Catalyst composites based on Pt and CeO₂ on carbon for methanol oxidation were successively prepared for application in direct-methanol fuel cells (DMFCs). In this work, the catalyst was modified by decoration of CeO₂ onto several carbons, including carbon black (CB), carbon nanotubes (CNT), graphene oxide (GO), reduced graphene oxide (rGO) and mixed carbons, followed by the electrochemical deposition of Pt. The dispersal of CeO₂ and Pt nanoparticles onto the carbon surfaces was confirmed with a face-centred cubic structure. The use of single and mixed carbons takes admirable advantage of the coexisting CeO₂ and Pt nanoparticles, confirming the positive effect of various carbon structures for electrocatalytic enhancement towards methanol oxidation. The CeO₂ also improves the ability for CO oxidation, resulting in a reduction of CO poisoning. The outcomes show an enhancement of the activity and stability so that such alternative as-prepared materials can be introduced to improve the anodic oxidation in DMFCs.

依次制备了基于碳的Pt和CeO ₂的甲醇氧化催化剂复合材料，用于直接甲醇燃料电池（DMFC）。在这项工作中，通过将CeO ₂装饰到几种碳上来修饰催化剂，包括炭黑（CB），碳纳米管（CNT），氧化石墨烯（GO），还原氧化石墨烯（rGO）和混合碳，然后进行电化学铂沉积 用面心立方结构确认了CeO ₂和Pt纳米颗粒在碳表面的分散。单碳和混合碳的使用充分利用了共存的CeO _2的优势和Pt纳米颗粒，证实了各种碳结构对于甲醇催化电催化增强的积极作用。CeO ₂还提高了CO氧化的能力，从而减少了CO中毒。结果显示出活性和稳定性的增强，因此可以引入此类替代的制备材料来改善DMFC中的阳极氧化。