摘要
The spinel LiMn_2O_(4-x)(SO_4)_x compound cathode materials were synthesizedby solid-state reaction of the calculated amounts of LiOH · H_2O, MnO_2 and MnSO_4. The results ofthe electrochemical test demonstrated that these materials exhibited excellent electrochemicalproperties. The highest reversible capacity of these series of cathode materials was ～120 mAh/g,and after 50 cycles, this reversible capacity was still around 116 mAh/g with nearly 100% reversibleefficiency, which revealed that doped sulfate ion could improve the structural stability of spinel.
The spinel LiMn_2O_(4-x)(SO_4)_x compound cathode materials were synthesizedby solid-state reaction of the calculated amounts of LiOH · H_2O, MnO_2 and MnSO_4. The results ofthe electrochemical test demonstrated that these materials exhibited excellent electrochemicalproperties. The highest reversible capacity of these series of cathode materials was ～120 mAh/g,and after 50 cycles, this reversible capacity was still around 116 mAh/g with nearly 100% reversibleefficiency, which revealed that doped sulfate ion could improve the structural stability of spinel.
基金
theNationalKeyProjectoftheMinistryofScienceandTechnologyofChina (No .98 D10 2 )
