LiFePO_4在饱和LiNO_3溶液中的锂化行为  

Lithiation Behavior of LiFePO_4 in Saturated Lithium Nitrate Solution

作　　者：杨赛[1] 黄可龙[1] 刘素琴[1] 王海波[1] 

机构地区：[1]中南大学化学化工学院,长沙410083

出　　处：《无机化学学报》2007年第1期141-144,共4页Chinese Journal of Inorganic Chemistry

基　　金：国家教育部博士基金(No.50201014)资助项目

摘　　要：The lithiation behavior of LiFePO4 in saturated LiNO3 solution is investigated by analyses of cyclic voltammetry(CV), potentiostatic intermittent titration(PITT) and electrochemical impedance spectra(EIS), The results show that LiFePO4 has good electrochemical reversibility in saturated LiNO3 solution. The lithium diffusion coefficients measured by PITT vary with potential, get its lowest value at the beginning of phase transition. EIS show that phase transition will baffle lithium diffusion in electrode.The lithiation behavior of LiFePO4 in saturated LiNO3 solution is investigated by analyses of cyclic voltammetry （CV）, potentiostatic intermittent titration （PITY） and electrochemical impedance spectra （EIS）, The results show that LiFePO4 has good electrochemical reversibility in saturated LiNO3 solution. The lithium diffusion coefficients measured by PITY vary with potential, get its lowest value at the beginning of phase transition. EIS show that phase transition will baffle lithium diffusion in electrode.

关 键 词：水溶液锂离子电池 LIFEPO4 扩散系数 相变 

分 类 号：O614.811[理学—无机化学] O614.111[理学—化学]