Themed collection Supercapacitors

We investigate the principal elements affecting the properties of bimetallic oxide electrodes to reveal the relevant energy storage mechanisms.

This mini-review presents a summary of recent developments in supercapacitor research and technology, including all kinds of supercapacitor design techniques using various electrode materials and production methods for addressing energy storage and harvesting issues.

Overcoming the global energy crisis due to vast economic expansion with the advent of human reliance on energy-consuming labor-saving devices necessitates the demand for next-generation technologies in the form of cleaner energy storage devices.

In the past few years, intensive attention has been focused on birnessite based electrodes for supercapacitors.

Doping-vacancy double-defective Mn–O–F ultrafine nanowires power advanced Li/Na-ion capacitors with dominant conversion mechanisms.

Machine learning (ML) methods were applied to predict the capacitance of carbon-based supercapacitors.

Phytic acid (PA) mediates the controlled synthesis of amorphous cobalt phosphate/carbon (CoPi/C) composite which works in both the positive and negative potential ranges, making it possible to assemble a symmetrical supercapacitor (SSC) device.

N-doped carbon covering on the surface of VN inhibits the oxidation of VN in alkaline electrolyte and increases the electrical conductivity of composite. Therefore, favorable electrochemical behaviors of the V₂O₃/C//VN/NCS device are exhibited.

Porous carbon materials are synthesized from pomelo valves by the hydrothermal activation of H₃PO₄ followed by simple carbonization.

A simple hydrothermal route with a post annealing treatment was used to prepare MgCo₂O₄ porous nanoflakes with excellent electrochemical performances.

Efficient storage of sunlight in the form of charge is accomplished by designing and implementing a photo-supercapacitor (PSC) with a novel, cost-effective architecture.

Multi-dimensional nanomaterials have drawn great interest for application in supercapacitors due to their large accessible surface area.

Supercapacitors have attracted significant attention in the last few years as they have the capability to fulfill the demand for both power and energy density in many energy storage applications.

Rational design and synthesis of efficient electrodes with pronounced energy storage properties are crucial for supercapacitors.

The energy and environmental crises have forced us to search for a new green energy source and develop energy storage and environmental restoration technologies.

Composites of multi-walled carbon nanotubes (MWCNTs) and superparamagnetic magnetite nanoparticles, Fe₃O₄@MWCNT, were synthesized in DMF in a vortex fluidic device (VFD).

A facile strategy is developed for fabrication of carbon nanobranches (CNBs) via in situ pyrolysis of starch.

The morphologies of ZnCo₂O₄ were controlled by an ultrasonic treatment to achieve high-performance supercapacitors.

The current work presents a hybrid type of energy storage device composed of both graphene foam and zinc oxide electrodes, which exhibits both the electrochemical performance of a supercapacitor with a relatively higher power density, and a battery with a relatively higher energy density as compared to each individual component as single devices.

The electrochemical performance of the flexible solid-state supercapacitor device comprising ultrathin Ni–V layered double hydroxide nanosheets grown on carbon cloth showed a negligible change upon bending and twisting of the device.

Hierarchically nanostructured N/S-co-doped hollow carbon nanofibers are fabricated as anodes for high-energy Na-ion capacitors.

A MoS₂ nanoflower@rGO composite has been prepared using a simple and scalable hydrothermal method followed by an ultra sonication process.

Silver nanowire (Ag NW) based composites have shown a great potential not just in transparent electrodes but in diverse functional applications.