A study of the development of a high capacity and high performance Zr–Ti–Mn–V–Ni hydrogen storage alloy for Ni–MH rechargeable batteries
1998; Elsevier BV; Volume: 279; Issue: 2 Linguagem: Inglês
10.1016/s0925-8388(98)00508-8
ISSN1873-4669
AutoresDong‐Myung Kim, Seok-Won Jeon, Jai-Young Lee,
Tópico(s)Nuclear Materials and Properties
ResumoExtensive investigations have been carried out for developing a Zr-based Laves phase alloy with high capacity and high rate-capability for electrochemical application. In order to increase the discharge capacity of the ZrMn0.7V0.5Ni1.2 alloy, which is optimized in our previous work [11], Ti was partially substituted for Zr and the stoichiometry was also changed. This change also increases the rate-capability. After such careful alloy design reached by substitution and changing stoichiometry, Zr0.9Ti0.1(Mn0.7V0.5Ni1.4)0.92 alloys with high capacity and high rate-capability have been developed. This alloy has a discharge capacity of 392 mA h g−1 at 0.25 C discharge rate and shows high rate-capability equalling that of commercialized AB5 type alloys.
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