Loading...
Please wait, while we are loading the content...
Similar Documents
Electrochemical impregnation of nickel hydroxide in porous electrodes
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Jorne, Jacob Ho, Kuo-Chuan |
| Copyright Year | 1987 |
| Description | The electrochemical impregnation of nickel hydroxide in porous electrode was investigated both experimentally and theoretically. The loading level and plaque expansion were the most important parameters to be considered. The effects of applied current density, stirring, ratio of solution to electrode volume and pH were identified. A novel flow through electrochemical impregnation is proposed in which the electrolyte is forced through the porous nickel plaque. The thickening of the plaque can be reduced while maintaining high loading capacity. A mathematical model is presented which describes the transport of the nitrate, nickel and hydroxyl ions and the consecutive heterogeneous electrochemical reduction of nitrate and the homogeneous precipitation reaction of nickel hydroxide. The distributions of precipitation rate and active material within the porous electrode are obtained. A semiempirical model is also proposed which takes into account the plugging of the pores. |
| File Size | 839571 |
| Page Count | 20 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19870020510 |
| Archival Resource Key | ark:/13960/t0tr0ss8h |
| Language | English |
| Publisher Date | 1987-09-01 |
| Access Restriction | Open |
| Subject Keyword | Inorganic And Physical Chemistry Hydroxides Porous Materials Nitrates Ion Exchange Membrane Electrolytes Electrode Materials Precipitation Chemistry Impregnating Electrochemistry Mathematical Models Nickel Oxidation-reduction Reactions Current Density Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
