A5023874806- Supercapacitor Materials and Fabrication
- Advancements in Battery Materials
- Conducting polymers and applications
- Transition Metal Oxide Nanomaterials
- Electrospun Nanofibers in Biomedical Applications
- Electrocatalysts for Energy Conversion
- Advanced Memory and Neural Computing
- Biodiesel Production and Applications
- Advanced Photocatalysis Techniques
- Advanced battery technologies research
University College London
2017-2019
Transnational Press London
2018
A simple method is developed to boost the electrochemical performance of graphitic carbon nitride/graphene composites as supercapacitor electrodes.
Different characterization techniques were used to analyse the chemically activated carbons in (i) one dimensional analysis including MIP and BET, (ii) two dimensions SEM TEM (iii) three X-ray CT. This structure has been directly linked electrochemical performance of supercapacitors for first time.
Fabrication of supercapacitor devices with the carbon cloth supported W2N@carbon ultrathin layer core-shell structures (W2N@C CS/carbon cloth) were realized by aerosol-assisted chemical vapour deposition (AACVD) followed an ammonia annealing process. The representative electrodes delivered excellent areal specific capacitance 693.0 mF cm-2 at 5 mV s-1 in a three electrode testing system, good rate capability ~ 78% retention when scan increased 10 times and superior cycling stability 91%...
Activated carbons, with different surface chemistry and porous textures, were used to study the mechanism of electrochemical hydrogen oxygen evolution in supercapacitor devices. Cellulose precursor materials activated potassium hydroxide (KOH) ratios, behaviour was studied 6 M KOH electrolyte. In situ Raman spectra collected obtain structural changes carbons under severe oxidation reduction conditions, obtained data correlated cyclic voltammograms at high anodic cathodic potentials....
Doping is an effective way to optimize the properties of electrode material. Here hollow Cu-doped NiO microspheres were obtained<italic>via</italic>hydrothermal way, which exerts prominent initial capacity and better rate capability as anode materials.
Physically integrated energy storage devices are gaining increasing interest due to the rapid development of flexible, wearable and portable electronics technology. For first time, supercapacitor components have been into a printed circuit board (PCB) construct. This proof-of-concept study paves way for integrating supercapacitors power hybridising with PCB fuel cells. Commercial Norit activated carbon (NAC) was used as electrode material tested in two types electrolytes, sodium sulfate...
Supercapacitors, also known as ultracapacitors or electrochemical capacitors, have recently attracted significant attention, mainly due to their long cycle life and high power density, in turn bridging the energy/power gap between dielectric capacitors (high input) fuel cells/batteries energy storage) (1). One of functions a supercapacitor is compliment dispatchibility cells batteries hybrid systems, by providing necessary for acceleration recuperating brake (2). Further developments this...