基于Li6.4La3Zr1.4Ta0.6O12/聚合物复合固态电解质的制备及电化学性能
CHINESE JOURNAL OF INORGANIC CHEMISTRY（2020）
Abstract
采用溶液浇注法制备以Li6.4La3Zr14Ta06O12(LLZTO)为填料、聚氧化乙烯(PEO)与聚碳酸亚丙酯(PPC)共混的固态复合电解质膜,探讨了LLZTO含量和PPC/PEO比例对复合固态电解质离子电导率的影响.研究发现,当LLZTO含量为30％(w/w)及PPC/PEO质量比为1∶1时,固态复合电解质室温离子电导率最高,达到1.14×10-4 S·cm-1.LLZTO和PPC的加入,降低了PEO基电解质的结晶性,提高了离子电导率、电化学稳定窗口(4.7 V)和锂离子迁移数(0.25),并改善了电解质与金属锂的化学稳定性.该固态复合电解质与LiFePO4/Li组装固态锂电池,室温下在0.1C循环70次后容量保持率82％,60℃下0.1C循环100次后容量保持率79％,0.5C和1C倍率下放电比容量仍能达到120.7和112.6 mAh·g-1.
MoreTranslated text
Key words
lithium secondary batteries,solid inorganic-organic hybrid electrolyte,Li6.4La3Zr1.4Ta0.6O12,polypropylene carbonate,polymer blends
AI Read Science
Must-Reading Tree
Example
Generate MRT to find the research sequence of this paper
Chat Paper
Summary is being generated by the instructions you defined