普鲁士蓝及其衍生物中的钴、铁对其作为锂离子电池正极时比容量的影响  

The effect of prussian blue and its analogues containing Fe and Co on specific capacity as cathode material of lithium-ion battery

作　　者：姜巍 王二东[1] 孙海[1] 王素力[1] 孙公权[1] 

机构地区：[1]中国科学院大连化学物理研究所,辽宁大连116023 [2]中国科学院大学,北京100039

出　　处：《储能科学与技术》2017年第6期1280-1285,共6页Energy Storage Science and Technology

基　　金：中科院重点部署项目(KGBD-EW-P08)

摘　　要：普鲁士蓝及其衍生物(以下简称PBAs)凭借其简单的制备工艺、优良的倍率性能、低廉的成本等优势成为一种具有潜力的碱金属离子和碱土金属离子电池正极材料。通过合成含有钴、铁的PBAs,借助X射线粉末衍射技术(XRD)、扫描电子显微技术(SEM)和电化学技术等表征测试手段获得其晶体结构、形貌和电化学行为,研究处于不同结构中的铁和钴之间相互影响的规律。结果表明,在"M_1—N≡≡C—M_2"结构中,通过改变不同过渡金属元素M_2可对过渡金属元素M_1的电化学活性有着显著影响。Prussian blue and its analogues（PBAs） are considered as promising cathode materials of alkali metal-ion or alkaline earth metal-ion batteries due to their simple preparation process,high rate performance and low cost.Firstly,we prepared a series of PBAs containing Fe and Co,and then the crystal structure,morphology and electrochemical performance were characterized through XRD,SEM and electrochemical technologies.Finally,the interaction between Fe and Co in different structures was explored.The results suggested that in the structures of ＂M1—N≡≡C—M2＂,by changing transition metal M1 can notable influence the electrochemical activity of transition metal M2.

关 键 词：普鲁士蓝 正极材料 锂离子电池 

分 类 号：O646.541[理学—物理化学]