Understanding the impact of calcination time of high-voltage spinel Li1+Ni0.5Mn1.5O4 on structure and electrochemical behavior

2019 ◽  
Vol 325 ◽  
pp. 134901 ◽  
Author(s):  
Johannes Betz ◽  
Laura Nowak ◽  
Jan-Paul Brinkmann ◽  
Peer Bärmann ◽  
Marcel Diehl ◽  
...  
Keyword(s):  
High Voltage ◽  
Electrochemical Behavior ◽  
Calcination Time ◽  
The Impact

scholarly journals Aqueous phenol and ethylene glycol solutions in electrohydrodynamic liquid bridging

2011 ◽  
Vol 9 (3) ◽  
pp. 391-403 ◽  
Author(s):  
Mathias Eisenhut ◽  
Xinghua Guo ◽  
Astrid Paulitsch-Fuchs ◽  
Elmar Fuchs
Keyword(s):  
Mass Transport ◽  
Ethylene Glycol ◽  
Bisphenol A ◽  
Anodic Oxidation ◽  
High Voltage ◽  
Electrochemical Behavior ◽  
Pure Water ◽  
Passivation Layer ◽  
Mass Transfers ◽  
Electrophoretic Transport

AbstractThe formation of aqueous bridges containing phenol and ethylene glycol as well as bisphenol-A, hydrochinone and p-cresol under the application of high voltage DC (“liquid bridges”) is reported. Detailed studies were made for phenol and glycol with concentrations from 0.005 to 0.531 mol L−1. Conductivity as well as substance and mass transfers through these aqueous bridges are discussed and compared with pure water bridges. Previously suggested bidirectional mass transport is confirmed for the substances tested. Anodic oxidation happens more efficiently when phenol or glycol are transported from the cathode to the anode since in this case the formation of a passivation layer or electrode poisoning are retarded by the electrohydrodynamic (EHD) flow. The conductivity in the cathode beaker decreases in all experiments due to electrophoretic transport of naturally dissolved carbonate and bicarbonate to the anode. The observed electrochemical behavior is shortly discussed and compared to known mechanisms.

scholarly journals Assessment of the Visual Impact of Existing High-Voltage Lines in Urban Areas

Electricity ◽  
2021 ◽  
Vol 2 (3) ◽  
pp. 285-299
Author(s):  
Andreas Sumper ◽  
Oriol Boix-Aragones ◽  
Joan Rull-Duran ◽  
Joan Amat-Algaba ◽  
Joachim Wagner
Keyword(s):  
High Voltage ◽  
Urban Areas ◽  
Photographic Images ◽  
Sensibility Analysis ◽  
Visual Impact ◽  
The Impact

This article proposes a novel methodology to evaluate the visual impact of high-voltage lines in urban areas based on photographic images. The use of photographs allows for calculating the overall aesthetic impact while eliminating the subjective factors of the observer. To apply the proposed methodology based on photographs, the impact of the position and angle where the photograph was taken was analyzed, and a sensibility analysis was carried out. Moreover, it was applied to an application case, and a comparison with results from a previous study of a visual impact was performed. The methodology shows good performance and a better resolution of the indicator.

Determination of Dipole Spacing in Electrical Landfill Leakage Detection

2010 ◽  
Vol 171-172 ◽  
pp. 171-174
Author(s):  
Hong Cheng ◽  
Peng Kun Liu ◽  
Yu Ling Wang ◽  
Chang Xin Nai
Keyword(s):  
High Voltage ◽  
Direct Current ◽  
Current Method ◽  
Leakage Detection ◽  
High Voltage Direct Current ◽  
The Impact

The dipole spacing can directly affects the detecting sensitivity and accuracy in the landfill leakage detection by the high voltage direct current method. Based on the high voltage DC detecting model, the impact of dipole spacing on locating leaks is analyzed taking a single leak and multiple leaks as example. The results show that the greater the dipole spacing is, the higher the detecting sensitivity is; the smaller the dipole spacing is, the higher the detecting accuracy is. For multiple leaks, only one leak can be located when the dipole spacing is greater than the distance between the two leaks. In order to detect all leaks correctly, the dipole spacing should be smaller than the distance between the two leaks.

