氮化锡负极薄膜的制备与性能研究

氮化锡是一种新型薄膜锂电池负极材料,采用射频反应磁控溅射法制备氮化锡负极薄膜,系统研究了反应溅射功率和气流比对氮化锡薄膜结构的影响,并对其充放电性能进行了研究。实验结果表明,在溅射功率75W,N2/(N2+Ar)流量比0.5的条件下所制备氮化锡薄膜结晶度较好,表面致密具有良好的电性能,首次充放电效率超过60%,50次循环后放电比容量仍保持250mAh/g。

3-甲氧基-4-哌啶基苯基重氮四氯化锡复盐的合成

本文应用染料中间体红色基B为原料合成了重氮感尤材料3-甲氧基-4-哌啶基苯基重氮四氯化锡复盐,并利用熔点、元素分析、红外光谱和核磁共振谱对各步产物进行了鉴定。

Crystal and Molecular Structure of Methylene-bis[benzobicyclo(diaza-diphenyl) stannoxide],[o-O■n(C_6H_5)_2]_2CH_2·1/2C_6H_6

Methylene-bis[benzobicyclo(diaza-diphenyl) stannoxide,C_(41)H_(34)N_4O_4Sn_2·1/2C_6H_6],Mr=923.19,m.p.126-127℃,triclinic,P1,a=9.780(4),b=14.485(2),c=15.122(6),α=74. 95(3),β=72.21(3),γ=82.68(2)°,V=1967(1) Z=2,Dx=1.56 g/cm￣3, MoKα(λ=0.71073),μ=13.20 cm-1,F(000)=922;final R=0.045, Rw=0.046 for 3637 observed reflections(I≥3σ(I)).The title compound is a bimetallo-heterocyclic complex prepared by condensation.Each tin atom has a trigonal bipyramidal coordination with two oxygen atoms occupying the axial positions.