Results 101 to 110 of about 873,347 (342)

Influence of the cathode material in the cathode fall characteristics of a hydrogen hollow cathode glow-discharge [PDF]

open access: yes, 2018
Producción CientíficaIn this work, we present Doppler free two photon optogalvanic measurements to determine the local electric field strength (E-field) in the cathode fall region of a hollow cathode discharge, operated in pure hydrogen, via the Stark ...
C. Pérez   +10 more
core   +1 more source

Coupling Fast Zn2+ Kinetics With V–O Framework Stabilization via Nitrogen‐Rich Interfacial Engineering of Spinel ZnV2O4

open access: yesAdvanced Science, EarlyView.
Graphitic carbon nitride acts as a nitrogen‐rich interfacial regulator for spinel ZnV2O4 cathodes in aqueous zinc‐ion batteries. Polar N sites promote interfacial Zn2+ adsorption, migration, and charge transfer, while mitigating local framework distortion and reinforcing V─O bonding.
Ashok Kumar Kakarla   +13 more
wiley   +1 more source

Controllable Preparation of V2O5 Hollow Microspheres as Cathode Materials for Lithium-Ion Batteries

open access: yesInternational Journal of Electrochemical Science, 2017
Hollow-structured vanadium oxides with tunable interiors have attracted significant attention in energy storage and conversion systems. In this work, we report the continuous structural engineering of VO2 solid microspheres utilizing a second ...
Xinxin An   +3 more
doaj   +1 more source

Population densities in a titanium hollow cathode [PDF]

open access: yes, 1981
Measurements are reported of population densities in the energy level systems of neutral and singly ionised titanium. The discharge under investigation was a high-current hollow cathode operated in argon or neon as a buffer gas.
Kock, M.   +3 more
core   +1 more source

Fabrication of Composite Cathode for All‐Solid‐State Sodium Batteries

open access: yesAdvanced Energy Materials, EarlyView.
The design of composite cathodes for all‐solid‐state sodium batteries must address three critical challenges—interfacial side reactions, interfacial delamination, and highly tortuous transport pathways. This work outlines structural and interfacial strategies to optimize ion transport and mechanical stability, enabling durable, and high‐performance ...
Gaoming Sun   +6 more
wiley   +1 more source

Emitter depletion measurement and modeling in the T5&T6 Kaufman-type ion thrusters

open access: yes, 2007
This paper presents some of the aspects of a program undertaken by Qineti Q to characterize and determine the depletion rates and predict life time of its cathode technology.
Ahmed Rudwan, Ismat M.   +3 more
core   +1 more source

Hollow Cathode Discharges - Analytical Applications

open access: yesJournal 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

From Materials to Systems: Challenges and Solutions for Fast‐Charge/Discharge Na‐Ion Batteries

open access: yesAdvanced Energy Materials, EarlyView.
This review systematically analyzes the key characteristics limiting the fast‐charge/discharge capability of Na‐ion batteries (SIBs) from a multi‐scale perspective encompassing electrode materials, the electrode‐electrolyte interface, and the system. Furthermore, it presents practical solution strategies for the fundamental issues arising at each scale,
Bonyoung Ku   +5 more
wiley   +1 more source

Deciphering Intricacies in Directional CO2 Conversion From Electrolysis to CO2 Batteries

open access: yesAdvanced Energy Materials, EarlyView.
This review will delve into the inherent connections and distinctions of CO2‐directed conversion in ECO2RR and CO2 batteries, in terms of product types, catalyst selection, catalytic mechanisms, and electrochemical performances, while proposing a benchmarking framework for the evaluation of CO2 batteries and innovative CO2 battery configurations for ...
Changfan Xu   +5 more
wiley   +1 more source

A 2D model for low-pressure hollow cathode arc discharges in argon

open access: yesJournal of Physics D: Applied Physics, 2018
A 2D fluid model is presented in this paper to study axisymmetric hollow cathode arc discharge, in which the equations of particle and particle energy transport, neutral gas flow and heating, and cathode thermal balance are included.
Shi-Yuan Cong   +4 more
semanticscholar   +1 more source

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