Replacement procurement: 200 MHz Solid-State NMR Spectrometer

此次采购涉及一台200 MHz固态核磁共振光谱仪和一些核磁共振探头，以及专用温度设备，可在宽温度范围内进行实验。光谱仪由200 MHz WB NMR磁体和数字双通道NMR控制台组成。NMR探头包括三种不同尺寸的MAS转子和一个静态NMR探头，适用于宽温度范围内的实验。一个关键的科学领域是通过变温6/7 Li和23 Na NMR实验表征固态电池中应用的固体电解质中Li+和Na+的传输特性。这提供了关于离子传输和相关活化能的信息，用于建立结构-性质关系。对于锂离子电池，特别关注不同阳极和阴极材料的应用及其对电化学性能的影响，随后进行原位和操作NMR实验。这包括通过6/7 Li NMR表征锂离子动力学，以及利用静态超宽线WCPMG NMR实验研究锂化产物和金属间相。

The procurement involves of a 200 MHz solid-state NMR spectrometer and a number of NMR probes in addition to dedicated temperature equipment, enabling experiments in a broad temperature range. The spectrometer consists of a 200 MHz WB NMR magnet and a digital two-channel NMR console. The NMR probes include three different MAS rotor sizes and a static NMR probe suitable for experiments in a broad temperature range. A key scientific area is the characterisation of transport properties of Li+ and Na+ in solid electrolytes as applied in solid-state batteries via variable-temperature 6/7Li and 23Na NMR experiments. This provides information on ion transport and the associated activation energies for setting up structure-property relationships. For lithium-ion batteries a particular focus is on the application of different anode and cathode-materials and their impact on the electrochemical performance as followed by in situ and operando NMR experiments. This includes the characterisation of Li-ion dynamics via 6/7Li NMR and studies of lithiation products and intermetallic phases, utilising static ultra-wideline WCPMG NMR experiments.