffusion pathways and abundant zinc-storage sites, but the open framework effectively mitigates the "volume expansion" and provides low internal energy and excellent structural stability. 21,22 Besides, due to the low intrinsic conductivity of vanadium oxide, the design of high-performance cathodes requires consideration of a suitable conductive substrate to accelerate electron transport. The availability of a new twodimensional material, V 2 CT x MXene, provides an opportunity to develop such high-performance ZIB cathodes.…”

Recent Progress of Amorphous Nanomaterials

“…According to Zhao’s research group, the a-V 2 O 5 @Ti 3 C 2 T x heterostructure was successfully prepared by combining amorphous V 2 O 5 with Ti 3 C 2 T x MXene in situ to improve the performance of aqueous rechargeable Zn ion batteries (Figure a–d). Due to the special amorphous structure of a-V 2 O 5 , the excellent conductivity of Ti 3 C 2 T x MXene, and the strong synergistic effect between the two components, the a-V 2 O 5 @Ti 3 C 2 T x heterostructure exhibited isotropic ion diffusion paths, abundant ion storage sites, and excellent conductivity.…”

Vertically Aligned Bismuthene Nanosheets on MXene for High-Performance Capacitive Deionization

“…In recent years, a group of two-dimensional transition metal carbide/nitride (MXene) materials have attracted wide attention because of its special lamellar structure, large specific surface area, and good electrical conductivity. − Typically, MXene is prepared by selectively etching A layers from MAX phase precursors (M represents transition metal, X stands for C or/and N, A represents Al, Ga, Si, etc.) using an acidic aqueous solution containing fluoride ions, such as hydrofluoric acid (HF) or a mixture of lithium fluoride and hydrochloric acid (LiF+HCl). ,, Nonetheless, the high toxicity and corrosive property of an acidic aqueous solution containing fluoride ions give rise to considerable safety and environmental problems. , Recently, a safe and environmentally friendly Lewis acidic etching route was developed by using nonhazardous Lewis acid molten salt. − Typically, Ti 3 C 2 T x MXene (T represents surface terminations, such as −O, and −Cl) can be prepared by using a Lewis acid (such as copper chloride) to remove Al element from Ti 3 AlC 2 .…”