介孔碳载钌催化剂电化学性能测试

氢氧化反应 (HOR) 作为碱性聚合物电解质燃料电池 (APEFC) 中的阳极反应，是在动力学上比质子交换膜燃料电池 (PEMFC) 慢得多。 所以，开发高效的非铂甚至非贵金属HOR电催化剂具有重要意义。 在此处， 具有介孔沟槽状通道的碳载体 (Meso C) 和相应的 Ru 负载催化剂 (Ru/ Meso C) 专门设计用于探索多孔微结构对 HOR 电催化的影响。 电化学和燃料电池测试都表明 Ru/Meso C 具有优异的电催化性能 以 1.02 W cm2 的峰值功率密度。 Cu-UPD 和 CO 剥离方法则是创造性地耦合以探索 Ru/Meso C 的潜在机制。提出了多孔微结构相对疏水有利于 H2 进入，介孔通道可以提供一个密闭环境保护 Ru NPs 免于氧化，既促进 H2 的吸附和解离，又协同作用提高 HOR。 因此，设计多孔微结构被证明是一种可行的设计途径 高效的 HOR 电催化剂。 同时，电化学技术（Cu-UPD 和 CO-剥离）可以作为一种探测亲水-疏水特性的潜在工具

The Hydrogen Oxidation Reaction (HOR), as the anode reaction in alkaline polymer electrolyte fuel cells (APEFCs), exhibits significantly slower kinetics compared to that in proton exchange membrane fuel cells (PEMFCs). It is therefore of great significance to develop highly efficient non-platinum, even non-noble metal, HOR electrocatalysts. Herein, a carbon support with mesoporous groove-like channels (Meso C) and the corresponding Ru-supported catalyst (Ru/Meso C) were specifically designed to investigate the effect of porous microstructures on HOR electrocatalysis. Both electrochemical and fuel cell tests demonstrate that Ru/Meso C exhibits excellent electrocatalytic performance, achieving a peak power density of 1.02 W cm⁻². The Cu underpotential deposition (Cu-UPD) and CO stripping methods were creatively coupled to explore the underlying mechanism of Ru/Meso C. It is proposed that the relatively hydrophobic porous microstructure facilitates H₂ entry, while the mesoporous channels can provide a confined environment to protect Ru nanoparticles (NPs) from oxidation, which both promotes the adsorption and dissociation of H₂ and synergistically enhances the HOR performance. Therefore, designing porous microstructures has been proven to be a feasible approach for developing highly efficient HOR electrocatalysts. Meanwhile, electrochemical techniques (Cu-UPD and CO stripping) can serve as potential tools for detecting the hydrophilic-hydrophobic properties of electrocatalysts.

搜集汇总

背景与挑战

背景概述

该数据集聚焦于介孔碳载钌催化剂（Ru/Meso C）的电化学性能测试，旨在探索多孔微结构对氢氧化反应（HOR）催化效率的影响。研究发现Ru/Meso C具有优异性能，峰值功率密度达1.02 W cm²，并通过Cu-UPD和CO剥离技术揭示了多孔结构的疏水特性和保护机制对H₂吸附和解离的促进作用。数据集支持高效非贵金属HOR电催化剂的设计研究，属于化学领域，数据量550.16MB，包含512个文件，源自国家重点研发计划项目。