Electrochemical Behavior of High-Voltage LiNi0.5Mn1.5O4-xFx Electrodes at Elevated Storage Temperature

2008 ◽  
Vol 24 (01) ◽  
pp. 165-170
Author(s):  
DU Guo-Dong ◽  
◽  
◽  
NULI Yan-Na ◽  
FENG Zhen-Zhen ◽  
...  
Keyword(s):  
High Voltage ◽  
Electrochemical Behavior ◽  
Storage Temperature

Low-Density Fan-Out Heterogeneous Integration of MEMS Tunable Capacitor and RF SOI Switch

2019 ◽  
Vol 2019 (1) ◽  
pp. 000051-000055
Author(s):  
Rameen Hadizadeh ◽  
Anssi Laitinen ◽  
Niko Kuusniemi ◽  
Volker Blaschke ◽  
David Molinero ◽  
...  
Keyword(s):  
High Voltage ◽  
Microelectromechanical Systems ◽  
Performance Metrics ◽  
Circuit Board ◽  
Low Density ◽  
Rf Switch ◽  
Tunable Capacitor ◽  
Esd Protection ◽  
Mems Device ◽  
The Impact

Abstract Using Low-Density Fan-Out (LDFO) packaging technology, a radio frequency (RF) microelectromechanical systems (MEMS) tunable capacitor array composed of electrostatically actuated beams on 180nm high-voltage CMOS silicon was heterogeneously integrated with a single-pole four-terminal (SP4T) RF switch on 180nm CMOS silicon-on-insulator (SOI). The primary objective of this study was to determine the manufacturability of this System-in-Package (SiP) design, which is proven at time zero through survival of the MEMS device based on acceptable MEMS performance metrics. In addition, the RF SOI switch provides high-voltage electrostatic discharge (ESD) protection for the MEMS device. Capacitive MEMS structures are particularly sensitive to unpredictable electrostatic charging scenarios, such as handling after package assembly and printed circuit board (PCB) surface mount processing. Consequently, resistance to dielectric breakdown by means of robust ESD protection is a very desirable quality. Integrating the RF switch in close proximity with the MEMS device not only enables the ability to withstand charging scenarios in excess of 1kV (human body model), it mitigates the impact of parasitics on RF performance by minimizing interconnect lengths and complexity.

ITER NB Injector Test Facility: Analyses of the Impact on the High Voltage Network

2007 ◽  
Vol 52 (3) ◽  
pp. 403-407
Author(s):  
R. Piovan ◽  
L. Novello ◽  
A. De Lorenzi ◽  
E. Gaio ◽  
F. Milani
Keyword(s):  
High Voltage ◽  
Test Facility ◽  
The Impact

Investigation of Bipolar Degradation of 1.2 kV BJTs under Different Current and Temperature Conditions

2020 ◽  
Vol 1004 ◽  
pp. 464-471
Author(s):  
Sarah Rugen ◽  
Siddarth Sundaresan ◽  
Ranbir Singh ◽  
Nando Kaminski
Keyword(s):  
Silicon Carbide ◽  
High Voltage ◽  
Current Density ◽  
High Power ◽  
Stacking Faults ◽  
Bipolar Junction Transistors ◽  
Mode Operation ◽  
Different Temperatures ◽  
Current Densities ◽  
The Impact

Bipolar silicon carbide devices are attractive for high power applications offering high voltage devices with low on-state voltages due to plasma flooding. Unfortunately, these devices suffer from bipolar degradation, which causes a significant degradation of the on-state voltage. To explore the generation of stacking faults, which cause the degradation, the impact of the current density and temperature on bipolar degradation is investigated in this work. The analysis is done by stressing the base-collector diode of 1.2 kV bipolar junction transistors (BJTs) as well as the BJTs in common-emitter mode operation with different current densities at different temperatures.

Electrostrictive energy conversion property of cellular electrets after corona discharge

2018 ◽  
Vol 32 (07) ◽  
pp. 1850069 ◽  
Author(s):  
J. W. Zhang ◽  
F. K. Gao ◽  
H. C. Sun ◽  
C. Putson ◽  
R. T. Liu
Keyword(s):  
Energy Conversion ◽  
Corona Discharge ◽  
High Voltage ◽  
Before And After ◽  
Electric Dipoles ◽  
Corona Poling ◽  
The Impact ◽  
Cellular Polymer ◽  
Electrostrictive Effect

In this paper, the authors present the electrostrictive energy conversion ability of cellular electrets after the high-voltage corona polarization. Moreover, the electrostrictive effect of such foamed polymer before and after corona polarization has also been compared and discussed. The enhancement of electrostrictive effect of cellular electrets after corona polarization was observed. In particular, the impact on the electrostrictive effect of the macroscopic electric dipoles inside of cellular polymer which are generated by high-voltage corona poling procedure has been investigated. The present research has promoted the development of the application of electret in the field of energy conversion, actuator, transducers, etc.

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