Optimization of additive compositions for anode in Ni-MH secondary battery using the response surface method

• Published in: Metals and materials international Vol. 15; no. 3; pp. 421 - 425
• Main Authors: Yang, Dong-Cheol, Jang, In-Su, Jang, Min-Ho, Park, Choong-Nyeon, Park, Chan-Jin, Choi, Jeon
• Format: Journal Article
• Language: English
• Published: Springer The Korean Institute of Metals and Materials 01.06.2009; Springer Nature B.V; 대한금속·재료학회
• Subjects: Additives; Anodes; Battery; Binding; Characterization and Evaluation of Materials; Chemistry and Materials Science; Electrodes; Engineering Thermodynamics; Heat and Mass Transfer; Machines; Magnetic Materials; Magnetism; Manufacturing; Materials Science; Metallic Materials; Nickel; Optimization; Processes; Response surfaces; Solid Mechanics; 재료공학; response surface method; Ni-MH battery; discharge capacity; optimization; additive
• ISSN: 1598-9623; 2005-4149
• DOI: 10.1007/s12540-009-0421-0

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.