⁷Li NMR spectroscopy is known to be very sensitive to translational motion in solids and therefore highly suited for investigating temperature-dependent Li⁺ dynamics. A number of different NMR methods are available for choosing the dynamical range of the observed Li⁺ jump frequencies present in inorganic solid-state electrolytes. This includes ⁷Li spin-alignment echo NMR spectroscopy, static ⁷Li lineshape analysis, and ⁷Li spin-lattice relaxometry that can be used to detect Li⁺ jumps in the Hz, kHz, and MHz range, respectively. We introduce and discuss these NMR techniques with respect to their theoretical description and practical application to investigate the Li⁺ dynamics at different time scales for the two solid-state electrolytes Li₈SiP₄ and Li₁₄SiP₆. The data evaluation for all methods is discussed in detail, focusing on the determination of Li⁺ jump frequencies and activation energies for the investigated self-diffusion processes in a given structure.

众所周知，^{7 Li NMR 光谱对固体中的平移运动非常敏感，因此非常适合研究与温度相关的 Li +}动力学。许多不同的 NMR 方法可用于选择存在于无机固态电解质中的观察到的 Li ^{+跳跃频率的动态范围。}这包括⁷ Li 自旋对准回波 NMR 光谱、静态⁷ Li 线形分析和⁷ Li 自旋晶格弛豫，可分别用于检测Hz、kHz 和 MHz 范围内的Li ^+跳跃。我们介绍并讨论了这些 NMR 技术的理论描述和实际应用，以研究 Li⁺两种固态电解质 Li ₈ SiP ₄和 Li ₁₄ SiP ₆在不同时间尺度下的动力学。详细讨论了所有方法的数据评估，重点是确定给定结构中所研究的自扩散过程的 Li ⁺跃迁频率和活化能。