Results 91 to 100 of about 261,100 (291)
Advanced Science, EarlyView.Selective CO formation in bicarbonate electrolysis is achieved by retaining reactive CO2 and tuning pH, while the competing hydrogen evolution reaction occurs at the interface. The rate‐determining step couples the chemical equilibrium of bicarbonate/CO2 with electrochemical charge transfer, offering insight into optimizing reaction conditions for ...
Lin Li +7 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 +5 more
doaj +1 more source
Advances and Perspectives in Graphene‐Based Quantum Dots Enabled Neuromorphic Devices
Advanced Science, EarlyView.Graphene‐based QDs are zero‐dimensional carbon nanomaterials with pronounced quantum confinement and tunable electronic structures. Herein, we summarize their synthesis strategies and functionalization methods, and highlight their functional roles and operating mechanisms in devices, as well as recent advances in neuromorphic electronics. We anticipate
Yulin Zhen +9 more
wiley +1 more source
, 2007 This paper presents the Phase A study of the Solar Electric Propulsion subsystem selected for the ESA European Student Moon Orbiter enhanced microsatellite, performed at QinetiQ under ESA funding.
Wallace, Neil +3 more
core +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
Emitter depletion measurement and modeling in the T5&T6 Kaufman-type ion thrusters
, 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
An Investigation into Electrolytes and Cathodes for Room-Temperature Sodium–Sulfur Batteries
BatteriesIn the pursuit of high energy density batteries beyond lithium, room-temperature (RT) sodium–sulfur (Na-S) batteries are studied, combining sulfur, as a high energy density active cathode material and a sodium anode considered to offer high energy ...
Hakeem Ademola Adeoye +3 more
doaj +1 more source
Nanomaterials, 2018 As a step towards efficient and cost-effective electrocatalytic cathodes for Li–O2 batteries, highly porous hausmannite-type Mn3O4 hollow nanocages (MOHNs) of a large diameter of ~250 nm and a high surface area of 90.65 m2·g−1 were ...
Amrita Chatterjee +2 more
doaj +1 more source
Hollow cathode apparatus [PDF]
, 1984 A hollow cathode apparatus is described, which can be rapidly and reliably started. An ignitor positioned upstream from the hollow cathode, generates a puff of plasma that flows with the primary gas to be ionized through the cathode.
Aston, G.
core
Controllable Preparation of V2O5 Hollow Microspheres as Cathode Materials for Lithium-Ion Batteries
International 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