Results 71 to 80 of about 44,632 (309)

Hollow Cathode Discharges - Analytical Applications

Journal of Research of the National Bureau of Standards, 1984
The low pressure glow discharges considered in this paper are the hollow cathode (Paschen), and the flat cathode (Grimm). Both discharges have similar voltage-current characteristics which are responsible for their radiation stability. The analytical sample is supplied to the discharge through a sputtering mechanism which provides a stable and non ...
openaire   +2 more sources

Lithiophilic Current Collector Without Interfacial Penalty in Zero‐Excess Lithium Metal Batteries

Advanced Science, EarlyView.
Bilayer lithiophilic coatings are introduced to overcome the structural fragility of conventional single‐layer current collectors in zero‐excess Li‐metal batteries (ZE‐LMBs). By integrating density functional theory with electrochemical analyses, the Ag‐outer/Pt‐inner configuration enables uniform Li deposition, robust SEI formation, and persistent ...
Jiyeon Seo, Sangseob Lee, Seojin Jeon, Minhong Lim, Hyegang Koo, Seung‐Tae Hong, Woosun Jang, Aloysius Soon, Hongkyung Lee   +8 more
wiley   +1 more source

Dependence of pre-breakdown time on ionization processes in a pseudospark discharge

AIP Advances, 2017
The formation and development of pseudospark discharge, especially the onset of the breakdown, are of great technological interests in multiple applications due to their influences on the limits of current rising and fast switching ...
Xiaotong Cao, Jing Hu, Ruixue Zhang, Weijie Huo, Yulei Fu, Wansheng Zhao   +5 more
doaj   +1 more source

Uranium isotopes quantitatively determined by modified method of atomic absorption spectrophotometry [PDF]

, 1967
Hollow-cathode discharge tubes determine the quantities of uranium isotopes in a sample by using atomic absorption spectrophotometry. Dissociation of the uranium atoms allows a large number of ground state atoms to be produced, absorbing the incident ...
Lee, G. H.
core   +1 more source

Synergistic Ion Transport and Spatial Confinement in Sb‐Embedded Hollow Carbon Nanofibers for Stable Na Metal Anodes

Advanced Science, EarlyView.
This work presents a 3D Sb‐embedded hollow carbon nanofiber (Sb@HCF) host for ultra‐stable Na metal anodes. Experimental analyses and theoretical simulations clearly uncovers that in situ formed Na‐Sb alloy guides uniform Na deposition and serves as efficient ion transport highways. The Sb@HCF‐based cells achieve exceptional cycling stability in half‐,
Feng Han, Menghuan Yuan, Hui Wang, Baitao Liu, Dezhi Kong, Yongtao Tian, Xinjian Li, Ye Wang, Tingting Xu, Hui Ying Yang   +9 more
wiley   +1 more source

Analysis of anode temperature stability in hollow cathode vacuum arc brazing under multi-parameter coupling based on SR-MLP

Scientific Reports
During hollow cathode vacuum arc brazing, the anode temperature is prone to instability due to the interplay of multiple parameters, leading to fluctuations in joint temperature and potential localized melting of the base material. To address this issue,
Jinnan Lu, Zhitong Wang, Miao Xie, Runkun Yang   +3 more
doaj   +1 more source

Emission current control system for multiple hollow cathode devices [PDF]

, 1988
An emission current control system for balancing the individual emission currents from an array of hollow cathodes has current sensors for determining the current drawn by each cathode from a power supply.
Beattie, John R., Hancock, Donald J.
core   +1 more source

Collisional kinetics of non-uniform electric field, low-pressure, direct-current discharges in H$_{2}$

, 2010
A model of the collisional kinetics of energetic hydrogen atoms, molecules, and ions in pure H$_2$ discharges is used to predict H$_\alpha$ emission profiles and spatial distributions of emission from the cathode regions of low-pressure, weakly-ionized ...
A V Phelps, Babkina T, Barbeau C, Brehm B, Dexter A C, Donkó Z, Durup J, Eckstein W, Emmert G A, Fournier P, Francis G, Geddes J, Helm H, Hey J D, Hunter H T Kirkpatrick M I Alvarez I Cisneros C Phaneuf R A, Jelenković B M, Jelenković B M, Kirichenko V I, Kirichenko V I, Konjević N, Lavrov B P, Lavrov B P, Lavrov B P, Lavrov B P, Louriero J, Petrović Z Lj Phelps A V, Petrović Z Stojanović V Popović L C Dimitrijević M S, Phelps A V, Phelps A V, Prelec K, Rao M V V S Van Brunt R J Olthoff J K Rescigno p T N, Thomas E W, von Engle A, Ŝimko T Bretagne J Gousset G Bordage M C Gleizes A   +33 more
core   +1 more source

Fe2+‐ Induced Activation of Single and Dual Metal Site—Lattice Oxygen Mechanism in Fe Rich NiFe‐LDHs for Oxygen Evolution Reaction

Advanced Science, EarlyView.
Fe‐rich NiFe‐LDH catalysts derived from MOFs, showing superior OER activity via lattice oxygen mechanism activation. ABSTRACT Developing a durable and efficient oxygen evolution reaction (OER) catalyst without noble metals is essential for the economical and sustainable production of hydrogen by alkaline water electrolysis.
Nithinraj Panangattu Dharmarajan, Mohammed Fawaz, Vanshree Parey, Sudip Chakraborty, CI Sathish, Thi Thuy Kieu Tran, Xuan Minh Chau Ta, Siddulu Naidu Talapaneni, Zhixuan Li, Kavitha Ramadass, Antonio Tricoli, Jae‐Hun Yang, Ajayan Vinu   +12 more
wiley   +1 more source

S@NiS Hollow Spheres as Cathode Materials for LithiumSulfur Batteries

International Journal of Electrochemical Science, 2019
Severe capacity fading substantially hinders the employment of lithium-sulfur batteries in the electric vehicles. This is primarily due to the shuttle effect of the polysulfide in the electrolyte. Therefore, the most efficient method to improve the cycle
Bing Che, Dong Wang, Xiaochun Xu
doaj   +1 more source