Effect of Fe and Cu on Electrochemical Characteristics of Low-Co AB5 Type Alloys
来源期刊：JOURNAL OF RARE EARTHS2004年增刊第1期
论文作者：ZHU Xilin Li Xiaochun Chong Fayao Zhou Yu Pan Weilin
Key words：Cu and Fe; low-Co; AB5 type hydrogen storage alloy; electrochemical capacity; cycle life;
Abstract: In order to further reduce the cost of AB5 type rare earth-based hydrogen storage alloy, a low-Co AB5 type hydrogen storage alloy were by substituting Co with Cu and Fe.The characteristics of these alloys have been investigated by means of XRD, PCT, and measurement of electrochemical capacity and cycle life.The test results show that the effect of these two kinds of substituting elements on discharge capacity is Cu ＞ Fe, and the cycle life is on the contrary.Both of them have no distinct influence on activity speed, but activity speed increases with the decrease of Co.By the order way, the high discharge rate characteristics rise with the addition of Cu and decreasing of Co.
ZHU Xilin1，Li Xiaochun1，Chong Fayao1，Zhou Yu1，Pan Weilin1
(1.Inner Mongolia Rare Earth Ovonic Metal Hydride Co.,Ltd.,Baotou 014030, China)
Abstract:In order to further reduce the cost of AB5 type rare earth-based hydrogen storage alloy, a low-Co AB5 type hydrogen storage alloy were by substituting Co with Cu and Fe.The characteristics of these alloys have been investigated by means of XRD, PCT, and measurement of electrochemical capacity and cycle life.The test results show that the effect of these two kinds of substituting elements on discharge capacity is Cu ＞ Fe, and the cycle life is on the contrary.Both of them have no distinct influence on activity speed, but activity speed increases with the decrease of Co.By the order way, the high discharge rate characteristics rise with the addition of Cu and decreasing of Co.
Key words:Cu and Fe; low-Co; AB5 type hydrogen storage alloy; electrochemical capacity; cycle life;
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