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Electrode kinetics of a water vapor electrolysis cell
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Jacobs, G. |
| Copyright Year | 1974 |
| Description | The anodic electrochemical behavior of the water vapor electrolysis cell was investigated. A theoretical review of various aspects of cell overvoltage is presented with special emphasis on concentration overvoltage and activation overvoltage. Other sources of overvoltage are described. The experimental apparatus controlled and measured anode potential and cell current. Potentials between 1.10 and 2.60 V (vs NHE) and currents between 0.1 and 3000 mA were investigated. Different behavior was observed between the standard cell and the free electrolyte cell. The free electrolyte cell followed typical Tafel behavior (i.e. activation overvoltage) with Tafel slopes of about 0.15, and the exchange current densities of 10 to the minus 9th power A/sq cm, both in good agreement with literature values. The standard cell exhibitied this same Tafel behavior at lower current densities but deviated toward lower than expected current densities at higher potentials. This behavior and other results were examined to determine their origin. |
| File Size | 3338826 |
| Page Count | 157 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19740021301 |
| Archival Resource Key | ark:/13960/t7wm62764 |
| Language | English |
| Publisher Date | 1974-07-01 |
| Access Restriction | Open |
| Subject Keyword | Auxiliary Systems Electrodes Electric Potential Life Support Systems Electrolysis Water Vapor Overvoltage Electrochemical Cells Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
