Results 261 to 270 of about 873,347 (342)

A high-energy-density supercapacitor with multi-shelled nickel-manganese selenide hollow spheres as cathode and double-shell nickel-iron selenide hollow spheres as anode electrodes.

Nanoscale, 2021
Thanks to the attractive structural characteristics and unique physicochemical properties, mixed metal selenides (MMSes) can be considered as encouraging electrode materials for energy storage devices.
Akbar Mohammadi Zardkhoshoui, Bahareh Ameri, S. S. Hosseiny Davarani   +2 more
semanticscholar   +1 more source

Hollow Molybdate Microspheres as Catalytic Hosts for Enhancing the Electrochemical Performance of Sulfur Cathode under High Sulfur Loading and Lean Electrolyte

Advanced Functional Materials, 2021
Lithium–sulfur battery possesses a high energy density; however, its application is severely blocked by several bottlenecks, including the serious shuttling behavior and sluggish redox kinetics of sulfur cathode, especially under the condition of high ...
Lu Wang, Guo-Ran Li, Sheng-Qi Liu, Xue-Ping Gao   +3 more
semanticscholar   +1 more source

Physical Processes in Hollow Cathodes

AIAA Journal, 1976
Hollow cathodes with cavity diameters of 1.9 cm have been operated in an MPD arc configuration at discharge currents from 0.25 kA to 30 kA. Current and potential distributions, measured with probes in the cathode cavity, show that a spontaneous mode of hollow cathode operation, wherein the current distribution penetrates upstream into the cavity, has ...
M. KRISHNAN, R. JAHN, W. VON JASKOWSKY, K. CLARK   +3 more
openaire   +1 more source

SERT II - Durability of the hollow cathode and future applications of hollow cathodes

Journal of Spacecraft and Rockets, 1970
1 Kerslake, W. R., Byers, D. C., and Staggs, J. F., "SERT II Experimental Thruster System," AIAA Paper 67-700, Colorado Springs, Colo., 1967; also "SERT II: Mission and Experiments," Journal of Spacecraft and Rockets, Vol. 7, No. 1, Jan. 1970, pp. 4-6. 2 Kerrisk, D. J. and Kaufman, H. R., "Electric Propulsion Systems for Primary Spacecraft Propulsion,"
VINCENT K. RAWLIN, WILLIAM R. KERSLAKE
openaire   +1 more source

Dependence of Cathode Aperture in Pulsed Hollow‐Cathode Discharges

Applied Physics Letters, 1992
The effect of electric field penetration in the hollow-cathode region of self-initiated pulsed hollow-cathode discharge is investigated. The discharge is operated in hydrogen at pressures between 30 and 200 mTorr with applied voltages between 10 and 30 ...
Mario Favre, H Chuaqui, E Wyndham
exaly   +1 more source

Application of a microwave cathode to a 200-W Hall thruster with comparison to a hollow cathode

, 2020
A hollow cathode is an efficient electron source in the self-heating mode utilizing the discharge power. However, in sub-ampere currents, it needs keeper power to maintain the thermionic electron discharge, which could decrease the thrust efficiency.
T. Morishita, R. Tsukizaki, N. Yamamoto, K. Kinefuchi, K. Nishiyama   +4 more
semanticscholar   +1 more source

Amorphous MoS3 Anchored within Hollow Carbon as a Cathode Material for Magnesium-Ion Batteries.

ACS Nano
Magnesium-ion batteries are considered the next-generation promising large-scale energy storage devices owing to the low-cost and nondendritic features of metallic Mg anode.
Yan Liu, Ao Xu, Jiahui Wang, Fuyi Jiang, Huan Pang, Jian Yang, Yan-Li Zhou   +6 more
semanticscholar   +1 more source

Hollow Layered Iron-Based Prussian Blue Cathode with Reduced Defects for High-Performance Sodium-Ion Batteries.

ACS Applied Materials and Interfaces
Fe-based Prussian blue (Fe-PB) analogues have emerged as promising cathode materials for sodium-ion batteries, owing to their cost-effectiveness, high theoretical capacity, and environmental friendliness.
Cheng-Cheng Wang, Lu-Lu Zhang, Xin‐Yuan Fu, Hua-Bin Sun, Xue-Lin Yang   +4 more
semanticscholar   +1 more source

Hollow Cathode Discharge with Thermionic Cathodes

Journal of Applied Physics, 1971
The electrical and visual characteristics of a dc hollow cathode discharge with indirectly heated thermionic cathodes were obtained in argon at a few Torr. Two facing planar cathodes of variable separation form the hollow cathode geometry. A hollow cathode effect was observed in the ``ball-of-fire'' mode and in the ``low-voltage arc'' mode. The results
openaire   +1 more source

Co3O4 thin films prepared by hollow cathode discharge

Surface & Coatings Technology, 2019
Semiconducting crystalline Co3O4 thin films were deposited on glass, stainless steel and Si substrates using three different PVD methods: (i) RF magnetron sputtering, (ii) high-power impulse magnetron sputtering (HiPIMS), and (iii) hollow cathode ...
J. Olejníček, J. Šmíd, R. Perekrestov, P. Kšírová, J. Rathouský, M. Kohout, M. Dvořáková, Š. Kment, K. Jurek, M. Čada, Z. Hubička   +10 more
semanticscholar   +1 more source