On the basis of Pb-Ca-Sn-Al alloy, we try to add the fifth alloy element, test their electrochemical performances and discuss theoretically the cause which improves their performance.

• 在Pb-Ca-Sn-Al合金的基础上尝试添加第五种合金元素，测试其电化学性能，并在理论上讨论了其性能提高的原因。