6Li and 7Li MAS NMR Studies on Fast Ionic Conducting Spinel-Type Li2MgCl4, Li2–xCuxMgCl4, Li2–xNaxMgCl4, and Li2ZnCl4
作者:R. Nagel、Th.W. Groß、H. Günther、H.D. Lutz
DOI:10.1006/jssc.2002.9534
日期:2002.5
6Li and 7Li MAS NMR spectra including 1D-EXSY (exchange spectroscopy) and inversion recovery experiments of fast ionic conducting Li2MgCl4, Li2–xCuxMgCl4, Li2–xNaxMgCl4, and Li2ZnCl4 have been recorded and discussed with respect to the dynamics and local structure of the lithium ions. The chemical shifts, intensities, and half-widths of the Li MAS NMR signals of the inverse spinel-type solid solutions
6 Li和7 Li MAS NMR光谱,包括1D-EXSY(交换光谱)和快速离子导电Li 2 MgCl 4,Li 2– x Cu x MgCl 4,Li 2– x Na x MgCl 4和Li 2的反演恢复实验关于锂离子的动力学和局部结构,已经记录并讨论了ZnCl 4。反尖晶石型固溶体Li 2– x M I x MgCl 4的Li MAS NMR信号的化学位移,强度和半峰宽(M I = Cu,Na)和铜离子分别位于四面体位点和钠离子分别位于八面体位点和正常的尖晶石型锌化合物上,证实了低场信号分配给反尖晶石型Litet Li 2 MgCl 4和Naoct等人提出的向Lioct的高场信号。(2000)。与尖晶石型Li 2–2 x Mg 1+ x Cl 4固溶体具有空位和Mg 2+离子,Cu +和Na +聚集的相反离子分别随机分布在四面体和八面体位点。活化能由于锂离子在由NMR实验获得的反尖晶石型氯化物的各种动态过程是Ë一个=