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

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。     

Fabrication and electrochemical properties study of LiSiPON electrolyte films

The LiSiPON electrolyte films were prepared by magnetron sputtering method with different N2working pressure. The structure, morphology, composition and the relationship between ionic conductivity and N content were studied in detail. The result showed that N content in the films depended on N2partial pressure. With the N2 partial pressure increasing, N content increased firstly and gained a maximum values then decreased. N content in the LiSiPON films affected the ionic conductivity of the films.The ionic conductivity of the films increased with the N content increasing, and could reach a maximum value 10. 4× 10-6S/cm.     

Fabrication and electrochemical properties study of LiSiPON electrolyte films

The LiSiPON electrolyte films were prepared by magnetron sputtering method with different N2working pressure. The structure, morphology, composition and the relationship between ionic conductivity and N content were studied in detail. The result showed that N content in the films depended on N2partial pressure. With the N2 partial pressure increasing, N content increased firstly and gained a maximum values then decreased. N content in the LiSiPON films affected the ionic conductivity of the films.The ionic conductivity of the films increased with the N content increasing, and could reach a maximum value 10. 4× 10-6S/cm.     

固态薄膜电解质LiSiPON和其性能研究

用0.5Li3PO4-0.5Li2SiO3为靶材,用射频磁控溅射的方法在N2气氛中制备了非晶结构的固态电解质LiSiPON薄膜。N和Si的引入提高了Li2O-P2O5体系的离子电导率,在室温时电解质薄膜的离子电导率为4.83×10-6S/cm。LiSiPON电解质薄膜与Pt的分解压为5.7V左右,是一种很有潜力的应用于全固态薄膜锂离子蓄电池的电解质材料。     

Fabrication and electrochemical properties study of LiSiPON electrolyte films

1IntroductionSolid electrolyte fil ms have been attracted much attention in their application to electronic devices,high power density batteries due to their higher ionic conductivity,lower electronic conductivity andloweractivation energy[1,2].Li-ion conducting,inorganic,solid electrolyte fil ms have been used for fabricatingall-solid-state thin fil mlithiumbatteries and several kinds of materials for electrolyte fil ms have been stud-ied nowadays.Kanehori[3]reported the fabrication of all-so…