Hydrogen Storage and Electrochemical Properties of Cast Vanadium Based Alloys for Automotive Batteries
-
摘要: 对汽车电池用铸造钒基V3TiNi0.56合金和V3TiNi0.56Y0.1Co0.1新型合金试样进行了铸造试验,并进行了储氢性能、电化学性能和显微组织的测试与分析。结果表明:与V3TiNi0.56合金相比,V3TiNi0.56Y0.1Co0.1新型合金的最大吸氢量从3.13%增大到3.88%,充放电循环20次后放电容量保有率从23%增大到91%,合金的枝晶臂细化、枝晶间距变小,合金的储氢性能和电化学性能得到明显提高。合金元素Y和Co的添加,有利于提高汽车电池用铸造钒基V3TiNi0.56合金的储氢性能和电化学循环稳定性能。
-
关键词:
- 汽车电池 /
- V3TiNi0.56Y0.1Co0.1钒基新型合金 /
- 储氢性能 /
- 电化学性能
Abstract: Casting tests for V3TiNi0.56 and V3TiNi0.56Y0.1Co0.1 alloys used in automobile batteries were carried out,and the hydrogen storage performance,electrochemical property and microstructure of the alloys were tested and analyzed.The results show that compared with V3TiNi0.56 alloy,the maximum hydrogen absorption capacity of V3TiNi0.56Y0.1Co0.1 alloy increases from 3.13% to 3.88%,and the retention rate of discharge capacity of V3TiNi0.56Y0.1Co0.1 alloy increases from 23% to 91% after 20 times of charge-discharge cycles.The dendritic arm of V3TiNi0.56Y0.1Co0.1 alloy is refined,and the interval for dendritic crystals of V3TiNi0.56Y0.1Co0.1 alloy is decreased,with the hydrogen storage and electrochemical properties of the alloy improved significantly.The addition of Y and Co as alloying elements can improve the hydrogen storage and electrochemical cycling stability of V3TiNi0.56 alloy applied to automobile batteries.
点击查看大图
计量
- 文章访问数: 17
- HTML全文浏览量: 2
- PDF下载量: 2
- 被引次数: 0