MgFeSiO_4 prepared via a molten salt method as a new cathode material for rechargeable magnesium batteries  

作　　者：YILINUER Tuhudahong 

机构地区：[1]Department of Chemical Engineering,Shanghai Jiao Tong University

出　　处：《Chinese Science Bulletin》2011年第4期386-390,共5页

基　　金：supported by the National Natural Science Foundation of China (20603022,20973112);the National Basic Research Program of China (2007CB209700)

摘　　要：Well-crystallized MgFeSiO4 microparticles were synthesized at different temperatures by a simple molten salt method using KCl flux. As a new cathode for rechargeable magnesium batteries,the material shows a reversible Mg2+ intercalation-deintercalation process. In 0.25 mol/L Mg(AlCl2EtBu) 2/THF electrolyte,MgFeSiO4 synthesized at 900°C can deliver a 125.1 mAh/g initial dis-charge capacity and a 91.4% capacity retention on the 20th cycle at a rate of 0.1C(about 15.6 mA/g) . The results show that MgFeSiO4 could be a good host for Mg2+ intercalation,and a potential cathode material for high-energy rechargeable magnesium batteries.Well-crystallized MgFeSiO4 microparticles were synthesized at different temperatures by a simple molten salt method using KC1 flux. As a new cathode for rechargeable magnesium batteries, the material shows a reversible Mg〉 intercalation-deintercalation process. In 0.25 mol/L Mg（A1C12EtBu）2/THF electrolyte, MgFeSiO4 synthesized at 900~C can deliver a 125.1 mAh/g initial dis- charge capacity and a 91.4% capacity retention on the 20th cycle at a rate of 0.1C （about 15.6 mA/g）. The results show that MgFeSiO4 could be a good host for Mg2＋ intercalation, and a potential cathode material for high-energy rechargeable magnesium batteries.

关 键 词：阴极材料 二次电池 镁电池 熔盐法 放电容量 容量保持 集成电路 正极材料 

分 类 号：TM911.14[电气工程—电力电子与电力传动]