Hydrostatic Horizontal Cell

2012 ◽  
Vol 572 ◽  
pp. 382-389
Author(s):  
Qi Weng
Keyword(s):  
High Current Density ◽  
Horizontal Cell ◽  
Horizontal Cells ◽  
Low Power Consumption ◽  
Stable Operation ◽  
High Current ◽  
Backup Roll ◽  
Coating Quality ◽  
New Type ◽  
Lower Frame

A new type of cell (Hydrostatic horizontal cell (HHC)) developed for continuous electroplating of strip is described. The cell consists of upper frame, lower frame, upper anode, lower anode, liquid baffle, conductive roll, backup roll, edge mask and its control system etc. The upper and lower hydrostatic cavities are located at the middle of the cell. The HHC adopts an innovative operating principle to generate strong capability of using hydrostatic pressure to grip the strip and to correct the strip twist. It thereby remarkably decreases the running space height and the deviation-from-center error of the strip in the cell. It originally builds up the horizontal spray of electrolyte to both directions at the center of the cell. Consequently the gas exhausting ability of the cell and the electroplating efficiency are improved. The cell has improved overall technical performances over conventional horizontal cells, and it is capable to effectively prevent short circuiting between the strip and the anodes. In general, the advantages of HHC include stable operation, excellent coating quality, high current density, low power consumption, and simple as well as compact equipment.

Advanced CVD Diamond Microtip Devices for Extreme Applications

1998 ◽  
Vol 509 ◽  
Author(s):  
D.E. Patterson ◽  
K.D. Jamison ◽  
M.L. Kempel ◽  
S. Freeman
Keyword(s):  
High Current Density ◽  
Cvd Diamond ◽  
Harsh Environments ◽  
Stable Operation ◽  
High Current ◽  
High Radiation ◽  
Current Output ◽  
Cold Cathodes ◽  
Hot Filament ◽  
Electron Extraction

AbstractExtreme Devices has fabricated and tested gated CVD diamond microtip arrays for use as cold cathodes in a variety of high power, high temperature, and high radiation applications. The uses for these devices include direct replacement of hot filament cathodes, microwave amplifiers, spaceborne sensors, and other areas requiring devices that provide high current output and that will function in harsh environments. The basic architecture of the device including an overview of the method for obtaining the self-aligned gated diamond microtip array is presented. Key developments for these robust devices include low electron extraction fields (3 V/μm), high current density output (>75A/cm2), stable operation for long periods of time, and operation in severe (high pressure) conditions. The gated cathodes offer low turn-on voltages (22 V) and appear to be well suited to a number of applications.

Fabrication and Characterization of Electrodes for Microbial Fuel Cell

2012 ◽  
Vol 523-524 ◽  
pp. 1025-1028
Author(s):  
Hidetoshi Ogikubo ◽  
Naoto Ohtake
Keyword(s):  
Fuel Cell ◽  
Microbial Fuel Cell ◽  
High Current Density ◽  
High Current ◽  
Global Issue ◽  
New Type ◽  
Fabrication And Characterization ◽  
Ag Paste ◽  
Power Densities

Bio- Fuel Cell is promising technology to overcome global issue. However, there are many problems in Bio-fuel cell using organism catalyst because research of this type of fuel cell is started in only few years. Purpose of this research is to obtain high electric power using new type of electrode in Microbial Fuel Cell (MFC). Firstly, three types of electrodes were prepared. Those are (1) painted CNT (Carbon Nanotube) by Ag paste, (2) only Ag paste (without CNT) and (3) bare carbon thin plate. MFC with CNT painted (2) electrode generated high current density and high power in MFC, but its E.M.F (Electromotive Force) was decreased. When CNT painting was applied only to anode, high current and power densities were attained without reducing E.M.F.

Stable high current density operation of La0.6Sr0.4Co0.2Fe0.8O3−δ oxygen electrodes

2019 ◽  
Vol 7 (22) ◽  
pp. 13531-13539 ◽  
Author(s):  
Matthew Y. Lu ◽  
Justin G. Railsback ◽  
Hongqian Wang ◽  
Qinyuan Liu ◽  
Yvonne A. Chart ◽  
...  
Keyword(s):  
High Temperatures ◽  
Current Density ◽  
High Current Density ◽  
Solid Oxide ◽  
Stable Operation ◽  
Electrochemical Cells ◽  
High Current ◽  
Oxygen Electrodes ◽  
Current Densities

Stable operation of LSCF oxygen electrodes with high current densities at high temperatures for solid oxide electrochemical cells.

Galvanostatic dissolution of mercury from the surface of glassy carbon into thiocyanate solution

1980 ◽  
Vol 45 (1) ◽  
pp. 169-178 ◽  
Author(s):  
František Opekar ◽  
Karel Holub
Keyword(s):  
Glassy Carbon ◽  
Electrode Surface ◽  
High Current Density ◽  
High Current ◽  
Nernst Equation ◽  
Potential Oscillations ◽  
Thiocyanate Solution ◽  
Theoretical Assumptions ◽  
Solution Proceeds ◽  
Dissolution Current

The galvanostatic dissolution of mercury from the surface of glassy carbon into a thiocyanate solution proceeds in accord with theoretical assumptions, as manifested by the constant product of the dissolution current and transition time. Under certain relations between the amount of oxidised mercury and concentration of thiocyanate at the electrode surface, however, a small part of the mercury dissolves at more positive potentials than correspond to the Nernst equation. This dissolution can be accompanied by potential oscillations. The anomalous behaviour is elucidated by the concept about coverage of a certain part of mercury with a film of sparingly soluble compounds of SCN- ions with mercury. This film is formed at the end of the galvanostatic dissolution on certain places of the electrode surface covered with mercury droplets, where SCN- ions are much exhausted as a result of a high current density.

Three-dimensional porous copper-decorated bismuth-based nanofoam for boosting electrochemical reduction of CO2 to formate

2021 ◽  
Author(s):  
Yingchun Zhang ◽  
Changsheng Cao ◽  
Xintao Wu ◽  
Qi-Long Zhu
Keyword(s):  
Current Density ◽  
High Current Density ◽  
Three Dimensional ◽  
Co2 Reduction ◽  
Reduction Reaction ◽  
High Current ◽  
Porous Copper ◽  
Reduction Of Co2 ◽  
Co2 Reduction Reaction ◽  
Wide Potential

Bismuth (Bi)-based nanomaterials are considered as the promising electrocatalysts for electrocatalytic CO2 reduction reaction (CO2RR), but it is challenging to achieve high current density and selectivity in a wide potential...

Cu-Doped Alloy Layer Guiding Uniform Li Deposition on a Li–LLZO Interface under High Current Density

2021 ◽  
Author(s):  
Xia He ◽  
Fei Yan ◽  
Mingyuan Gao ◽  
Yunjing Shi ◽  
Guanglong Ge ◽  
...  
Keyword(s):  
Current Density ◽  
High Current Density ◽  
Alloy Layer ◽  
High Current
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