Optimization of additive compositions for anode in Ni-MH secondary battery using the response surface method
Abstract
We optimized the composition of additives for the anode in a Ni-MH battery using the response surface method (RSM) to improve the electrode discharge capacities. When the amount of additives was small, the discharge characteristics of the electrode were degraded by charge-discharge cycling due to the low binding strength among the alloy powders and the resultant separation of the powder from the electrode surface. In contrast, the addition of a large amount of the additives increased the electrical impedance of the electrode. Through a response optimization process, we found an optimum composition range of additives to exhibit the greatest discharge capacity of the electrode.
- Publication:
-
Metals and Materials International
- Pub Date:
- June 2009
- DOI:
- 10.1007/s12540-009-0421-0
- Bibcode:
- 2009MMI....15..421Y
- Keywords:
-
- Ni-MH battery;
- additive;
- discharge capacity;
- optimization;
- response surface method