Direct alcohol fuel cell (DAFC) exhibits several unique features, such as the high tendency to energy conversion, low cost, abundance of fuel, less hazardous to the environment, and simple handling, and has diverse applications in microelectronics. In this context, the present study describes a facile and straightforward method to fabricate the PdNPs@MnO₂-PPy catalyst as an anode electrode for the oxidation of glycerol in an alkaline medium. Herein, the PdNPs@MnO₂-PPy catalyst was developed through a two-step electrochemical deposition technique. The as-prepared catalyst was characterized by physicochemical and electrochemical techniques. Electrochemical measurements revealed that the PdNPs@MnO₂-PPy catalyst exhibits excellent catalytic properties, anti-poisoning resistance to intermediates, and durability than that of already reported catalysts and Pd/C. These unique advantages of the proposed catalyst have been achieved due to PdNPs, strong synergistic effects, and MnO₂-PPy support providing superior electron transfer. The proposed electrocatalyst exhibits high current density (240.2mA/cm²), large electrochemically active surface area (302.1 m²g⁻¹), and good long-term stability (450 cycles). Further, the electrocatalysis mechanism of glycerol oxidation was studied. The design, synthesis, and excellent catalytic response of PdNPs@MnO₂-PPy offer a conception and promising potential to be used as an anode electrode in direct alcohol fuel cells.

直接酒精燃料电池（DAFC）具有能量转换倾向高、成本低、燃料丰富、对环境危害小、操作简单等特点，在微电子领域有着广泛的应用。在此背景下，本研究描述了一种简单而直接的方法来制造PdNPs @MnO ₂ -PPy 催化剂作为在碱性介质中氧化甘油的阳极。在此，PdNPs @MnO ₂ -PPy 催化剂是通过两步电化学沉积技术开发的。所制备的催化剂通过物理化学和电化学技术进行表征。电化学测量表明 PdNPs@MnO ₂-PPy 催化剂表现出优异的催化性能、对中间体的抗中毒能力以及比已经报道的催化剂和 Pd/C 的耐久性。由于PdNPs 、强大的协同效应和提供优异电子转移的MnO ₂ -PPy 载体，所提出的催化剂的这些独特优势已经实现。所提出的电催化剂具有高电流密度（240.2mA/cm ²）、大电化学活性表面积（302.1 m ² g ^-1）和良好的长期稳定性（450 次循环）。进一步研究了甘油氧化的电催化机理。PdNPs@MnO ₂的设计、合成和优异的催化响应-PPy 提供了一个概念和有希望的潜力，可用作直接酒精燃料电池中的阳极。