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用于全固态锂电池的LiSiPON电解质薄膜的制备及电导性能研究(英文)
Fabrication and electrical conductivity studies of LiSiPON electrolyte films for all-solid-state lithium batteries
【Author】 XING Guang-jian~1 LI Chao-yang~2 YU Chun-na~3 WANG Yi~3 WU Guang-ming~1 (1.Department of Materials Science and Engineering,Beijing Institute of Petrochemical Technology,Beijing I02617,China;2.Plasma Physics and Material Laboratory,Beijing Institute of Graphic Communication,Beijing 102600,China;3.Department of Mathematics and Physics,Beijing Institute of Petrochemical Technology,Beijing 102617,China)
【机构】 北京石油化工学院材料科学与工程系; 北京印刷学院等离子体物理与材料实验室; 北京石油化工学院数理系;
【摘要】 利用磁控溅射方法在 N2气氛下制备出了 LiSiPON 电解质薄膜,研究了薄膜的结构、形貌和组成,着重探讨了薄膜中 N 含量对薄膜离子电导率的影响.随着 N2分压的增加,薄膜中的 N 含量逐渐增加,0.53Pa 时达到最大,超过此分压 N 含量又逐步下降.随着薄膜中 N 含量的增加,离子电导率提高,最大达10.4×10-6S/cm(室温), 这对固态电解质薄膜来说是足够了.为了测量电解质薄膜的电化学稳定性,组装了 LiCoO2/LiSiPON/SnO2薄膜电池, 显示出了良好的循环性能.
【Abstract】 LiSiPON electrolyte films were prepared by RF magnetron sputtering under pure N2.The structure,morphology and composition of the LiSiPON electrolyte films were studied and the influence of the N content on the ionic conductivity of the films was investigated in detail.The N content of the films increased with the increasing of N2 partial pressure and reached a maximum value at 0.53Pa.For higher N2 partial pressure (>0.53Pa),N content began to decrease. The ionic conductivity of the LiSiPON films strongly depended on the N content of the films.With the increasing of the N content,the ionic conductivity of the films improved.The ionic conductivity of the film with higher N content measured at room temperature approaches 10.4×10-6S/cm,which was sufficient for the solid electrolyte films.For measurement of electrochemical stability of the electrolyte films,LiSiPON electrolyte film was incorporated into LiCoO2/SnO2 thin film battery,showing a good cycling performance.
【Key words】 LiSiPON; electrolyte thin film; ionic conductivity; all-solid-state battery;
- 【会议录名称】 第六届中国功能材料及其应用学术会议论文集(4)
- 【会议名称】第六届中国功能材料及其应用学术会议
- 【会议时间】2007-11
- 【会议地点】中国湖北武汉
- 【分类号】TM911.1;TB382.2
- 【主办单位】重庆仪器材料研究所、中国仪器仪表学会仪表材料分会、国家仪表功能材料工程技术研究中心