Abstract:The nickel-hydrogen (Ni-H2) cell is rapidly replacing nickel-cadmium (Ni-Cd) cell as the system of choice for aerospace applications where weight is crucial. The heavy-sintered nickel electrode used in this cell accounts for about 38% of the cell weight. The use of small diameter fiber nickel electrodes will reduce the weight and improve the specific energy of the state-of-the-art Ni-H2 cell by about 50%. One advantage of this small diameter nickel fiber material is the increase in the surface area available f… Show more
w average particle size; † r density; ‡ l BET surface area; d t crystallite size; ¶ s electrical resistivity of a powder compact pressed at 10 kPa cm−2. ** After ion etch up to depth of 6 nm.
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