电化学2012，Vol.18Issue(2)：108-112,5.
Na_xM_yFe（CN）_6（M=Fe,Co,Ni）：一类新颖的钠离子电池正极材料
Na_xM_yFe（CN）_6（M=Fe,Co,Ni）：A New Class of Cathode Materials for Sodium Ion Batteries
摘要
Abstract
Three types of Prussian blue compounds,NaxMyFe（CN）6（M=Fe,Co,Ni）,were prepared simply by solution precipitation method and tested as cathode materials for sodium-ion batteries.X-ray diffraction and SEM measurements demonstrated that the prepared materials,namely,NaFeFe（CN）6,Na2CoFe（CN）6 and Na2NiFe（CN）6,exhibited a perfect cubic structure with a particle size of several tens nanometers.Cyclic voltammetric and galvanostatic cycling tests revealed very different electrochemical behaviors of these three materials.The specific capacities of NaFeFe（CN）6 and Na2CoFe（CN）6 could reach 113 and 120 mAh·g-1,respectively,indicating that both Fe（CN）64-and Fe2＋/Co2＋ ions in the Prussian blue lattices were electrochemically activated.However,Ni ions in the Prussian blue lattice were found to be electrochemically inactive.Therefore,the Na2NiFe（CN）6 delivered a specific capacity of only 64 mAh·g-1 but with quite stable cyclability.These preliminary results suggest a possible use of the Prussian blue compounds as low cost and environmentally benign cathode materials for sodium-ion batteries.关键词
钠离子电池/普鲁士蓝类化合物/NaxMyFe（CN）6（M=Fe,Co,Ni）Key words
sodium-ion batteries/Prussian blue compounds/NaxMyFe(CN)6(M=Fe/Co/Ni)分类
化学化工引用本文复制引用
钱江锋,周敏,曹余良,杨汉西..Na_xM_yFe（CN）_6（M=Fe,Co,Ni）：一类新颖的钠离子电池正极材料[J].电化学,2012,18(2):108-112,5.基金项目
国家自然科学基金项目（No.2097132）资助 （）
