| 尖晶石LiMn2O4纳米粉的合成 及其交流阻抗性能研究 |
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| 引用本文： | 林永,赵锟,王曼丽.尖晶石LiMn2O4纳米粉的合成 及其交流阻抗性能研究[J].化学研究与应用,2011,23(8):975-979. |
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| 作者姓名： | 林永 赵锟 王曼丽 |
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| 作者单位： | 遵义师范学院,贵州 遵义,563002 |
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| 基金项目： | 贵州省教育厅自然科学研究项目(教黔科2007071)资助; 遵义市科技局基金项目(遵市科合社字[2008]27号)资助 |
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| 摘 要： | 以LiOH和电解二氧化锰(EMD)为原料,葡萄糖为还原剂,制备了粒径为200nm左右的球状尖晶石LiMn2O4纳米粒子,并用X射线衍射(XRD)和扫描电镜(SEM)对样品进行了结构和形貌的表征.在循环伏安测试(CV)峰电位下研究了该材料嵌脱锂相变过程中的交流阻抗(EIS)图谱,并提出一种新的等效电路对EIS图谱进行拟合...
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| 关 键 词： | 纳米粒子 尖晶石锰酸锂 水相还原法 交流阻抗性能 等效电路 |
Study on synthesization of spinel-LiMn_2O_4 nanoparticles and its electrochemical impedance spectroscopies |
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| LIN Yong,ZHAO Kun,WANG Man-li.Study on synthesization of spinel-LiMn_2O_4 nanoparticles and its electrochemical impedance spectroscopies[J].Chemical Research and Application,2011,23(8):975-979. |
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| Authors: | LIN Yong ZHAO Kun WANG Man-li |
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| Institution: | LIN Yong,ZHAO Kun,WANG Man-li(Department of Chemistry,Zunyi Normal College,Zunyi 563002,China) |
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| Abstract: | LiMn2O4 spinel nanoparticles was prepared using LiOH,electrolytic manganese dioxide(EMD),and glucose.These nanoparticles were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM).Electrochemical impedance spectroscopies of Li ion in spinel lithium manganese oxide were studied at the peak potential of cyclic voltammetry(CV).New equivalent circuits modeling were proposed to fit the experimental electrochemical impedance spectroscopies.The results indicated the reversibility of lithium ion... |
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| Keywords: | nanoparticles spinel lithium manganese oxide aqueous reduction method electrochemi cal im pedance spectroscopy equivalent circuit |
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