| 微波合成掺杂LiM_xMn_2O_4(M=La,Nd,Y)的电化学性能 |
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| 引用本文： | 杨书廷,张焰峰,吕庆章,贾俊华,丁立,张明春.微波合成掺杂LiM_xMn_2O_4(M=La,Nd,Y)的电化学性能[J].应用化学,2000(5). |
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| 作者姓名： | 杨书廷 张焰峰 吕庆章 贾俊华 丁立 张明春 |
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| 作者单位： | 河南师范大学化学与环境工程学院!新乡453002 |
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| 基金项目： | 河南省科委重大科技攻关项目!(99112 0 40 0 ) |
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| 摘 要： | 以 L i2 CO3、Mn( NO3) 2 和 M( NO3) 3( M=L a,Nd,Y)为原材料 ,用溶胶 -凝胶方法和微波加热技术合成了纳米级尖晶石 L i Mx Mn2 O4 ( M=L a,Nd,Y)材料 ,XRD实验表明 ,微波合成的材料相纯度较高 ,充放电实验表明 ,在 L i Mn2 O4 中掺杂摩尔比为 0 .0 0 6的 L a、Nd和 Y可以提高其电化学比容量和充放电循环性能 .
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| 关 键 词： | LiMn_2O_4 掺杂 稀土 微波化学 |
Electrochemical Behavior of Doped LiM_xMn_2O_4 (M=La,Nd,Y) Synthesized Under Microwave Action |
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| YANG Shu-Ting,ZHANG Yan-Feng,L Qing-Zhang,JIA Jun-Hua,DING Li,ZHANG Ming-Chun.Electrochemical Behavior of Doped LiM_xMn_2O_4 (M=La,Nd,Y) Synthesized Under Microwave Action[J].Chinese Journal of Applied Chemistry,2000(5). |
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| Authors: | YANG Shu-Ting ZHANG Yan-Feng L Qing-Zhang JIA Jun-Hua DING Li ZHANG Ming-Chun |
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| Institution: | YANG Shu-Ting~*,ZHANG Yan-Feng,L Qing-Zhang,JIA Jun-Hua,DING Li,ZHANG Ming-Chun |
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| Abstract: | The doped LiM_xMn_2O_4(M=La,Nd,Y) was synthesized from gel precursor on heating in microwave oven. The precursor was obtained from Li_2CO_3 and Mn(NO_3)_2 in mixture of citric acid and ethandiol. XRD data indicated the higher phase purity of the sample as compared with that obtained in muffle heating. Charge and discharge experiments revealed that doped LiM_0.006Mn_2O_4 have better electrochemical behavior than those undoped ones and obtained from muffle heating. Doping of La, Nd and Y increased the specific discharge capacity and charge/discharge performance of the cells. |
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| Keywords: | LiMn_2O_4 doping rare earth element microwave heating |
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