Alloy Electrocatalysts(合金电催化剂)研究综述
Alloy Electrocatalysts 合金电催化剂 - This work proposes a new high-yielding, simple, and environmentally friendly method to fabricate excellent Pt-based alloy electrocatalysts with ultralow loading of Pt, which opens up new hopes for the development of PEMFC. [1] Meanwhile, Pt-alloy electrocatalysts are attractive as cathode catalysts in the low Pt-loaded membrane-electrode assembly (MEA) due to their high catalytic activities and high Pt utilization. [2] It is anticipated that the established nanoalloy electrocatalysts with modulation of metal–support interactions provide guidance for designing heterogeneous electrocatalysts with high efficiency. [3] A facile method was proposed to prepare mesoporous AgPtPd nanotubes (M-AgPtPd NTs) alloy electrocatalysts. [4] The present research provides a comprehensive study of carbon-supported intermetallic Pt-alloy electrocatalysts and assesses their stability against metal dissolution in relation to the operating temperature and the potential window using two advanced electrochemical methodologies: (i) the in-house designed high-temperature disk electrode (HT-DE) methodology as well as (ii) a modification of the electrochemical flow cell coupled to an inductively coupled plasma mass spectrometer (EFC-ICP-MS), allowing for highly sensitive time- and potential-resolved measurements of metal dissolution. [5] The novel open and hierarchical structure of Pt-Ni alloy provides a promising approach for significant improvements of the activity of Pt based alloy electrocatalysts. [6] Constructing solid-solution-alloy electrocatalysts with tunable surface electronic configuration is the key to optimize intermediate bindings and thereby to promote the activity and selectivity of CO2 reduction reaction (CO2RR). [7] Pt-based alloy electrocatalysts with both good oxygen reduction reaction (ORR) activity and stability have been widely recognized as the key points to realize the fuel cell economy, which however h. [8] Based on our prospective results, one can realistically plan for further efforts to bridge the gap between the RDE and MEA measurements completely and achieve high power densities for Pt-alloy electrocatalysts. [9] Herein, ternary PtFeM (M = Mo, V, W) alloy electrocatalysts with different levels of compressive strain on Pt were systematically prepared using the method of impregnation-reduction, post-treated at high temperatures. [10] Preparation of large quantities of high performance supported Pt-alloy electrocatalysts is crucial for the faster development and implementation of low-temperature proton exchange membrane fuel cells (PEMFC). [11] Further, the scope of application to construct the nonenzymatic electrochemical sensor for H2O2 with as-prepared nanoalloy electrocatalysts has been also tested. [12]本工作提出了一种新的高产、简单、环保的方法来制备具有超低Pt负载量的优良Pt基合金电催化剂，为PEMFC的发展开辟了新的希望。 [1] 同时，铂合金电催化剂由于其高催化活性和高铂利用率而作为低铂负载膜电极组件（MEA）中的阴极催化剂具有吸引力。 [2] 预计已建立的具有金属-载体相互作用调节的纳米合金电催化剂为设计高效的非均相电催化剂提供指导。 [3] 提出了一种制备介孔AgPtPd纳米管（M-AgPtPd NTs）合金电催化剂的简便方法。 [4] 本研究对碳负载的金属间化合物 Pt 合金电催化剂进行了全面研究，并使用两种先进的电化学方法评估了它们对金属溶解的稳定性与工作温度和电位窗口的关系：（i）内部设计的高温圆盘电极 (HT-DE) 方法以及 (ii) 对与电感耦合等离子体质谱仪 (EFC-ICP-MS) 耦合的电化学流通池的改进，可对金属进行高度灵敏的时间和电位分辨测量溶解。 [5] Pt-Ni合金的新型开放和分级结构为显着提高Pt基合金电催化剂的活性提供了一种有前景的方法。 [6] 构建具有可调表面电子构型的固溶合金电催化剂是优化中间体结合从而提高二氧化碳还原反应（CO2RR）的活性和选择性的关键。 [7] 兼具良好的氧还原反应（ORR）活性和稳定性的Pt基合金电催化剂被广泛认为是实现燃料电池经济性的关键，然而，这也是实现燃料电池经济性的关键。 [8] 根据我们的预期结果，人们可以切实地计划进一步努力完全弥合 RDE 和 MEA 测量之间的差距，并实现 Pt 合金电催化剂的高功率密度。 [9] 在此，采用浸渍-还原的方法，在高温下进行后处理，系统地制备了对 Pt 具有不同压缩应变水平的三元 PtFeM (M = Mo, V, W) 合金电催化剂。 [10] 制备大量高性能负载型铂合金电催化剂对于加快低温质子交换膜燃料电池（PEMFC）的开发和实施至关重要。 [11] 此外，还测试了使用所制备的纳米合金电催化剂构建 H2O2 非酶电化学传感器的应用范围。 [12]
Pt Alloy Electrocatalysts
However, the deployment of advanced, often shape-controlled Pt alloy electrocatalysts in actual electrodes remains challenging due to their small quantities in preparation and poor power performance in operating fuel cells. [1] The present study provides a simple method for designing highly efficient Pt alloy electrocatalysts. [2]然而，在实际电极中部署先进的、通常形状受控的 Pt 合金电催化剂仍然具有挑战性，因为它们的制备量小，并且在运行燃料电池时功率性能较差。 [1] 本研究为设计高效 Pt 合金电催化剂提供了一种简单的方法。 [2]