摘要
用流变相反应法以乙酸锂、乙酸锰、柠檬酸为原料合成正极材料Li0.98Mn2O4,探讨了合成条件;经X-射线衍射表征,热重法(TG)和差热分析(DTA)以及电化学性能测试表明:Li0.98Mn2O4结晶性能很好,为尖晶石结构,其首次放电比容量高达130 mAh/g,具有较好的循环性,40次循环后还能保持初始容量的88%以上。
The positive electrode material Li0.98Mn2O4 was synthesized with theological phase reaction method from lithium acetate, manganese acetate and citric acid. Synthesis conditions were investigated. The synthesized erystelline Li0.98Mn2O44 with a structure of spinel was characterized by XRD、TG、DTA and electrochemieal measurements. It showed good electrochemical performance with a first discharge capacity of 130 mAh/g which retained 88% after 40 cycles.
出处
《化学世界》
CAS
CSCD
北大核心
2007年第2期71-74,共4页
Chemical World
基金
国家自然科学基金资助项目(20071026)
