Results 41 to 50 of about 416,509 (227)

Useful Quantities and Diagram Types for Diagnosis and Monitoring of Electrochemical Energy Converters Using Impedance Spectroscopy: State of the Art, Review and Outlook

Batteries
The concept of pseudocapacitance is explored as a rapid and universal method for the state of health (SOH) determination of batteries and supercapacitors.
Peter Kurzweil, Wolfgang Scheuerpflug, Christian Schell, Josef Schottenbauer   +3 more
doaj   +1 more source

Assessment of Capacitance for Self-Excited Induction Generator in Sustaining Constant Air-Gap Voltage under Variable Speed and Load

Energies, 2018
The concept of a Self-Excited Induction Generator (SEIG) has introduced the concept of the placement of an induction machine for power generation in an isolated mode with external capacitance.
Ashish Sharma, Gagandeep Kaur
doaj   +1 more source

Nanoscale capacitance: a classical charge-dipole approximation

, 2013
Modeling nanoscale capacitance presents particular challenge because of dynamic contribution from electrodes, which can usually be neglected in modeling macroscopic capacitance and nanoscale conductance.
Gonzalez, Jonathan, Li, Yang, Lu, Jun-Qiang, Sierra, Carlos   +3 more
core   +2 more sources

Quantum capacitance and density of states of graphene

, 2010
We report on measurements of the quantum capacitance in graphene as a function of charge carrier density. A resonant LC-circuit giving high sensitivity to small capacitance changes is employed. The density of states, which is directly proportional to the
Dröscher, S., Ensslin, K., Ihn, T., Molitor, F., Roulleau, P., Stampfer, C., Studerus, P.   +6 more
core   +1 more source

Statistics of Mesoscopic Fluctuations of Quantum Capacitance [PDF]

, 1996
The Thouless formula \(G = (e^2/h)(E_c/\Delta)\) for the two-probe dc conductance $G$ of a d-dimensional mesoscopic cube is re-analysed to relate its quantum capacitance $C_Q$ to the reciprocal of the level spacing $\Delta$.
Jayannavar, A. M., Kumar, N.
core   +3 more sources

Graphene Oxide Decorated Nanometal-Poly(Anilino-Dodecylbenzene Sulfonic Acid) for Application in High Performance Supercapacitors

Micromachines, 2019
Graphene oxide (GO) decorated with silver (Ag), copper (Cu) or platinum (Pt) nanoparticles that are anchored on dodecylbenzene sulfonic acid (DBSA)-doped polyaniline (PANI) were prepared by a simple one-step method and applied as novel materials for high
Nomxolisi R. Dywili, Afroditi Ntziouni, Chinwe Ikpo, Miranda Ndipingwi, Ntuthuko W. Hlongwa, Anne L. D. Yonkeu, Milua Masikini, Konstantinos Kordatos, Emmanuel I. Iwuoha   +8 more
doaj   +1 more source

Ion-liquid based super-capacitors with inner gate diode-like separators

, 2019
We demonstrate that the capacitance of ionic-liquid filled supercapacitors is substantially increased by placing a diode-like structure on the separator membrane. We call the structured separator: gate, and demonstrate that the order of a p-n layout with
Chowdhury, Tazima S., Grebel, Haim
core   +1 more source

Direct Observation of Josephson Capacitance [PDF]

, 2005
The effective capacitance has been measured in the split Cooper pair box (CPB) over its phase-gate bias plane. Our low-frequency reactive measurement scheme allows to probe purely the capacitive susceptibility due to the CPB band structure.
A. Paila, D. V. Averin, L. Roschier, L. D. Landau, M. A. Sillanpää, M. Tinkham, P. J. Hakonen, T. Duty, T. Lehtinen, Yu. Makhlin   +9 more
core   +2 more sources

Nanostructured, Metal-Free Electrodes for the Oxygen Reduction Reaction Containing Nitrogen-Doped Carbon Quantum Dots and a Hydroxide Ion-Conducting Ionomer

Molecules, 2022
In this work, we studied the combination of nitrogen-doped carbon quantum dots (N-CQD), a hydroxide-ion conducting ionomer based on polysulfone (PSU) and polyaniline (PANI), to explore the complementary properties of these materials in high-performance ...
Ashwini Reddy Nallayagari, Emanuela Sgreccia, Maria Luisa Di Vona, Luca Pasquini, Florence Vacandio, Philippe Knauth   +5 more
doaj   +1 more source

Carbon materials obtained by carbonization of electrochemically gelled alginates and chitosan for supercapacitors [PDF]

Tehnika, 2020
The aim of this work is to investigate the capacitive characteristics of carbon-based materials obtained by carbonization of electrochemically synthesized gels based on alginate (CA-i, CA-3i, CA-3n), chitosan (CH-i), as well as their composites (CHA-i ...
Lužanin Olivera O., Janošević-Ležaić Aleksandra M., Gavrilov Nemanja M.   +2 more
doaj   +1 more source