文章摘要
王效聪,朱黎霞,张洪.镁电池用负极材料的表面修饰及腐蚀行为[J].精细化工,2019,36(10):
镁电池用负极材料的表面修饰及腐蚀行为
Surface Modification and Corrosion Behavior of Anode Material for Magnesium Battery
投稿时间:2019-01-11  修订日期:2019-04-17
DOI:
中文关键词: 镁电池  镁负极  EMT乳液  表面修饰  防腐蚀性能
英文关键词: magnesium battery  magnesium anode  EMT emulsion  surface modification  corrosion resistance
基金项目:
作者单位E-mail
王效聪 西安电子科技大学 15619269976@163.com 
朱黎霞 西安电子科技大学 lxzhu@xidian.edu.cn 
张洪 中科院西安光学精密机械研究所  
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中文摘要:
      通过浸涂的方式,以具有小分子水磁化的纳米粉体乳液(EMT)为表面活性剂,对镁电池用负极材料进行表面改性,并采用XRD和SEM对合金表面的相组成及表面形貌进行了分析。以质量分数为3.5%的NaCl溶液作为电解质溶液,在室温下对经EMT修饰的镁负极进行了抗腐蚀实验,并采用Tafel曲线和电化学阻抗谱研究了不同镀膜次数对镁负极防腐性能的影响。结果表明,镀膜3、6、9次镁负极的腐蚀电流密度分别为106.8、90.74和89.0 μA/cm2,均低于未镀膜样品(283.8 μA/cm2),表现出较好的防腐蚀性能。EMT在材料表面形成的SEI膜,能够在不影响材料相结构的前提下,有效抑制镁负极在海水中的腐蚀行为,且随着镀膜次数的增加其耐腐蚀性能增加。
英文摘要:
      The anode materials of the magnesium batteries are surface-modified by dip coating using a nano-powder emulsion (EMT) with a small molecule water magnetization. XRD and SEM were used to analyze the mi-crostructure and surface morphology of the samples. The effects of different coatings on the corrosion re-sistance of the magnesium anodes were investigated by means of immersion test, EIS and Tafel plots at 25 ℃ in an electrolyte solution with 3.5 % NaCl solution. As a result, the corrosion current densities of the magnesium anodes respectively coated 3, 6 and 9 times are 106.8, 90.74 and 89.0 μA/cm2, which were lower than that of uncoated samples (283.8 μA/cm2). The SEI film forms on the surface of the materials by EMT can effectively inhibit the corrosion behavior of the magnesium anode without affecting the phase structure of the materials, and the corrosion resistance increases with the increase of the number of coatings.
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