机械工程材料
AATERALS FOR MECHANICAL ENGINEERWG DOI;10,11973/jxgecl201711002
2017年11月第41卷第11期Vol,41No,11No%,2017
AZ31镁合金在AI(NO)3溶液中的电化学行为和
放电性能
夏邢燕"2，张娅"，孙颖迪'，周学华！3，陈秋荣13，张腾飞*
（1.中国科学院上海微系统与信息技术研究所，上海200050；2.中国科学院大学，北京100049；
3.中国科学院嘉兴轻合金技术工程中心，嘉兴314051；4.上海华峰新材料研发科技有限公司，上海200000）
摘要：通过对扇蚀析氨行为、开路电位、动电位极化曲线、交流阻抗谱和恒流放电性能等的测试与分析，研究了AZ31镁合金在不同浓度AI(NO，)3溶液中的电化学行为和放电性能。结果表明：随着AI(NO)溶液浓度的增大，AZ31铁镁合金的开路电位和自腐蚀电位负移，交流阻抗值减小，放电活性增强；与镁盐电解液相比，AZ31镁合金在0.6mol·L-1Al(NO,)a溶液中的恒流放电电压较高、放电曲线平稳、放电效率高、放电容量大；放电过程中AZ31镁合全电极表面生成 2Mg(OH)2·A1（OH)s，促进Mg(OH)2从电极表面脱落，有利于电解液与电极表面充分接触，使 AZ31镁合金电极具有较高的放电活性与放电稳定性。
关键词：AZ31镁合金；AI(NO)：溶液；电化学行为；放电性能
中图分类号：TG146.2
文献标志码：A
文章编号：1000-3738(2017)11-0013-06
Electrochemical Behavior and Discharge Performance of
AZ31MagnesiumAlloyinAl(NO),Solution
XIA Xingyan'-2, ZHANG Ya', SUN Yingdi', ZHOU Xuehua'-3, CHEN Qiurong'-3, ZHANG Tengfei
(1,Shanghai Institute of Microsystem and Information Technology of Chinese Academy of Sciences, Shanghai 200050, China
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3.Jiaxing Light Alloy Engineering Technology Centers of Chinese Academy of Sciences, Jiaxing 314051, China;
4.Shanghai Huafeng Material Technology Institute, Shanghai 200000, China)
Abstract: The electrochemical behavior and discharge performance of AZ31 magnesium alloy in different concentration of Al(NO, )s solution were investigated by the testing and analysis of hydrogen evolution, open circuit potential, potentiodynamic polarization curve, alternating current impedance and constant-current discharge performance, The results indicate that with the increase of concentration of Al(NO, ) solution, the open circuit potential and the free corrosion potential shifted negatively, the alternating current impedance decreased and the electrochemical activity enhanced, Compared with magnesium salt solutions, AZ31 magnesium alloy had higher constant current discharge voltage, more stable discharge curve, higher discharge efficiency and larger discharge capacity in 0. 6 mol-I,-1 Al( N(), ); solution, 2Mg(OH)> · AI (OH), was generated on the surface of the AZ31 magnesium alloy electrode in the progress of discharge which promoted the Mg( OH) to fall off from electrode surface easily and helped the electrolyte contact with the electrode surface, The AZ31 magnesium alloy electrode had high discharge activity and discharge stability
Key words: AZ31 magnesium alloy; Al(NO, ), solution; electrochemical behavior; discharge performance
0引言
收稿日期：2016-10-25；修订日期：2017-10-10
作者简介：夏邢燕（1991一），女，河北唐山人，硕士研究生
导师：陈秋荣研究员万方数据
目前，随着电池需求的不断增长，以及已有电池体系中存在的间题越来越多，开发廉价、安全、环保
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