| 不同合成方法制备硫/碳复合正极材料及表征 |
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| 引用本文： | 李兰,郭孝东,钟本和,陈彦逍,李龙燕,聂翔.不同合成方法制备硫/碳复合正极材料及表征[J].化工新型材料,2012,40(3):131-133. |
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| 作者姓名： | 李兰 郭孝东 钟本和 陈彦逍 李龙燕 聂翔 |
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| 作者单位： | 四川大学,成都,610065 |
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| 摘 要： | 以活性炭和升华硫为原料,采用熔融法、气相法和真空浸渍法制备硫/碳复合正极材料,通过碳硫分析、粒度测试、X射线衍射(XRD)、扫描电子显微镜(SEM)、BET及孔径分布来表征材料的结构,并用恒流充放电测试考察了所得材料的电化学性能。结果表明,气相负载法制备的复合材料具有更好的电化学性能,在15mA/g电流密度下首次放电比容量为768mAh/g,不同电流密度循环24次后容量仍有405mAh/g。
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| 关 键 词： | 负载方法 硫/碳正极材料 电化学性能 锂硫电池 |
Preparation and characterization of S/C composite anodes through different synthesis methods |
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| Li Lan
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Guo Xiaodong
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ZhongBenhe
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Chen Yanxiao
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LiLongyan
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Nie Xiang.Preparation and characterization of S/C composite anodes through different synthesis methods[J].New Chemical Materials,2012,40(3):131-133. |
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| Authors: | Li Lan Guo Xiaodong ZhongBenhe Chen Yanxiao LiLongyan Nie Xiang |
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| Affiliation: | Li Lan Guo Xiaodong Zhong Benhe Chen Yanxiao Li Longyan Nie Xiang(School of Chemical Engineering,Sichuan University,Chengdu 610065) |
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| Abstract: | Active carbon and sublimed sulfur were used as material to synthesis sulfur/carbon composite anode materials through melting method,gas-phase adsorption and vacuum impregnation method.Carbon sulfur element analysis,particle size test,X-ray diffraction(XRD),scanning electron microscope(SEM),Specific surface area test(BET) and charge/discharge tests were carried out to characterize the structure and electrochemical properties of the aimed material.The results confirmed that the material synthesized by gas-phase adsorption method performed a better electrochemical property.The specific capacity of the S/C composite was 768mAh/g in the first cycle under the current density of 15mA/g,and remained at 405mAh/g after 24 circles. |
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| Keywords: | synthesis methods S/C cathode material electrochemical property lithium sulfur battery |
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