Direct methanol fuel cells (DMFCs) are considered as a promising candidate for portable electronic devices and small electric vehicles due to their high gravimetric and volumetric energy densities. The operation of DMFCs requires efficient catalysts, especially on the anode to promote methanol oxidation reaction (MOR). To date, platinum has emerged as a chief contender for MOR. Unfortunately, most catalysts suffer from severe CO poisoning, which can passivate the catalytic surface and decrease the activity over time. Herein, a transient, thermal radiation method to synthesize ultrafine platinum nanoclusters (0.68 ± 0.13 nm) supported on carbon black (Pt NC/CB) is demonstrated. The sample demonstrates a great CO poisoning resistance and excellent activity toward MOR. The ultrafine platinum nanoclusters with increased active sites can promote the oxidation of CO at potential as low as 0.4 V. The Pt NC/CB displays an onset potential of 0.4 V and a peak current density of 1.30 mA cm⁻²_ECSA (electrochemical active surface area), which is superior than that of reported catalysts (0.57–1.06 mA cm⁻²_ECSA), while many of the catalysts are alloys involving noble metals. This work showcases an efficient method to prepare Pt nanoclusters with high MOR activity and great CO poisoning resistance.

中文翻译：

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超细铂纳米团簇的热辐射催化甲醇氧化反应。

直接甲醇燃料电池（DMFC）由于具有很高的重量和体积能量密度，因此被认为是便携式电子设备和小型电动汽车的有前途的候选者。DMFC的操作需要高效的催化剂，尤其是在阳极上，以促进甲醇氧化反应（MOR）。迄今为止，铂金已成为铁道部的主要竞争者。不幸的是，大多数催化剂遭受严重的CO中毒，这会钝化催化表面并随着时间的流逝降低活性。本文中，展示了一种瞬态热辐射方法，用于合成负载在炭黑（Pt NC / CB）上的超细铂纳米簇（0.68±0.13 nm）。该样品表现出良好的抗CO中毒性和对MOR的优异活性。⁻² _ECSA（电化学活性表面积），优于已报道的催化剂（0.57–1.06 mA cm ^-2 _ECSA），而许多催化剂是涉及贵金属的合金。这项工作展示了一种制备具有高MOR活性和强大的CO中毒能力的Pt纳米簇的有效方法。