Electrochemical Studies on the Ca-Based Hydrogen Storage Alloy for Different Milling Times

Y. Dabaki; C. Khaldi; N. Fenineche; O. ElKedim; M. Tliha; J. Lamloumi

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자료유형: 학술저널

저자정보: Y. Dabaki (ENSIT) C. Khaldi (ENSIT) N. Fenineche (UTBM) O. ElKedim (UTBM) M. Tliha (ENSIT) J. Lamloumi (ENSIT)

저널정보: 대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.27 No.5

발행연도: 2021.1

수록면: 1,005 - 1,024 (20page)

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The CaNi4.8Mn0.2powder was synthesized by mechanical alloying, under an atmosphere of argon at room temperature,at different milling times (2, 10, 20, 30, 40, 50 and 60 h) with ball to powder weight ratio of 8:1. The structural and morphologicalcharacterizations of the CaNi4.8Mn0.2powder were carried, respectively, by scanning electron microscopy andX-ray diffraction. After 2 h, all the alloys had a biphasic structure, two major phases, Ni and Ca2Ni7,remained virtuallyunchanged when a small amount of Mn was added. After more than 40 h of milling, the same peaks of the Ni and Ca2Ni7phases appeared, while the intensity of the peaks decreased, indicating an additional amorphization process. After 50 h ofmilling, this damping was followed by the crystallization amorphization. The electrochemical properties of CaNi4.8Mn0.2electrodes were studied at different milling times (10, 20, 30, 40, 50 and 60 h) and in KOH electrolyte concentrations (1 Mand 6 M) at ambient temperature, as anodes in the Ni–MH battery. Different techniques were used, such as galvanostaticpolarization, potentiostatic polarization and potentiodynamic polarization.

#CaNi5 based alloys · Mechanical alloying · Structural and morphological techniques · Ni–MH batteries · Electrochemical techniques

참고문헌 (77)

참고문헌 신청

D. Linden / 2001 / Handbook of Batteries / McGrawHill

M. A. Fetcenko / 2007 / J. Power Sources 165:544~551

C. Pillot / The Rechargeable Battery Market and Main Trends (2014–2025)

I. Saldan / 2010 / J. Solid State Electrochem 14:1339~1350

C. Khaldi / 2004 / Int. J. Hydrogen Energy 29:307~311

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