Y对铝空气电池阳极电化学活性及自腐蚀的影响  

Effect of Y on electrochemical activity and self corrosion behavior of aluminum air battery anode

作　　者：张旭昀[1,2] 宋泽民 孙振旭 李永存 王勇 ZHANG Xuyun;SONG Zemin;SUN Zhenxu;LI Yongcun;WANG Yong(School of Mechanical Science and Engineering,Northeast Petroleum University,Daqing 163318,China;Heilongjiang Key Laboratory of Petroleum and Petrochemical Multiphase Treatment and Pollution Prevention,Daqing 163318,China;Engineering and Technology Research Institute,CNPC Greatwall Drilling Company,Panjin 124010,China)

机构地区：[1]东北石油大学机械科学与工程学院,黑龙江大庆163318 [2]黑龙江省石油石化多相介质处理及污染防治重点实验室,黑龙江大庆163318 [3]中国石油集团长城钻探工程有限公司工程技术研究院,辽宁盘锦124010

出　　处：《兵器材料科学与工程》2021年第6期10-15,共6页Ordnance Material Science and Engineering

基　　金：国家自然科学基金(51974091);黑龙江省自然科学基金(LH2019E021)。

摘　　要：用中频感应熔炼炉制备Al-0.5Mg-0.1Sn-0.1Ga-xY(x=0、0.05、0.10、0.30、0.50)(质量分数,下同)铝空气电池用阳极五元合金。用金相分析、电化学测试、电池放电测试及表面形貌分析研究在4 mol/LNaOH溶液中稀土元素Y对铝空气电池阳极电化学性能和放电性能的影响规律。结果表明:当Y的质量分数为0.1%时,合金晶粒尺寸最小,第二相颗粒均匀分布。Y的加入降低析氢反应速率,合金有最佳的电化学性能和最低的自腐蚀速率,均匀化腐蚀明显。Y在提高阳极活性同时,可有效提升阳极的能量密度,当放电密度为0.02 A/cm;时,阳极能量密度高达2 777.778 mA·h/g。Al-0.5Mg-0.1Sn-0.1Ga-xY(x=0,0.05,0.10,0.30,0.50)anode five-element alloy for aluminum air battery was prepared by medium frequency induction melting furnace. Metallographic analysis,electrochemical test,battery discharge test and surface morphology analysis were used to study the effect of the addition of rare earth element Y on the electrochemical performance and discharge performance of aluminum air battery anode in 4 mol/L NaOH solution. The results show that when the Y content is 0.1%,the grain size of the alloy is the smallest,and the second phase particles are evenly distributed. The addition of Y decreases the reaction rate of hydrogen evolution,the alloy has the best electrochemical properties and the lowest self-corrosion rate,and the homogenization corrosion is obvious. Y can improve the anode activity and energy density effectively.When the discharge density is 0.02 A/cm;,the energy density of anode is up to 2 777.778 mA·h/g.

关 键 词：铝空气电池 铝阳极 稀土元素Y 自腐蚀 放电性能 

分 类 号：TM911.41[电气工程—电力电子与电力传动]