Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Development of Ti-Fe-X metal hydride electrode by mechanical alloying

기계적 합금화법에 의한 Ti-Fe-X계 수소 저장합금의 제조에 관한 연구

  • Ha, Chang-Jin (Dept. of Metallurgical Engineering, Hanyang University) ;
  • Lee, Gyeong-Seop (Dept. of Metallurgical Engineering, Hanyang University)
  • 하창진 (한양대학교 공과대학 금속공학과) ;
  • 이경섭 (한양대학교 공과대학 금속공학과)
  • Published : 1995.02.01
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Abstract

Metal hydride alloys of TiFe based system have been produced by mechanical alloying(MA) method and their electrochemical characteristics have been evaluated for application for Ni/MH battery electrode. These alloys became amorphous after 36hrs ball milling and easily activated electrochemically. All MA amorphous alloys reached at the first charge/discharge cycle the maximum capacity which was 2-3 times higher than the crystalline state. But their cyclic lives were much inferior to the crystalline state. Alloying elements such as Ni, Co, Cr, Mo substituting Fe greatly improved the capacity and 180 mAh/g capacity was obtained in an alloy of TiFe_{0.6}Ni_{0.1}Co_{0.1}Cr_{0.1}Mo_{0.1}$.

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