tailieunhanh - Study the Influences of Electrolyte Solution on the Electrochemical and Magnetic Properties of LaNi4.6Ge0.4 Alloys

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