In this report, we studied the effect of electrolyte concentration on the electrochemical and magnetic properties of the alloys used as the negative electrode in Ni-MH rechargeable batteries. Effect of electrolyte concentration on the electrochemical and magnetic properties of the alloys was investigated by the measurements of magnetization curves and charge-discharge performance of the material. | VNU Journal of Science: Mathematics – Physics, Vol. 32, No. 4 (2016) 1-5 Study the Influences of Electrolyte Solution on the Electrochemical and Magnetic Properties of Alloys Dam Nhan Ba1,*, Luu Tuan Tai2 1 Department of Basic Science, Hung Yen University of Technology and Education, Hung Yen, Vietnam 2 Faculty of Physics, VNU University of Science, 334 Nguyen Trai, Hanoi, Vietnam Received 15 October 2016 Revised 16 November 2016; Accepted 28 December 2016 Abstract: In this report, we studied the effect of electrolyte concentration on the electrochemical and magnetic properties of the alloys used as the negative electrode in Ni-MH rechargeable batteries. Effect of electrolyte concentration on the electrochemical and magnetic properties of the alloys was investigated by the measurements of magnetization curves and charge-discharge performance of the material. The results showed that the composition electrolyte solution KOH() + LiOH(), the charge-discharge performance is the highest. With this concentration of magnetization curves show superparamagnetic status and the magnetized values is the highest. Keywords: Nano, Ni-MH batteries, LaNi5, magnetic properties, hydrogen absorption. 1. Introduction The compounds RT5 have been known and studied a lot because of the ability to absorb and disabsorb the very large amounts of hydrogen at atmospheric pressure and room temperature which does not damage the lattice structure [1, 2]. Hydrogen accumulation in the crystal lattice of the material creates a permanent-form hydrogen container and energy reserves [3]. This feature has been applied in many fields of science and technology, one of the applications that is built rechargeable battery cathode Ni-MH [4, 5]. The advantages of Ni-MH battery are high-capacity battery and its waste does not pollute the environment [6, 7]. On the other hand, compared with Ni-Cd or the lithium battery are familiar products in the electronics and
