摘要
MH-Ni电池具有电化学比能量高、耐过充/放电性能好、无记忆效应和环境友好等优点而得到广泛应用.金属氢化物电极是MH-Ni电池的核心材料,其研究工作主要集中在稀土AB_5系、钛系、锆系和镁基等合金作为MH-Ni电池金属氢化物电极方面.但这些体系合金的电化学容量低。
The La1-xMgx(NiCoAl)3.5 system compounds, La0.9Mg0.1Ni3.1Co0.3Al0.2, La0.7Mg0.3Ni3.1· Co0.3Al0.2, La0.8Mg0.2Ni3.0Co0.4Al0.2 and La0.9Mg0.1Ni3.1Co0.2Al0.3 have been prepared by arc melting of constituent elements in Ar atmosphere. The electrochemical properties of these alloys have been studied through the charge-discharge recycle testing. The X-ray diffraction(XRD) analysis reveals that the as-prepared alloys have quite different crystal structures from that of AB5-type alloy. It can be found that La1-xMgx(NiCoAl)3.6 system alloys are capable of performing a high rate discharge. The as-prepared alloys have much higher middle voltage than those of AB5-type alloy during the discharge period.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2003年第9期1680-1682,共3页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:20171042)
