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KANS GN
Accumulator mass designed for the production of negative electrodes for low maintenance Ni-Cd accumulators.
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Application :
Active filler for negative electrodes of the pocket type alkali Ni-Cd accumulators with increased requirements for reduced electrolyte consumption.
Composition :
The fundamental components are :
- Cadmium hydroxide - Cd(OH)2
- Cadmium oxide - CdO
- Filamentary nickel powder
- Stabilisers, activating and granulation additions
Properties :
- good tablet presability
- good bulk properties making it possible to charge the accumulator mass directly into the band
- high stability during long term cycles (charging/discharging)
- reduced electrolyte wastage during overcharging
Method of use in the production of electrodes :
Ready to be pressed into tablets (briquettes) and, at the same time, to be directly charged into the shaped perforated band.
Electrochemical efficiency up to cycle 5 :
min. 270 mAh.g-1
Guaranteed parameters :
| Quality feature | Dimension | Value | |||
|---|---|---|---|---|---|
| a) Chemical feature | |||||
| Cadmium content (Cd) | % | min. 68.0 | |||
| Nickel content (Ni) | % | min. 4.0 | |||
| Graphite content (C) | % | max. 0.10 | |||
| Iron content (Fe) | % | max. 0.07 | |||
| Humidity | % | 1.0 - 4.5 | |||
| b) Physical features | |||||
| 0.50 mm sieve residue | % | min. 20 | |||
| Bulk density | g.cm-3 | 0.90 - 1.50 | |||
More detailed data, the method of determining the contents of the individual substances, maesuring the electrochemical efficiency, etc., are stated in PND 50-184-94/2004 company standard.
