矿冶工程
礦冶工程
광야공정
Mining and Metallurgical Engineering
2015年
5期
113-116
,共4页
胡柳泉%何杜%廖达前%郭忻%周春仙%周勤俭%习小明
鬍柳泉%何杜%廖達前%郭忻%週春仙%週勤儉%習小明
호류천%하두%료체전%곽흔%주춘선%주근검%습소명
锂含量%正极材料%Li[LixNi0.13Co0.13Mn0.54]O2%电化学性能
鋰含量%正極材料%Li[LixNi0.13Co0.13Mn0.54]O2%電化學性能
리함량%정겁재료%Li[LixNi0.13Co0.13Mn0.54]O2%전화학성능
lithium content%cathode materials%Li[LixNi0.13Co0.13Mn0.54]O2%electrochemical properties
将前驱体Ni0.13Co0.13Mn0.54(OH)1.6与Li2CO3 混合,烧结合成了富锂锰基正极材料Li[LixNi0.13Co0.13Mn0.54]O2(x=0.09,0.12, 0.16,0.22,0.24,0.29,0.33,0.37),采用XRD、SEM对其进行表征,并进行充放电测试. 研究结果表明:最佳配锂量为x=0.22,此时Li1.22Ni0.133Co0.131Mn0.54O2 正极材料以12.5 mA/g的充放电电流密度,在2~4.8 V之间进行电性能测试,初始放电比容量高达253.7 mAh/g,首次效率为68.4%.
將前驅體Ni0.13Co0.13Mn0.54(OH)1.6與Li2CO3 混閤,燒結閤成瞭富鋰錳基正極材料Li[LixNi0.13Co0.13Mn0.54]O2(x=0.09,0.12, 0.16,0.22,0.24,0.29,0.33,0.37),採用XRD、SEM對其進行錶徵,併進行充放電測試. 研究結果錶明:最佳配鋰量為x=0.22,此時Li1.22Ni0.133Co0.131Mn0.54O2 正極材料以12.5 mA/g的充放電電流密度,在2~4.8 V之間進行電性能測試,初始放電比容量高達253.7 mAh/g,首次效率為68.4%.
장전구체Ni0.13Co0.13Mn0.54(OH)1.6여Li2CO3 혼합,소결합성료부리맹기정겁재료Li[LixNi0.13Co0.13Mn0.54]O2(x=0.09,0.12, 0.16,0.22,0.24,0.29,0.33,0.37),채용XRD、SEM대기진행표정,병진행충방전측시. 연구결과표명:최가배리량위x=0.22,차시Li1.22Ni0.133Co0.131Mn0.54O2 정겁재료이12.5 mA/g적충방전전류밀도,재2~4.8 V지간진행전성능측시,초시방전비용량고체253.7 mAh/g,수차효솔위68.4%.
The cathode material of Li[LixNi0.13Co0.13Mn0.54]O2 (x=0.09, 0.12, 0.16, 0.22, 0.24, 0.29, 0.33, 0.37) was synthesized by sintering the mixture of Ni0.13 Co0.13 Mn0.54 ( OH ) 1.6 and Li2 CO3 , which was analyzed by X-ray diffractometry ( XRD ) , scanning electron microscopy ( SEM ) and electrochemical tests. The results showed that Li1.22 Ni0.133 Co0.131 Mn0.54 O2 prepared with optimal proportion of Lithium ( x=0.22) achieved the best electrochemical performance. The testing of the electrical performance between 2~4. 8 V at 12. 5 mA/g showed the initial discharge capacity was up to 253.7 mAh/g with the initial efficiency at 68.4%.
