摘要
要提高海水激活电池的各项电性能,制备高活性的镁合金阳极材料是必需的,采用密封熔炼制备的Mg-Hg-Ga合金是一种新型的海水激活动力电池的阳极材料。采用密封熔炼铸造和半连续铸造两种方法,制备了不同成分、不同晶粒大小的Mg-Hg-Ga合金材料,采用金相显微镜进行了组织观测,采用ICP进行了材料的成分分析,采用SEM观察了放电后材料的表面形貌,采用恒电阻放电的方法测试了制备材料的电性能。重点研究了材料成分、晶粒尺寸对Mg-Hg-Ga合金放电性能和析氢量的影响。结果表明,在研究范围内,晶粒尺寸对材料电性能有一定的影响,但不是非常明显,具体表现在,随着晶粒尺寸的增大,最高电压、开路电压有所增加,激活时间也有所延长。析氢量与材料成分直接相关,与晶粒尺寸无明显联系。
In order to improve the property of seawater activation battery, it is necessary to prepare high active magnesium alloy anode material. Mg-Hg-Ga alloys are prepared by seal smelt, which is a new type anode material of seawater activation power battery. Mg-Hg-Ga alloys with different constituents and grain sizes were prepared by seal smelt and demicontinuous smelt. The microstructure, constituent analysis, morphology and electrical property of Mg-Hg-Ga alloy were investigated by metallurgical microscopy, ICP, SEM and constant resistance discharge method. The effect of material constituents and grain size on the electrical property and hydrogen evolution of Mg-Hg-Ga alloys was researched. The results show that the grain size has a certain effect on the electrical property of the materials in the study extent, but the effect is not very obvious. The maximum voltage and open circuit voltage increase with the increase of grain size, and the activation time lengthens. The hydrogen evolution is indirectly related to the material constituents, and is not related to the grain size.
出处
《电源技术》
CAS
CSCD
北大核心
2015年第5期944-946,952,共4页
Chinese Journal of Power Sources
关键词
密封熔炼
镁合金
阳极材料
动力电池
晶粒度
seal smelt
magnesium alloy
anode material
power battery
grain size
作者简介
房娃（1979-），女，山东省人，博士，主要研究方向为电池材料。
