Water splitting is intensively studied for sustainable and effective energy storage in green/alternative energy harvesting–storage–release cycles. In this work, we present our recent developments for combining liquid jet microtechnology with different types of soft X-ray spectroscopy at high-flux X-ray sources, in particular developed for studying the oxygen evolution reaction (OER). We are particularly interested in the development of in situ photon-in/photon-out techniques, such as in situ resonant inelastic X-ray scattering (RIXS) techniques at high-repetition-frequency X-ray sources, pointing toward operando capabilities. The pilot catalytic systems we use are perovskites having the general structure ABO₃ with lanthanides or group II elements at the A sites and transition metals at the B sites. Depending on the chemical substitutions of ABO₃, their catalytic activity for OER can be tuned by varying the composition.

中文翻译：

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液体射流技术和 X 射线光谱学的进步，以了解运行过程中的能量转换材料

为了在绿色/替代能源收集-存储-释放循环中可持续和有效地储存能量，水分解得到了深入研究。在这项工作中，我们介绍了我们最近在高通量 X 射线源上将液体喷射微技术与不同类型的软 X 射线光谱相结合的进展，特别是为研究析氧反应 (OER) 而开发的。我们对原位光子输入/光子输出技术的发展特别感兴趣，例如高重复频率 X 射线源的原位共振非弹性 X 射线散射 (RIXS) 技术，指向操作能力。我们使用的中试催化系统是具有一般结构 ABO _{3 的钙钛矿}在 A 位点具有镧系元素或 II 族元素，在 B 位点具有过渡金属。根据 ABO ₃的化学取代，可以通过改变组成来调整它们对 OER 的催化活性。