The poisoning of pure platinum electrodes has propelled the improvement of platinum-based alloy catalysts. In this work, we report the application of exfoliated graphite electrode as an anode platform for binary platinum-based electrocatalysts for methanol oxidation in alkaline media. Platinum-based binary electrocatalysts comprising of Pt-Au and Pt-Pd nanoparticles on functionalized multi-walled carbon nanotubes (MWCNTs) support were synthesized via polyol process. The nanocomposite electrocatalysts (Pt-Au/fMWCNTs and Pt-Pd/fMWCNTs) were characterized by transmission electron microscopy (TEM) coupled with energy-dispersive X-ray spectroscopy (EDS) and X-ray diffractometer (XRD). The electrochemical activity of the Pt-Pd/fMWCNTs and the Pt-Au/fMWCNTs electrocatalysts was assessed utilizing cyclic voltammetry (CV), chronoamperometry (CA), and electrochemical impedance spectroscopy (EIS) in the presence of methanol. The nanoparticles were in the size regime of 3 to 5 nm and the XRD affirmed successful functionalization of the MWCNT and its impregnation with the binary Pt nanoparticles. The electrooxidation of methanol in alkaline conditions was seen with a high current density of about 26.1 mA cm⁻² on Pt-Au/fMWCNTs and 13.52 mA cm⁻² on Pt-Pd/fMWCNTs electrocatalysts deposited on exfoliated graphite working electrodes. The exfoliated graphite platform is a promising electrode for fuel cell application.

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纯铂电极的中毒推动了铂基合金催化剂的改进。在这项工作中，我们报告了片状石墨电极作为二元铂基电催化剂在碱性介质中甲醇氧化的阳极平台的应用。通过多元醇法合成了在功能化的多壁碳纳米管（MWCNTs）载体上由Pt-Au和Pt-Pd纳米粒子组成的铂基二元电催化剂。纳米复合电催化剂（Pt-Au / fMWCNTs和Pt-Pd / fMWCNTs）通过透射电子显微镜（TEM）结合能量色散X射线光谱仪（EDS）和X射线衍射仪（XRD）进行表征。Pt-Pd / fMWCNTs和Pt-Au / fMWCNTs电催化剂的电化学活性通过循环伏安法（CV），计时电流法（CA）进行评估，和甲醇存在下的电化学阻抗谱（EIS）。纳米粒子的尺寸范围为3到5 nm，XRD证实了MWCNT的成功功能化及其用二元Pt纳米粒子的浸渍。在碱性条件下观察到甲醇的电氧化，具有约26.1 mA cm的高电流密度^-2上铂-金/ fMWCNTs和13.52毫安厘米^-2上铂-钯/沉积在膨胀石墨工作电极fMWCNTs电催化剂。脱落的石墨平台是用于燃料电池应用的有前途的电极。

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