| Ag改性氟化石墨材料及电化学性能 |
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| 引用本文： | 张亮,魏俊华,王庆杰,黎学明. Ag改性氟化石墨材料及电化学性能[J]. 电池, 2020, 0(4): 322-325 |
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| 作者姓名： | 张亮 魏俊华 王庆杰 黎学明 |
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| 作者单位： | 贵州梅岭电源有限公司;重庆大学化学化工学院 |
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| 摘 要： | 采用化学还原法对氟化石墨材料(CFx)进行金属(Ag)掺杂改性。采用XRD、SEM、能量散射谱、电化学阻抗谱及恒流放电测试,分析CFx/Ag复合材料的电化学性能。与纯CFx相比,制备的CFx/Ag复合材料的放电比容量较高。以0.1 C放电至1.50 V,最高达790 m Ah/g,且没有电压滞后现象,中值电压高达2.62 V;0.5 C、1.0 C放电时,低波电压分别提高0.82V、0.83 V。
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| 关 键 词： | 氟化石墨 银 掺杂 电化学性能 化学还原法 |
Ag modified graphite fluoride and its electrochemical performance |
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| ZHANG Liang,WEI Jun-hua,WANG Qing-jie,LI Xue-ming. Ag modified graphite fluoride and its electrochemical performance[J]. Battery Bimonthly, 2020, 0(4): 322-325 |
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| Authors: | ZHANG Liang WEI Jun-hua WANG Qing-jie LI Xue-ming |
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| Affiliation: | (State Key Laboratory of Advanced Chemical Power Sources,Guizhou Meiling Power Sources Co.,Ltd.,Zunyi,Guizhou 563003,China;College of Chemistry and Chemical Engineering,Chongqing University,Chongqing 400044,China) |
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| Abstract: | Graphite fluoride(CF x)was modified by metal Ag doping with chemical reduction.The electrochemical performance of CF x/Ag composite was analyzed by XRD,SEM,energy dispersive spectrometer(EDS),electrochemical impedance spectroscopy(EIS)and galvanostatic discharge.Compared with pure CF x,the prepared CF x/Ag composite had higher specific discharge capacity.When discharged to 1.50 V with 0.1 C,the highest specific discharge capacity could reach 790 mAh/g,there was no voltage lag phenomenon,the median voltage was as high as 2.62 V;when discharged at 0.5 C and 1.0 C,the low wave voltage was increased by 0.82 V and 0.83 V,respectively. |
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| Keywords: | fluorinated graphite silver doping electrochemical performance chemical reduction method |
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