scholarly journals Concentrated LiFSI–Ethylene Carbonate Electrolytes and Their Compatibility with High-Capacity and High-Voltage Electrodes

2022 ◽  
Author(s):  
Burak Aktekin ◽  
Guiomar Hernández ◽  
Reza Younesi ◽  
Daniel Brandell ◽  
Kristina Edström
Keyword(s):  
High Voltage ◽  
Ethylene Carbonate ◽  
High Capacity

scholarly journals Understanding the Outstanding High‐Voltage Performance of NCM523||Graphite Lithium Ion Cells after Elimination of Ethylene Carbonate Solvent from Conventional Electrolyte

2021 ◽  
pp. 2003738
Author(s):  
Sven Klein ◽  
Stefan van Wickeren ◽  
Stephan Röser ◽  
Peer Bärmann ◽  
Kristina Borzutzki ◽  
...  
Keyword(s):  
High Voltage ◽  
Ethylene Carbonate ◽  
Lithium Ion ◽  
Lithium Ion Cells ◽  
Voltage Performance

High‐Voltage and High‐Safety Practical Lithium Batteries with Ethylene Carbonate‐Free Electrolyte

2021 ◽  
pp. 2102299
Author(s):  
Yu Wu ◽  
Dongsheng Ren ◽  
Xiang Liu ◽  
Gui‐Liang Xu ◽  
Xuning Feng ◽  
...  
Keyword(s):  
High Voltage ◽  
Lithium Batteries ◽  
Ethylene Carbonate

Improved electrochemical performance of LiCoO2 electrodes for high-voltage operations by Ag thin film coating via magnetron sputtering

MRS Advances ◽  
2018 ◽  
Vol 3 (60) ◽  
pp. 3513-3518 ◽  
Author(s):  
Taner Zerrin ◽  
Mihri Ozkan ◽  
Cengiz S. Ozkan
Keyword(s):  
Thin Film ◽  
Magnetron Sputtering ◽  
Electrochemical Performance ◽  
High Voltage ◽  
Coulombic Efficiency ◽  
High Capacity ◽  
Interface Layer ◽  
Li Ion Batteries ◽  
Electrode Structure ◽  
Li Ion

ABSTRACTIncreasing the operation voltage of LiCoO2 (LCO) is a direct way to enhance the energy density of the Li-ion batteries. However, at high voltages, the cycling stability degrades very fast due to the irreversible changes in the electrode structure, and formation of an unstable solid electrolyte interface layer. In this work, Ag thin film was prepared on commercial LCO cathode by using magnetron sputtering technique. Ag coated electrode enabled an improved electrochemical performance with a better cycling capability. After 100 cycles, Ag coated LCO delivers a discharge capacity of 106.3 mAh g-1 within 3 - 4.5 V at C/5, which is increased by 45 % compared to that of the uncoated LCO. Coating the electrode surface with Ag thin film also delivered an improved Coulombic efficiency, which is believed to be an indication of suppressed parasitic reactions at the electrode interface. This work may lead to new methods on surface modifications of LCO and other cathode materials to achieve high-capacity Li-ion batteries for high-voltage operations.

Researches on Reactive Compensation for Long-Distance and Highcapacity Hybrid Submarine Cable Lines

2012 ◽  
Vol 433-440 ◽  
pp. 2406-2410
Author(s):  
Dong Mei Sun ◽  
Jun Wen
Keyword(s):  
High Voltage ◽  
Transmission Lines ◽  
Reactive Power ◽  
High Capacity ◽  
Reactive Power Compensation ◽  
Submarine Cable ◽  
Long Distance ◽  
Power Frequency ◽  
Electro Magnetic ◽  
Cable Lines

In order to balance reactive power, reduce line losses, prevent excessive power frequency and switching over-voltage and adjust and control the line voltage etc. The long-distance and high voltage transmission lines are needed reactive power compensation. High voltage overhead transmission lines and high voltage submarine cable (including mixed-submarine) transmission lines are different, for example, the capacitance in the submarine cable lines is larger than in the conventional overhead lines. Therefore, the reactive power compensation on the EHV transmission lines which contains submarine cable lines is focus on the compensation of submarine cable lines. The reactive power compensation in 500 kV AC submarine cable interconnection project for Hainan power grid and Guangdong power grid[1], which is the first 500 kV long-distance and high-capacity sea trails interconnection project in China and which is just completed soon, is researched by Electro-Magnetic Transient Program——PSCAD/EMTDC (Power System Computer Aided Design/ Electro Magnetic Transient in DC System in this paper). The simulation results verifies that the role of shunt reactor which could absorb charging power and suppress the power frequency overvoltage for the long-distance and high-capacity hybrid submarine cable lines. The conclusions can offer references to suppress power frequency overvoltage and the reactive power compensation in extra high voltage transmission lines which is the mixed mode of overhead transmission lines and submarine cables.

Sodium-based dual-ion batteries via coupling high-capacity selenium/graphene anode with high-voltage graphite cathode

2020 ◽  
Vol 31 (9) ◽  
pp. 2314-2318 ◽  
Author(s):  
Xiankun Hou ◽  
Wenhao Li ◽  
Yingying Wang ◽  
Shaofang Li ◽  
Yunfeng Meng ◽  
...  
Keyword(s):  
High Voltage ◽  
High Capacity ◽  
Graphite Cathode

A high-capacity high-voltage three-cycle oil circuit breaker

1945 ◽  
Vol 64 (4) ◽  
pp. 160-163
Author(s):  
H. L. Byrd ◽  
E. B. Rietz
Keyword(s):  
High Voltage ◽  
Circuit Breaker ◽  
High Capacity ◽  
Cycle Oil
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