Results 241 to 250 of about 51,357 (291)

Enhancement of AMTEC electrodes and current collectors

AIP Conference Proceedings, 1995
An improved electrode deposition technique has been developed for a Alkali Metal Thermal to Electric Converter (AMTEC). The innovative Sodium Modulated Electrode (SME) deposition technique has been developed which selectively deposits the electrode on inactive Na sites and adjacent to active Na sites on the electrolyte surface.
Robert C. Svedberg, Jan E. Pantolin, Robert K. Sievers, Thomas K. Hunt   +3 more
openaire   +1 more source

Effect of nonlinear collector capacitance on collector current rise time

IRE Transactions on Electron Devices, 1956
The collector capacity, C, of a junction transistor is known to vary as a nonlinear function of the voltage, V, across it. A calculation is made of the collector current rise time of a grounded emitter alloy junction transistor for which C = kV-1/2.
openaire   +1 more source

Collector capacitance versus collector current for a double-diffused transistor

Proceedings of the IEEE, 1969
Collector junction capacitance is computed for a diffused reverse-biased collector junction in the presence of a limited velocity electron current. Two cases are considered--constant collector background doping and a heavily doped subcollector background.
openaire   +1 more source

Nanocarbon Current Collectors for Aqueous Batteries

ECS Meeting Abstracts, 2017
Carbon materials are a promising alternative to metal current collectors that are currently used in aqueous batteries, because of their light weight, high electrical conductivity, and promising corrosion resistance. In this report, we investigate the corrosion resistance of multiple flexible and robust nanocarbon current collectors (NCCCs) for ...
John Hayden, Chuan-Fu Lin, Wei Luo, Gary W Rubloff, Liangbing Hu   +4 more
openaire   +1 more source

Theoretical Current Multiplication of a Cylindrical Hook Collector

IBM Journal of Research and Development, 1961
An analysis is given on the mechanisms of operation for a current-multiplying hook collector of cylindrical geometry. Mathematical equations are presented which establish the minority carrier transport efficiency within a cylindrical hook collector region; both surface and bulk recombination are assumed to be present.
openaire   +1 more source

Frictional and electrical interactions in current collectors

Wear, 1982
Abstract Numerical results are given for electric current flow through a sliding contact that involves a graphite brush and a copper slip ring. The contact of length 2 l and unit depth moves with velocity c along the brush face. It is found that for a given fixed set of operating conditions (current I , sliding velocity V , contact force F N
M.D. Bryant, R.A. Burton
openaire   +1 more source

Current collectors for trolley cars

1958
Current collection always operates with sliding contacts, even the wheel trolley does; it slides considerably on the wire. The reason of introducing the wheel was, of course, the hope of less wear, which, however, was not gained. Actually the wire usually wears a few times more when the counter contact is a metallic wheel than in the case of a carbon ...
openaire   +1 more source

Characteristics of Current Collector Materials for Supercapacitors

2020
Current collector has a major role in electrochemical performance and cycle stability of supercapacitor. It collects electrons and supports the electrode material. Conductivity and contact resistance with the electrode material of a current collector have a direct influence on the power density and capacitance of a supercapacitor.
Kapil Dev Verma, Prerna Sinha, Soma Banerjee, Kamal K. Kar   +3 more
openaire   +1 more source

High collector current in epitaxial transistors

1971 International Electron Devices Meeting, 1971
In this paper we unify the treatment of high current in the collector region of epitaxial transistors. New results yielded by this unification include: a) specification of the conditions that determine the predominant mechanism controlling the degradation of β and f T .
D.L. Bowler, F.A. Lindholm
openaire   +1 more source

Review on Nanoarchitectured Current Collectors for Pseudocapacitors

Small Methods, 2018
AbstractSupercapacitors are of high importance as electrochemical energy storage devices attributing to their outstanding power performance, excellent reversibility and long cycle life. But meanwhile, they suffer from low energy when compared with batteries. Pseudocapacitive materials with a high theoretical capacitance hold a great promise in boosting
Long Liu, Huaping Zhao, Yong Lei
openaire   +1 more source