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Formation mechanism of spinel LiTi2O4 prepared by carbon thermal reduction reaction

机译:碳热还原反应制备的尖晶石Liti2O4的形成机理

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摘要

The formation mechanism of LiTi2O4, prepared by a carbon thermal reduction reaction using Li2CO3 and TiO2 (anatase) as starting materials and acetylene black as a reducing agent, was investigated by in situ variable temperature X-ray diffraction and thermal gravimetric analysis/differential scanning calorimetry system. It was found that the cooling rate significantly impacts on obtaining pure phase LiTi2O4 sample after forming LiTi2O4 product during the carbon thermal reduction reaction. LiTi2O4 has excellent cycling stability, remaining a specific capacity of 126.6/111.9 mA h g(-1) with a capacity fade of 5.1%/3.1% at 0.5C/1C rate after 200 cycles.
机译:通过使用Li 2 CO 3和TiO 2(锐钛矿)作为原料和乙炔黑作为还原剂的碳热还原反应制备的Liti2O4的形成机制,通过原位可变温度X射线衍射和热重分析/差示扫描量热法研究 系统。 发现冷却速率在碳热还原反应期间在形成Liti2O4产品后获得纯相LITI2O4样品显着影响。 LITI2O4具有优异的循环稳定性,剩余的特定容量为126.6 / 111.9 mA H G(-1),容量衰落为5.1%/ 3.1%,在200次循环后的0.5℃/ 1C速率。

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  • 来源
    《RSC Advances》 |2015年第118期|共4页
  • 作者单位

    Guilin Univ Technol Coll Chem &

    Bioengn Guangxi 541004 Peoples R China;

    Guilin Univ Technol Coll Chem &

    Bioengn Guangxi 541004 Peoples R China;

    Chinese Acad Sci Guangzhou Inst Energy Convers Key Lab Renewable Energy Guangzhou 510640 Guangdong Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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