In situ Synthesis of V2 O3 -Intercalated N-doped Graphene Nanobelts from VO x -Amine Hybrid as High-Performance Anode Material for Alkali-Ion Batteries

Intercalation pseudocapacitance in 2D N-doped V2O3 nanosheets for stable and ultrafast lithium-ion storage

2D N-doped V2O3 (N-V2O3) is synthesized as an anode material for Li-ion batteries by a facile strategy. Benefiting from the 3D V–V tunnel structure, sufficient active sites and N modifications, N-V2O3 exhibits stable and ultrafast Li-ion storage.

V2O3 Nanoparticles Confined in High-Conductivity and High-Throughput Carbon Nanofiber Nanohybrids for Advanced Sodium-Ion Capacitors

Electrode materials with high conductivity and high mass transport rate are highly desirable for a variety of electrochemical energy devices but face a grand challenge to be readily prepared yet. Here, we propose the design and preparation of a nanohybrid of V₂O₃ nanoparticles embedded in a multichannel carbon nanofiber (V₂O₃@MCNF) network with high conductivity and high mass transport. We demonstrate the V₂O₃@MCNF shows superior capability for sodium storage with an excellent capacity of 214.3 mA h g^-1 even at 5 A g^-1, thanks to its high conductivity for electron transfer and facilitated mass transportation endowed by the one-dimensional conductive multichannel fiber structure. Such favorable structures and properties in V₂O₃@MCNFs enable them to be applied as high-performance anodes of sodium-ion hybrid capacitors (SIHCs), successfully addressing the critical kinetics imbalance between Faradaic anodes and capacitive cathodes for application of SIHCs, which show impressively high energy/power densities along with impressive cycling performance over 10,000 cycles.