| 用废旧锂离子电池回收的钴制备LiCoO2 |
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| 引用本文： | 陈亮,瞿毅,赵鹏飞,唐新村.用废旧锂离子电池回收的钴制备LiCoO2[J].电池,2011,41(2):59-61. |
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| 作者姓名： | 陈亮 瞿毅 赵鹏飞 唐新村 |
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| 作者单位： | 中南大学化学化工学院; |
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| 基金项目： | 国家自然科学基金(20876178) |
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| 摘 要： | 用废旧锂离子电池回收的钴,通过草酸铵(NH4)2C2O4]沉淀-固相法制备钴酸锂(LiCoO2),考察了(NH2)2C2O4用量、沉淀反应温度及时间等的影响,最优条件为:n(C2O42-):n(Co2+)=1.15:1.00,在40～50℃下沉淀10 min,相应的钴回收率为99.2%.将CoC2O4和过量5%的Li...
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| 关 键 词： | 废旧锂离子电池 回收 草酸钴(CoC2O4) 制备 钴酸锂(LiCoO2) |
Preparing LiCoO_2 using Co recovered from spent Li-ion battery |
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| CHEN Liang,QU Yi,ZHAO Peng-fei,TANG Xin-cun.Preparing LiCoO_2 using Co recovered from spent Li-ion battery[J].Battery Bimonthly,2011,41(2):59-61. |
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| Authors: | CHEN Liang QU Yi ZHAO Peng-fei TANG Xin-cun |
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| Affiliation: | CHEN Liang,QU Yi,ZHAO Peng-fei,TANG Xin-cun(College of Chemistry and Chemical Engineering,Central South University,Changsha,Hunan 410083,China) |
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| Abstract: | Lithium cobalt oxide(LiCoO2) was prepared via ammonium oxalate (NH4)2C2O4] precipitation-solid phase synthesis method by using cobalt(Co)recovered from spent Li-ion battery.Effects of(NH4)2C2O4 concentration,precipitation reaction temperature and time were investigated.A Co recovery efficiency of 99.2% was achieved at optimum conditions of n(C2O42-)∶n(Co2+)= 1.15∶1.00,precipitating at 40～50 ℃ for 10 min.LiCoO2 was obtained by calcining CoC2O4 with 5% excess Li2CO3 at 850 ℃ for 12 h.XRD,field-emission scanning electron microscope(FE-SEM)and charge-discharge tests showed that the product was laminate-stacked layered structure,the particle size was less than 10 μm,when cycled in 2.8～4.4 V at 0.2 C,the initial charge and discharge capacity was 143.8 mAh/g and 140.0 mAh/g,respectively,the capacity retention at the 10th cycle was 96%. |
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| Keywords: | spent Li-ion battery recovery cobalt oxalate(CoC2O4) preparation lithium cobalt oxide(LiCoO2) |
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