Hartung Steffen, Bucher Nicolas, Bucher Ramona, Srinivasan Madhavi
TUM CREATE, Singapore 138602, Singapore.
Rev Sci Instrum. 2015 Aug;86(8):086102. doi: 10.1063/1.4926465.
Electrochemical in operando X-ray diffraction (XRD) is a powerful method to analyze structural changes of energy storage materials while inserting/de-inserting charge carriers, such as Li- or Na-ions, into/from a host structure. The design of an XRD in operando cell is presented, which enables the use of thin (6 μm) aluminum foil as X-ray window as a non-toxic alternative to conventional beryllium windows. Owing to the reduced thickness, diffraction patterns and their changes during cycling can be observed with excellent quality, which was demonstrated for two cathode materials for sodium-ion batteries in a half-cell set-up, P2-Na(0.7)MnO2 and Na(2.55)V6O16 ⋅ 0.6H2O.
电化学原位X射线衍射（XRD）是一种强大的方法，用于分析储能材料在向主体结构中插入/脱除电荷载流子（如锂离子或钠离子）时的结构变化。本文介绍了一种原位XRD电池的设计，该设计能够使用薄（6μm）铝箔作为X射线窗口，作为传统铍窗口的无毒替代品。由于厚度减小，可以以优异的质量观察衍射图案及其在循环过程中的变化，这在半电池设置中对两种钠离子电池阴极材料P2-Na(0.7)MnO2和Na(2.55)V6O16 ⋅ 0.6H2O进行了证明。
