利用软锰矿合成锰酸锂正极材料的实验研究
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- 英文论文题名：The Experimental Study On Synthesis Of The Cathode Material Of LiMn_2O_4 By Using Soft Manganese Ore
- 论文作者：王忠兵 ; 彭兵 ; 刘恢 ; 张立奉
- 英文论文作者：Zhongbing-Wang ; Pengbing ; Liuhui ; Lifeng-Zhang ; Central South University School Of Metallurgy And Environment ; Chinese National Engineering Research Center for Control & Treatment of Heavy Metals Pollution
- 年：2016
- 作者机构：中南大学冶金与环境学院;国家重金属污染防治工程技术研究中心;
- 论文关键词：软锰矿 ; LiMn2O4 ; 正极材料 ; 温度 ; 烧结 ; 保温时间
- 会议召开时间：2016-12-01
- 会议录名称：第六届重金属污染防治及风险评价研讨会暨重金属污染防治专业委员会2016年学术年会论文集
- 语种：中文
- 分类号：TM912;TQ131.11
- 学会代码：HJKP
- 会议名称：第六届重金属污染防治及风险评价研讨会暨重金属污染防治专业委员会2016年学术年会
- 会议地点：中国福建厦门
- 主办单位：中国环境科学学会
- 学会名称：中国环境科学学会
- 页数：7
- 文件大小：1452k
- 原文格式：D
- 会议级别：全国
摘要
利用稀盐酸浸出后的软锰矿,采用固相法合成LiMn_2O_4正极材料,并且系统地研究了二次烧结温度、合成温度及保温时间等因素对LiMn_2O_4电性能的影响。采用扫描电子显微镜(SEM)和X射线衍射光谱(XRD)对合成的材料进行分析以及电性能测试。实验结果表明:合成出的物质与文献报道中的尖晶石结构一致,为LiMn_2O_4单晶结构。最佳合成条件为控制合成温度在850℃左右,采用二段烧结方式,第一段温度为650℃,第二段温度为850℃,保温时间为24h,电池电性能可达到最佳,电池首次放电比容量可达到103.4m Ah/g。
Using the soft manganese ore after leaching by dilute hydrochloric acid,synthesizing the cathode material of LiMn_2O_4 by solid phase method,And systematically study.the effects of the secondary sintering temperature, synthesis temperature and holding time etc on the electrical properties of LiMn_2O_4. Analysis and testing the electrical performance through scanning electron microscopy(SEM), X-ray diffraction(XRD). The results shows: The synthesized material is consistent with the spinel structure reported in the literature and is a single crystal LiMn_2O_4 structure. The optimum synthesis conditions were as follows: The synthesis temperature was controlled at 850℃, Using Two-stage sintering means,the first sintering temperature is 650 ℃, the second temperature range is 850℃,the holding time interval is 24 hours,and the battery electrical properties can be optimized,the first discharge capacity of the battery can reach 103.4m Ah/g.
Using the soft manganese ore after leaching by dilute hydrochloric acid,synthesizing the cathode material of LiMn_2O_4 by solid phase method,And systematically study.the effects of the secondary sintering temperature, synthesis temperature and holding time etc on the electrical properties of LiMn_2O_4. Analysis and testing the electrical performance through scanning electron microscopy(SEM), X-ray diffraction(XRD). The results shows: The synthesized material is consistent with the spinel structure reported in the literature and is a single crystal LiMn_2O_4 structure. The optimum synthesis conditions were as follows: The synthesis temperature was controlled at 850℃, Using Two-stage sintering means,the first sintering temperature is 650 ℃, the second temperature range is 850℃,the holding time interval is 24 hours,and the battery electrical properties can be optimized,the first discharge capacity of the battery can reach 103.4m Ah/g.
引文
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[2]李圣宇,何文,王朝阳等.高能量尖晶石锰酸锂电池正极材料的研究进展[J].佛山陶瓷,2016,235(2):18-21.
[3]罗伟,高铁锰矿烧结成矿机理和工艺研究,2014.
[4]魏涛,王红明,杜莉莉,等.尖晶石Li Mn2O4的合成及微量Fe的掺砸改性[J].电池工业,2010,15(2):108-110.
[5]Lee K M,Choi H J,Lee J G.Combustion Synthesis of Spinel Li Mn2O4 Cathode Materials for Lithium Secondary Batteries[J].J Materials Science Letters,2001,20:1309-1311.
[6]王兆翔,陈立泉.锂离子正极材料的研究进展[J]电源技术,2008,32(5):287-292.
[7]傅强,陈彬,黄小文,等.锂离子电池正极材料Li Mn2-xCr O4电化学性能的研究[J].高等学校化学学报。2004,25(1):128-130.
[8]陈西知,吴秋芳,马新胜.纳米材料在锂电池正极材料中应用的研究进展[J]材料导报,2010,11(24):38-43.
[9]康慨,戴受惠,万玉华.锂离子电池阴极材料Li MxMn2-xO4的合成方法研究[J].无机材料学报,2001,16(4):586?594.
[10]Slee W,Kim K S,Moo H H S,et al.Electrochemical and Structural Characteristical of Metal Oxide-coated Lithium Manganese Oxide(Spinel Type)Part.in the Range of 2.5-4.2V[J]Power Sources,2004,130:227-232.
[11]李军,黄慧民,魏关锋,等.改进固相法制备Li Fe PO4/C正极材料及其性能[J].化工新型材料,2007,35(6):46.
[12]Makhonina E V,Dubasoba V S,Perow V S,et al.Synthesis and Properties of Lithi-um Manganese Spinels[J].Inorganic Meterials,2001,37(10):1073-1079.
[13]Lu C H,Saha S K,low Temperture Synthesis of Nano-sized Lithium Manganese Sxide Power by the Sol-gel Process Using PVA[J].JSol–Gel Science and Technology,2001,20:27-34.