铬盐新用途——亚铬酸钠及熔盐电池简介  

New application of chromium salt:brief introduction for sodium chromite and molten salt battery

作　　者：纪柱[1] 

机构地区：[1]中海油天津化工研究设计院,天津300131

出　　处：《无机盐工业》2015年第3期64-67,共4页Inorganic Chemicals Industry

摘　　要：根据专利及相关文献,介绍了铬盐的新用途,即以亚铬酸钠为正极活性物质的熔盐蓄电池。熔盐电池制备方法:以亚铬酸钠为熔盐电池的正极活性物质,以锡钠合金或锌钠合金为负极活性物质,夹在两种活性物质之间的隔膜采用事先含浸了二氟磺酰胺钠-二氟磺酰胺钾熔融盐的玻璃布。熔盐电池性能:放电容量高,能量密度达到290 W·h/L,是同体积锂电池的2倍;比容量为124 m A·h/g,充放电1 000次后电池容量仍有76%。熔盐电池应用领域:由于熔盐电池需保持温度为80℃才可正常工作,因此可用于需要长期不间断工作的领域,如家庭供电、电动汽车以及办公楼和工厂的备用电源。并且介绍了亚铬酸钠的制备方法。According to relevant patents and literatures, a new application of chromium salt, i.e.the molten salt storage battery with the sodium chromite as the cathodic active substance ,was introduced.The preparation method of the molten salt storage battery：Using sodium chromite as the active cathodic substance ,with tin-sodium alloy or zinc-sodium alloy as the negative active substance,and with glass-fibre impregnated by sodium difluorosulfamate-potassium difluorosulfamate molten salt as the membrane between the two active substances.The performance of the molten salt storage battery was as follows ： High discharge capacity ;The energy density could reach 290 W·h/L which was twice of the same volume of the lithium battery ;The specific capacity was 124 mA. h/g;And the capacity retention was till 76% after 1 000 cycles of charge and discharge.The application fields of molten salt battery ： As the molten salt battery only worked at the temperature of 80 ℃, it can be applied in the fields need to work uninterruptedly, such as household electricity supply, electromobile, and stand-by power for officebuildings and workshops.Furthermore, the preparation method of sodium chromite was also introduced.

关 键 词：铬盐 亚铬酸钠 熔盐蓄电池 

分 类 号：TQ136.11[化学工程—无机化工]