Ti₃C₂T_x (MXene)-wrapped V₂O₅/Fe₂O₃ composites for enhanced-performance supercapacitors

Abstract

Among transition-metal-oxides, vanadium oxides and iron oxides have attracted much attention for electrochemical energy storage devices due to their high theoretical specific capacities and multiple variable valence states of V...

Efficient Construction of MXene/V2O5 Nanocomposites for Optimizing the Combustion of Ammonium Perchlorate-Based Composite Solid Propellants

“…As shown in Figure S2, accordion-like layered MXene sheets were formed by etching MAX with a printed strut structure. , From Figure a, it could be observed that pure V 2 O 5 presented a massive structure due to the self-aggregation of V 2 O 5 nanoparticles . From Figure b–e, it was obvious that the self-aggregation of V 2 O 5 gradually weakened and a clear nanosheet structure appeared with increasing ratio of MXene/V 2 O 5 from 10 to 40 wt %, suggesting that V 2 O 5 nanoparticles were successfully loaded on the surface of MXene nanosheets .…”

“…34,47 From Figure 3a, it could be observed that pure V 2 O 5 presented a massive structure due to the self-aggregation of V 2 O 5 nanoparticles. 48 From Figure 3b−e, it was obvious that the self-aggregation of V 2 O 5 gradually weakened and a clear nanosheet structure appeared with increasing ratio of MXene/V 2 O 5 from 10 to 40 wt %, suggesting that V 2 O 5 nanoparticles were successfully loaded on the surface of MXene nanosheets. 49 In particular, MXV-4 showed a special uniform porous structure, which indicated that V 2 O 5 nano-particles could grow uniformly on the surface of MXene when the mass ratio of MXene to V 2 O 5 was 4: 6.…”

Recent Advances and Strategies in MXene-Based Electrodes for Supercapacitors: Applications, Challenges and Future Prospects

“…Wang et al [ 295 ] reported the synthesis of Ti 3 C 2 T x -wrapped V 2 O 5 /Fe 2 O 3 (Ti 3 C 2 T x @VFO) nanostructures using a hydrothermal method. The VFO nanostructures on carbon cloth showed a capacitance of 435.2 mF cm −2 at 2 mA cm −2 .…”

Passion fruit-like microspheres of FeS2 wrapped with carbon as an excellent fast charging material for supercapacitors

“…[6][7][8] Recently, considering their abundance, low cost and excellent properties, transition metal oxides (TMOs) and transition metal sulfides (TMSs) have been studied as pseudocapacitor electrode materials for supercapacitors, e.g., FeS 2 , MoO 3 , Co 3 O 4 , CuS, Mn 3 O 4 , etc. [9][10][11][12][13] Owing to the redox reaction mechanism, these materials can express higher capacitance than electric double-layer capacitors (EDLCs). 14,15 Compared to transition metal oxides, transition metal sulfide electrodes show better electrical conductivity due to their lower band gap and electrochemical activity.…”

“…, FeS 2 , MoO 3 , Co 3 O 4 , CuS, Mn 3 O 4 , etc. 9–13 Owing to the redox reaction mechanism, these materials can express higher capacitance than electric double-layer capacitors (EDLCs). 14,15 Compared to transition metal oxides, transition metal sulfide electrodes show better electrical conductivity due to their lower band gap and electrochemical activity.…”