AC+Li(NiCoMn) O2/Li4Ti5O12+MWCNTs混合型电容器

O646; 以钛酸锂(Li4Ti5O12)/多壁碳纳米管(MWCNTs)复合材料为负极、活性炭(AC)/镍钴锰酸锂(Li(NiCoMn) O2)复合材料为正极,组装成混合型电容器并研究其电化学性能.利用扫描电子显微镜(SEM),透射电子显微镜(TEM),X射线衍射仪(XRD),拉曼光谱仪(Raman),热重分析仪(TGA)对电极材料进行分析,通过恒流充放电(GCD)和交流阻抗谱(EIS)研究混合型电容器的电化学性能.结果 表明:掺杂适量MWCNTs和镍钴锰酸锂可提高电容器的电化学性能.当MWCNTs质量分数为5％时,在电流密度为0.1 A/g下恒流充放电时比容量达161.5 mAh/g.在0....

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Published in材料工程 Vol. 48; no. 1; pp. 128 - 135
Main Authors 陈玮, 孙晓刚, 胡浩, 王杰, 李旭, 梁国东, 黄雅盼, 魏成成
Format Journal Article
LanguageChinese
Published 南昌大学机电工程学院,南昌,330031 20.01.2020
Subjects
混合电容
镍钴锰酸锂
钛酸锂
活性炭
多壁碳纳米管
Online AccessGet full text
ISSN1001-4381
DOI10.11868/j.issn.1001-4381.2018.000310

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Abstract O646; 以钛酸锂(Li4Ti5O12)/多壁碳纳米管(MWCNTs)复合材料为负极、活性炭(AC)/镍钴锰酸锂(Li(NiCoMn) O2)复合材料为正极,组装成混合型电容器并研究其电化学性能.利用扫描电子显微镜(SEM),透射电子显微镜(TEM),X射线衍射仪(XRD),拉曼光谱仪(Raman),热重分析仪(TGA)对电极材料进行分析,通过恒流充放电(GCD)和交流阻抗谱(EIS)研究混合型电容器的电化学性能.结果 表明:掺杂适量MWCNTs和镍钴锰酸锂可提高电容器的电化学性能.当MWCNTs质量分数为5％时,在电流密度为0.1 A/g下恒流充放电时比容量达161.5 mAh/g.在0.1～1 A/g时,最大功率密度和最大能量密度分别为993.2W/kg和52.2 Wh/kg.5000周次恒流充放电循环后,容量保持率在92.2％左右,库仑效率仍有99.1％,展现出较高的能量密度和功率密度,并具有优异的循环性能.
AbstractList O646; 以钛酸锂(Li4Ti5O12)/多壁碳纳米管(MWCNTs)复合材料为负极、活性炭(AC)/镍钴锰酸锂(Li(NiCoMn) O2)复合材料为正极,组装成混合型电容器并研究其电化学性能.利用扫描电子显微镜(SEM),透射电子显微镜(TEM),X射线衍射仪(XRD),拉曼光谱仪(Raman),热重分析仪(TGA)对电极材料进行分析,通过恒流充放电(GCD)和交流阻抗谱(EIS)研究混合型电容器的电化学性能.结果 表明:掺杂适量MWCNTs和镍钴锰酸锂可提高电容器的电化学性能.当MWCNTs质量分数为5％时,在电流密度为0.1 A/g下恒流充放电时比容量达161.5 mAh/g.在0.1～1 A/g时,最大功率密度和最大能量密度分别为993.2W/kg和52.2 Wh/kg.5000周次恒流充放电循环后,容量保持率在92.2％左右,库仑效率仍有99.1％,展现出较高的能量密度和功率密度,并具有优异的循环性能.
Author 孙晓刚
李旭
梁国东
陈玮
胡浩
王杰
魏成成
黄雅盼
AuthorAffiliation 南昌大学机电工程学院,南昌,330031
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CHEN Wei
WANG Jie
HUANG Ya-pan
SUN Xiao-gang
HU Hao
LIANG Guo-dong
WEI Cheng-cheng
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DocumentTitle_FL AC+ Li(NiCoMn)O2/Li4Ti5O12 + MWCNTs hybrid capacitors
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Keywords 混合电容
镍钴锰酸锂
钛酸锂
活性炭
多壁碳纳米管
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Snippet O646; 以钛酸锂(Li4Ti5O12)/多壁碳纳米管(MWCNTs)复合材料为负极、活性炭(AC)/镍钴锰酸锂(Li(NiCoMn)...
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Title AC+Li(NiCoMn) O2/Li4Ti5O12+MWCNTs混合型电容器
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