Recent Development in Vanadium Pentoxide and Carbon Hybrid Active Materials for Energy Storage Devices

Abstract

With the increasing energy demand for portable electronics, electric vehicles, and green energy storage solutions, the development of high-performance supercapacitors has been at the forefront of energy storage and conversion research. In the past decade, many scientific publications have been dedicated to designing hybrid electrode materials composed of vanadium pentoxide (V2O5) and carbon nanomaterials to bridge the gap in energy and power of traditional batteries and capacitors. V2O5 is a promising electrode material owing to its natural abundance, nontoxicity, and high capacitive potential. However, bulk V2O5 is limited by poor conductivity, low porosity, and dissolution during charge/discharge cycles. To overcome the limitations of V2O5, many researchers have incorporated common carbon nanostructures such as reduced graphene oxides, carbon nanotubes, carbon nanofibers, and other carbon moieties into V2O5. The carbon components facilitate electron mobility and act as porous templates for V2O5 nucleation with an enhanced surface area as well as interconnected surface morphology and structural stability. This review discusses the development of various V2O5/carbon hybrid materials, focusing on the effects of different synthesis methods, V2O5/carbon compositions, and physical treatment strategies on the structure and electrochemical performance of the composite material as promising supercapacitor electrodes.

Recent Development in Novel Lithium-Sulfur Nanofiber Separators: A Review of the Latest Fabrication and Performance Optimizations

“…As we generate more energy from renewable sources, such as solar [ 5 ], hydroelectric [ 6 ], thermoelectric [ 7 ], and microbial [ 8 ], we require high capacity that can store excess energy in low demand and release the stored energy on demand. Thus, there is growing interest in next-generation energy storage technologies like supercapacitors [ 9 ], sodium-ion batteries [ 10 ], and solid-state batteries [ 11 ].…”

Redox-Guided Synthesis of Au–V2O5–MnO2 Nanoflower Composites with Enhanced Electrical Conductance for Supercapacitor Applications

“…Such composites with superior surface morphology exhibit improved electrochemical performance. Recent studies report that the increased specific surface area of such nanocomposites drastically affects the specific capacitance , as well as the power density. In addition, the proper choice of a suitable electrolyte plays an important role in supercapacitor applications.…”

CNT/turanite/FeNdCo-alloy electrodes to enhance the capacitance of waterproof/eco-friendly supercapacitors

“…28 In general, SC electrodes made with CNTs and V 2 O 5 have capacitance values of 100-630 F g À1 , but their energy densities are below 100 W h kg À1 . 29,30 More importantly, their discharge times are short (maximum 1000 s). Moreover, solid state devices made with CNTs, and vanadium oxides have been scarcely reported: Chen et al 31 reported a symmetric SC made with CNT/V 2 O 5 electrodes, which provided a capacitance/ energy-density of 115 F g À1 /40 W h kg À1 .…”