2021年5月5日 · Here, using a suite of correlative operando scanning probe and X-ray microscopy techniques, we establish a link between the oxygen evolution activity and the local operational chemical, physical...

2023年6月1日 · The authors identified an onset potential of Fe redeposition via eQCM as well as a potential gap between OER potential and Fe redeposition, which deteriorates catalyst self-healing. Another strategy to increase the performance of LDH electrocatalysts that can be investigated by eQCM is the increase of the charge transfer ability of these ...

2022年1月19日 · In this section, we discuss the current popular in situ/operando characterization technologies, including surface interrogation-scanning electrochemical microscopy (SI-SECM), transmission electron microscopy (TEM), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), ambient pressure X-ray photoelectron ...

2021年10月13日 · An active borate-intercalated NiCoFe-LDH catalyst is synthesized using electrodeposition and shows no degradation after OER tests at 10 mA cm−2 at pH 14 for 1000 h, demonstrating its self ...

2023年11月24日 · Fe-containing transition-metal (oxy)hydroxides are highly active oxygen-evolution reaction (OER) electrocatalysts in alkaline media and ubiquitously form across many materials...

It is a key challenge to explore an efficient, stable and low-cost catalyst for the oxygen evolution reaction (OER). Herein, we show a facile strategy to significantly enhance the electrocatalytic activity and stability of crystalline α-FeOOH by rapid heat treatment.

2014年10月5日 · By combining standard RDE tests with electrochemical quartz crystal microbalance 42 (EQCM) measurements and inductively coupled plasma mass spectrometry (ICP–MS), we provide a detailed description of corrosion processes that take place in parallel to the OER. The catalysts investigated are RuO 2 and MnO x.

2021年12月17日 · 电化学石英微晶天平(eqcm)技术是一种将石英晶体微天平(qcm)和电化学装置相结合的原位表征技术。eqcm的高灵敏度使其能够实时测量电极表面动态电化学过程中的质量变化，其感应电极界面中性物质沉积/溶解的能力极大地促进了机理研究。

2019年8月1日 · RRDE and eQCM studies clarify the role of the citrate anion in controlling the deposited cobalt phases. The OER catalytic activities are correlated with the deposited cobalt phase structure for the prepared electrodes.

Moreover, operando optical spectroscopy and electrochemical quartz-crystal microbalance (EQCM) measurements demonstrate that the substituted Fe 3+ cations reduce the transition potential from the CoOOH phase to the OER-active CoO 2 phase.