Solid-state nuclear magnetic resonance (ssNMR) spectroscopy is a powerful technique for characterizing the local structure and dynamics of battery and other materials. It has been widely used to investigate bulk electrode compounds, electrolytes, and interfaces. Beside common ex situ investigations, in situ and operando techniques have gained considerable importance for understanding the reaction mechanisms and cell degradation of electrochemical cells.

Herein, we present the recent development of in situ magic angle spinning (MAS) NMR methodologies to study batteries with high spectral resolution, setting into context possible advances on this topic. A mini cylindrical cell type insert for 4 mm MAS rotors is introduced here, being demonstrated on a Li/VO₂F electrochemical system, allowing the acquisition of high-resolution ⁷Li MAS NMR spectra, spinning the electrochemical cell up to 15 kHz.

固态核磁共振 (ssNMR) 光谱是表征电池和其他材料的局部结构和动力学的强大技术。它已广泛用于研究本体电极化合物、电解质和界面。除了常见的异位研究之外，原位和操作技术对于理解电化学电池的反应机制和电池降解也具有相当重要的意义。

在此，我们介绍了用于研究高光谱分辨率电池的原位魔角旋转（MAS）核磁共振方法的最新进展，并结合了该主题可能取得的进展。这里介绍了用于 4 mm MAS 转子的迷你圆柱形电池类型插件，并在 Li/VO ₂ F 电化学系统上进行了演示，允许采集高分辨率⁷ Li MAS NMR 谱，将电化学电池旋转至高达 15 kHz。