| 浇铸法制备的PEO基偏铝酸锂复合固态电解质 |
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| 引用本文： | 张林森,郑银坤,邵蕴铮,李明睿. 浇铸法制备的PEO基偏铝酸锂复合固态电解质[J]. 电池, 2020, 0(2): 114-117 |
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| 作者姓名： | 张林森 郑银坤 邵蕴铮 李明睿 |
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| 作者单位： | 郑州轻工业大学材料与化学工程学院;郑州轻工业大学陶瓷材料研究中心;郑州市绿色化学电源重点实验室 |
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| 基金项目： | 河南省自然科学基金项目(162300410315);河南省科技攻关项目(182102210163);郑州轻工业大学众创空间孵化项目(2018ZCKJ303);郑州轻工业大学大学生科技活动项目。 |
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| 摘 要： | 通过浇铸法制备含快离子导体金属盐LiAlO2(LAO)的聚氧化乙烯(PEO)基复合固态电解质,对LAO不同质量分数的复合固态电解质进行电化学性能测试。复合固态电解质的电化学窗口拓宽,离子电导率提高到8.39×10^-5 S/cm。以复合物固态电解质组装Li/LiFePO4全固态电池,当LAO质量分数为4%,在60℃以0.1 C于2.5~4.0 V充放电,电池的首次放电比容量为153.61 mAh/g,循环50次的容量保持率仍在90%以上。
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| 关 键 词： | 锂离子电池 偏铝酸锂(LAO) 聚氧化乙烯(PEO) 固态电解质 浇铸法 |
PEO-based lithium aluminate composite solid electrolyte prepared by casting method |
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| ZHANG Lin-sen,ZHENG Yin-kun,SHAO Yun-zheng,LI Ming-rui. PEO-based lithium aluminate composite solid electrolyte prepared by casting method[J]. Battery Bimonthly, 2020, 0(2): 114-117 |
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| Authors: | ZHANG Lin-sen ZHENG Yin-kun SHAO Yun-zheng LI Ming-rui |
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| Affiliation: | (School of Material and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou,Henan 450002,China;Ceramic Materials Research Center,Zhengzhou University of Light Industry,Zhengzhou,Henan 450002,China;Zhengzhou Key Laboratory of Green Power,Zhengzhou,Henan 450002,China) |
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| Abstract: | A polyethylene oxide(PEO)-based composite solid electrolyte containing a fast ion conductor metal salt LiAlO 2(LAO)was prepared by casting method.The electrochemical performance of different mass fractions of LAO composite polymer electrolyte was analyzed.The electrochemical window of the composite solid electrolyte was broadened,the ionic conductivity reached 8.39×10-5 S/cm.The Li/LiFePO 4 all-solid-state batteries were assembled with composite solid electrolytes.When charged-discharged with 0.1 C in 2.5-4.0 V at 60℃,the initial specific discharge capacity of the battery with 4%LAO composite solid electrolyte was 153.61 mAh/g,capacity retention rate was still above 90%after 50 cycles. |
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| Keywords: | Li-ion battery lithium aluminate(LAO) polyethylene oxide(PEO) solid electrolyte casting method |
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