NASA Technical Reports Server (NTRS) : Long pdf

NASA Technical Reports Server (NTRS) : Long

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In order to develop a long life nickel electrode for a Ni/H2 cell, cycle life tests of nickel electrodes were carried out in Hi/H2 boiler plate cells. A 19 test cell matrix was made of various nickel electrode designs including three levels each of plaque mechanical strength, median pore size of the plaque, and active material loading. Test cells were cycled to the end of their life (0.5v) in a 45-minute low earth orbit cycle regime at 80% depth-of-discharge. The results show that the active material loading level affects the cycle life the most with the optimum loading at 1.6 g/cc void. Mechanical strength did not affect the cycle life noticeably in the bend strength range of 400 to 700 psi. The best plaque type appears to be one which is made of INCO nickel powder type 287 and has a median pore size of 13 micron

• Creator/s: NASA Technical Reports Server (NTRS
• Date: 9/1/1984
• Year: 1984
• Book Topics/Themes: NASA Technical Reports Server (NTRS), ELECTRODES, NICKEL HYDROGEN BATTERIES, SERVICE LIFE, DESIGN ANALYSIS, ELECTRODEPOSITION, FABRICATION, LOW EARTH ORBITS, MECHANICAL PROPERTIES, METAL POWDER, PERFORMANCE TESTS, Lim, H. S., Verzwyvelt, S. A

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