IrO 2 nanoparticles (∼1.7 nm) are anchored on MnO 2 nanowires using a molten salt-assisted synthesis for the first time. The IrO 2 /MnO 2 catalyst exhibits 7 times higher mass activity than the commercial IrO 2. Dynamic electron transfer between Ir …

2017年11月17日 · We demonstrate that inducing a lattice strain in IrO 2 crystal structure due to interface lattice mismatch enables an enhancement of the OER catalytic activity. The lattice strain is obtained by the direct growth of IrO 2 nanoparticles on a specially exposed surface of α-MnO 2 nanorods via a simple two-step hydrothermal synthesis.

2024年1月2日 · Herein, we present a low-iridium electrocatalyst in which tensile-strained iridium atoms are localized at manganese-oxide surface cation sites (TS-Ir/MnO 2) for high and sustainable OER activity....

IrO 2 nanoparticles (∼1.7 nm) are anchored on MnO 2 nanowires using a molten salt-assisted synthesis for the first time. The IrO 2 /MnO 2 catalyst exhibits 7 times higher mass activity than the commercial IrO 2. Dynamic electron transfer between Ir …

Specifically, IrO 2 nanoparticles are anchored onto MnO 2 nanowires (denoted as IrO 2 /MnO 2), through a molten salt-assisted synthesis method. This optimized IrO 2 /MnO 2 electrocatalyst features a substantially reduced iridium content and enhanced electronic structure due to strong metal-support interactions.

本工作采用慢速线性电位扫描伏安法测试并分析Ti/IrO2+MnO2电极的准稳态极化曲线,深入地研究Ti/IrO2+MnO2电极析氧反应动力学,并求出相关析氧动力学参数。 结合前人的研究基础,提出析氧电催化反应历程及动力学模. 型,并进行理论计算验证。 这对于提高阳极电流效率,降低阳极产物中副产物浓度及催化活性材料的选择有重大的理论及实际意义。 采用热分解法制备Ti/IrO2+MnO2电极。 前驱体为氯铱酸(H2IrO6·6H2O )和硝酸锰(MnNO3 )混合的醇(正丁醇+ 异丙醇) 溶液,分别配 …

2017年10月1日 · Herein, we report a unique design of catalytic cathodes composed of IrO 2 -decorated two-dimensional (2D) δ-MnO 2 (IrO 2 /MnO 2) grown directly on carbon cloth without the use of polymer binder. MnO2 is an effective catalyst for ORR and OER in Li−O 2 cells [21]. In addition, it is cheap and easy to be prepared.

2024年12月10日 · 本研究通过直接的熔盐辅助策略成功合成了锚定在MnO2底物（IrO2/MnO2）上的IrO2纳米颗粒（~1.7 nm）。 我们的研究结果表明，IrO2/MnO2催化剂的铱质量含量低至21% %，在0.5 M H2SO4中表现出7倍的析氧反应（OER）固有活性，显著优于商用IrO2和自制IrO2。

Here, we leverage the redox properties of the Mn3+/Mn4+ couple as electronic modulators to develop a low-iridium, durable electrocatalyst for acidic OER. Specifically, IrO2 nanoparticles are anchored onto MnO2 nanowires (denoted as IrO2/MnO2), through a molten salt-assisted synthesis method.

Here, we leverage the redox properties of the Mn 3+ /Mn 4+ couple as electronic modulators to develop a low-iridium, durable electrocatalyst for acidic OER. Specifically, IrO 2 nanoparticles are anchored onto MnO 2 nanowires (denoted as IrO 2 /MnO 2), through a molten salt-assisted synthesis method.