新能源车用电池负极材料的开发与性能  

Study on the Development and Performance of Anode Materials for New Energy Vehicle Batterys

作　　者：周娟英[1] 赵建有[2] 王露峰 吴夏 汪磊 ZHOU Juanying;ZHAO Jianyou;WANG Lufeng;WU Xia;WANG Lei(School of Automotive Engineering and Navigation Services,Shanxi Vocational and Technical College,Xi’an 710038,China;College of Automotive,Chang’an University,Xi’an 710064,China;School of Automobile,Shanxi Vocational College of Transportation,Xi’an 710018,China;Chemistry and Chemical Engineering College,Anqing Normal University,Anqing 246133,Anhui,China;School of Automobile and Rail Transit,Tianjin Zhongde University of Applied Technology,Tianjin 300350,China)

机构地区：[1]陕西职业技术学院汽车工程与通航服务学院,西安710038 [2]长安大学汽车学院,西安710064 [3]陕西交通职业技术学院汽车学院,西安710018 [4]安庆师范大学化学化工学院,安徽安庆246133 [5]天津中德应用技术大学汽车与轨道交通学院,天津300350

出　　处：《实验室研究与探索》2020年第7期48-52,共5页Research and Exploration In Laboratory

基　　金：天津市企业科技特派员项目(18JCTPJC53500)。

摘　　要：采用X射线衍射分析仪、电子探针和动力学测试系统研究了Ce和Mg对电池负极材料用Y-Fe基储氢合金中Y的替代作用。结果表明,当合金元素化学计量比x=0~0.25时,Y1-xCexFe3合金主要为YFe3、Y6 Fe23和YFe2相,且x=0、0.15、0.25和0.5时储氢合金中的主相分别为YFe3、Y6 Fe23、Y6 Fe23和YFe2相。当x=0.15~0.5时,储氢合金的第1和第2次吸氢容量都会随着Ce替代率增加而逐渐降低;Y1-xCexFe3合金中Ce替代部分Y可以起到改善储氢合金吸氢性能的作用,适宜的Ce替代率为x=0.15。Mg替代x=0.05~0.15的Y后,储氢合金中YFe3和YFe2相含量明显减少,而Y6 Fe23相含量明显增加,Mg元素替代有助于促进储氢合金中Y6 Fe23相的形成,并未改善储氢合金的吸氢平台特性。The substitution of Ce and Mg for Y in Y-Fe based hydrogen storage alloy was studied by means of X-ray diffraction,electron probe microanalysis and kinetic measurement system.The results show that when x=0~0.25,the main phases of Y1-xCexFe3 alloy are YFe3,Y6 Fe23 and YFe2,and when x=0,0.15,0.25 and 0.5,the main phases of the hydrogen storage alloy are YFe3,Y6 Fe23,Y6 Fe23 and YFe2,respectively.When x=0.15~0.5,the first and second hydrogen absorption capacities of the hydrogen storage alloys will gradually decrease with the increase of Ce substitution rate;the substitution part of Ce in Y1-xCexFe3 alloy,can improve the hydrogen absorption performance of the hydrogen storage alloy,and the appropriate Ce substitution rate is x=0.15.When Mg is substituted for Y as x=0.05~0.15,the contents of YFe3 and YFe2 in the hydrogen storage alloys are obviously reduced,while the content of Y6 Fe23 is obviously increased.The substitution of Mg helps to promote the formation of Y6 Fe23 in the hydrogen storage alloy,but does not improve the hydrogen absorption platform characteristics of the hydrogen storage alloy.

关 键 词：新能源车用电池 Y-Fe基储氢合金 物相 吸氢动力学性能 

分 类 号：TM912[电气工程—电力电子与电力传动] TG139.7[一般工业技术—材料科学与工程]