2020年11月15日 · Pt foil and thin films (TFs) of RuO 2 and IrO 2 are active for electrocatalytic decarboxylation (ECDX) of valeric acid at ambient conditions. Rates of ECDX and O 2 evolution increase with potential, while the ECDX selectivity depends also on anode composition.

We examine the activities of the hydrogen and oxygen evolution reactions (HER and OER) using spin-coated thin-film electrodes with Pt/C and IrO2 nano-electrocatalysts under acidic conditions. The...

2023年8月5日 · Electrochemical evaluation results show that the IrO2 synthesized at 400 °C performs the best in terms of enhanced mass activity (1.104 A mg −1 @1.6 V) and lower overpotential (315 mV@10 mA cm −2) as compared with the …

2024年9月30日 · 图7 各种金属氧化物的bet表面积与通过双电层电容测得的电化学活性表面积（ecsa）比较。 图8 (A) RRDE电极结构以及在盘电极和环电极上发生的反应方向。

2023年8月23日 · Multiple advantageous properties are achieved simultaneously by the resulting composite material (denoted as IrO 2 @TaB 2), including high electrical conductivity, improved iridium mass activity...

2021年10月14日 · Here, authors demonstrate a metastable 1T-phase IrO2 metallene oxide as an oxygen evolution electrocatalyst in acidic electrolytes. Exploring new materials is essential in the field of material...

2020年9月5日 · ECSA of IrO 2 electrode was measured using the charge required for the underpotential deposition of hydrogen (H-upd) on metallic Ir surface, after IrO 2 surface reduction. The absence of Pt peaks before and after URFC in XPS for ED-Pt@IrO 2 implies negligible exposure of Pt to the catalyst surfaces in the electrode ( Figs. 3 , S9).

作为演示，我们已经制备了TaB2支撑的IrO2纳米催化剂(即IrO2@TaB2)，该催化剂具有均匀分布的IrO2纳米颗粒(~ 1.5 nm)，高导电性网络和良好的酸性耐腐蚀性。 令人印象深刻的是，所制备的IrO2@TaB2催化剂具有优化的IrO2含量，其铱质量活性比IrO2高10倍，而在 酸性OER 中表现 ...

In this work, we propose a method to calculate the ECSA of iridium oxide in an operating PEM electrolyzer. A universal constant, 596 (± 21) μC/cm2, was obtained from the correlation of pseudocapacitive charge and ECSA of iridium oxide.

析氧反应(oer)在发展能量转化方面起着至关重要的作用，调节电催化剂的电子结构可以有效地提高催化活性和稳定性。然而，二维二氧化铱纳米片(iro2 ns)具有原子利用率高的优点，其电子结构的调整是一个挑战。本研究通…