海水电池用Mg-Ga-Hg合金在模拟深海环境下的性能  

Performance of Mg-Ga-Hg alloy for seawater battery under simulated deep-sea environment

作　　者：张月 徐海波[1] 王东鹏 芦永红[1] ZHANG Yue;XU Hai-bo;WANG Dong-peng;LU Yong-hong(Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao Shandong 266100, China)

机构地区：[1]中国海洋大学化学化工学院海洋化学理论与工程技术教育部重点实验室,山东青岛266100

出　　处：《电源技术》2017年第12期1760-1763,共4页Chinese Journal of Power Sources

基　　金：国家自然科学基金(21203172);国家自然科学基金重大仪器专项(41427803);山东省博士基金(BS2011NJ019);山东省科技发展计划项目(2014GHY115036)

摘　　要：采用失重法和开路电位、恒流放电等电化学测试方法评价了模拟深海环境下Mg-Ga-Hg合金出厂态和间歇工作过程中的电化学性能。结果表明,在4℃、4 cm/s下,Mg-Ga-Hg合金的开路电位低于-1.95 V且自放电速率较慢;在1~9 m A/cm^2下放电时,稳定工作电位低于-1.90 V,电流效率维持在50%以上。此外,出厂态和间歇工作时的Mg-Ga-Hg合金均可快速启动,适合用作海水电池的负极材料,以满足深海观测仪器长期供电需求。Mass loss measurement,open circuit potential(OCP)and galvanostatic discharge methods were used to assess the electrochemical performance of Mg-Ga-Hg alloy in its initial and intermittent periods under simulated deep-sea environment.The results show that the OCP of Mg-Ga-Hg alloy is lower than-1.95V(.SCE)in4℃and4cm/s seawater,and at the discharge current density of1-9mA/cm2,its working potential can be kept at lower than-1.9V(.SCE)with more than50%current efficiency due to slow self-discharge rate.Meanwhile,Mg-Ga-Hg alloy can quickly start.Therefore,Mg-Ga-Hg alloy is a promising anode material for seawater battery to provide long-term power supply for observation instrument in deep sea.

关 键 词：Mg-Ga-Hg合金 海水电池 滞后电位 激活时间 

分 类 号：TM912[电气工程—电力电子与电力传动]