Electrochemical double layer supercapacitor cells were fabricated and tested using composite electrodes of activated carbon with carbon black and poly(3,4-ethylenedioxythiophene) (PEDOT), and an organic electrolyte 1M TEABF4/PC solution. The effect of PEDOT on the performance of the EDLC cells was explored and the cells were characterised by electrochemical impedance spectroscopy (EIS), cyclic ...

Reduction of VO2 resistance by nearly 3 orders of magnitude through H2 treatment was reported for supercapacitor application. A specific discharge capacitance of 300 F g(-1) and a specific energy density of 17 W h kg(-1) at a rate of 1 A g(-1) are demonstrated with long-term cycling stability, which is 4 times higher than untreated samples.

A symmetric micro-supercapacitor is constructed by electrochemically depositing manganese oxide onto micro-patterned current collectors. High surface-to-volume ratio of manganese oxide and short diffusion distance between electrodes give an ultra-high areal capacitance of 56.3 mF cm(-2) at a current density of 27.2 μA cm(-2).

A smart supercapacitor was fabricated by loading a thermosensitive polymer P(NIPAM-co-SPMA) onto the surface of NiAl-layered double hydroxide (LDH) nanowalls grown on a flexible Ni foil substrate, which displays temperature-triggered on-off ion channels for controlling the electrochemical behavior.

UNLABELLED This work describes the potential of thin, spray-deposited, large-area poly(3,4-ethylenedioxythiophene)/poly(styrene-4-sulfonate) ( PEDOT PSS) conducting polymer films for use as transparent supercapacitor electrodes. To facilitate this, we provide a detailed explanation of the factors limiting the performance of such electrodes. These films have a very low optical conductivity of ...

Continuous, high-data-rate visual sensing and processing in the field is important for intelligent transportation, environmental monitoring, and area / context awareness. Rechargeable batteries in self-sustainable systems suffer from adverse environmental impact and fast aging. Advancements in supercapacitor energy density and low-power processors have reached an inflection point, where a data-...

Electrophoretic motion at low potentials is facilitated by redox chemistry occurring in a supercapacitor-based electrochemical energy storage system during charge and discharge. We show that MnO2 -modified electrodes can effectively alleviate the electrode surface polarization, the main factor that leads to inefficient electrophoresis at low voltages. A self-powered electrophoretic system based...

An ordered mesoporous WO(3-x) material was employed for use as a supercapacitor electrode. This material exhibited a high rate capability and an excellent capacitance (366 μF cm(-2), 639 F cm(-3)), which were probably attributed to the large ordered mesopores, high electrical conductivity, and high material density.

We introduce ammonia borane, a versatile reducing agent for graphene oxide (GO) reduction in both aqueous and organic solvents; it is nontoxic and more effective than hydrazine. More interestingly, ammonia borane reduction of GO tetrahydrofuran produced higher nitrogen- and boron-doped graphene that exhibited high supercapacitor performance.

A photoelectrochemical immunoassay was introduced for the first time into a microfluidic paper-based analytical device equipped with a paper supercapacitor for low-cost, simple, portable, and disposable point-of-care testing, based on a chemiluminescence light source and a digital multi-meter.