| 新能源汽车电池用无镁储氢合金的制备与性能研究 |
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| 引用本文： | 程丽群,左付山.新能源汽车电池用无镁储氢合金的制备与性能研究[J].无机盐工业,2021,53(11):71-76. |
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| 作者姓名： | 程丽群 左付山 |
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| 作者单位： | 1.南京交通职业技术学院,江苏南京 2111882.南京林业大学 |
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| 基金项目： | 江苏省高校“青蓝工程”资助项目(苏教师2019-03);国家级职业教育教师教学创新团队课题(YB2020060104) |
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| 摘 要： | 采用真空电弧熔炼和925 ℃/12 h退火的方法制备了Y1-xLaxNi3.25Al0.15Mn0.15储氢合金（x=0~1）,研究了x值对储氢合金物相组成和电化学性能的影响。结果表明,x=0和0.15的储氢合金主要由LaNi5和Ce2Ni7相组成,x=0.25、0.33和0.5储氢合金主要由Ce5Co19和Ce2Ni7相组成,x=0.75和1储氢合金主要由PuNi3、LaNi5和Ce2Ni7相组成;相同充放电循环周次下,x=0.15~1储氢合金的放电容量和抗氢致非晶化能力都高于x=0储氢合金,且随着x从0增加至1,储氢合金的最大放电容量（Cmax）、容量保持率（S100）、氢扩散系数（D0）和高倍率放电性（HRD900）都呈现先增加后减小趋势,在x=0.33时取得Cmax、S100、D0和HRD900最大值。Y1-xLaxNi3.25Al0.15Mn0.15储氢合金的循环稳定性与合金电极的耐腐蚀性密切相关,高倍率放电性能取决于储氢合金的氢扩散速率。
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| 关 键 词： | 储氢合金 新能源汽车 电池 电化学性能 |
| 收稿时间： | 2021-01-22 |
Study on preparation and properties of magnesium free hydrogen storage alloys for new energy vehicle batteries |
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| CHENG Liqun,ZUO Fushan.Study on preparation and properties of magnesium free hydrogen storage alloys for new energy vehicle batteries[J].Inorganic Chemicals Industry,2021,53(11):71-76. |
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| Authors: | CHENG Liqun ZUO Fushan |
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| Affiliation: | 1. Nanjing Vocational Insititute of Transport Technology,Nanjing 211188,China2. Nanjing Forestry University |
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| Abstract: | Y1-xLaxNi3.25Al0.15Mn0.15 hydrogen storage alloy（x=0~1） was prepared by vacuum arc melting and annealing at 925 ℃ for 12 h.The effect of x value on the phase composition and electrochemical properties of hydrogen storage alloy was studied.The results showed that hydrogen storage alloys with x=0 and 0.15 were mainly composed of LaNi5 and Ce2Ni7 phases;hydrogen storage alloys with x=0.25,0.33 and 0.5 were mainly composed of Ce5Co19 and Ce2Ni7 phases;hydrogen storage alloys with x=0.75 and 1 were mainly composed of PuNi3,LaNi5 and Ce2Ni7 phases;under the same charge discharge cycle,the discharge capacity and anti hydrogen induced amorphization ability of hydrogen storage alloy with x=0.15~1 were higher than that of hydrogen storage alloy with x=0,and with the increase of x value from 0 to 1,Cmax,S100,D0 and HRD900 of hydrogen storage alloy increased at first and then decreased,and the maximum values of Cmax,S100,D0 and HRD900 were obtained at x=0.33.The cycle stability of Y1-xLaxNi3.25Al0.15Mn0.15 hydrogen storage alloy was closely related to the corrosion resistance of the alloy electrode, and the high rate discharge performance depended on the hydrogen diffusion rate of the hydrogen storage alloy. |
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| Keywords: | hydrogen storage alloy new energy vehicle battery electrochemical performance |
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