The Pt tube-in-tube arrays (TTAs) were designed and synthesized by ZnO template-assisted electrodeposition.As a robust integrated 3D electrocatalyst with high utilization rate and fast transport of electroactive species,the Pt TTAs exhibit a high electrochemically active surface area (ECSA) of 64.9 m2/gPt.Compared with Pt NTAs and commercial Pt/C catalyst,the Pt TTAs exhibit much improved electrocatalytic activity and durability for methanol oxidation.In addition,the Pt TTAs as electrocatalysts exhibit superior CO poisoning tolerance.This work shows the significant progress of Pt-based electrocatalysts with high-performance for direct methanol fuel cells.%通过ZnO模板辅助的电沉积方法设计和合成了Pt管中管阵列.作为一种具有利用率高、活性物质传输快的三维结构的电催化剂,Pt管中管阵列显示了高电化学活性面积(64.9 m2/gpt).与Pt纳米管和商业Pt/C催化剂相比,Pt管中管阵列明显提高了甲醇氧化电催化活性和稳定性.另外,Pt管中管阵列也显示了优越的抗CO毒化能力.这个研究展示了高性能Pt基直接甲醇燃料电池电催化的一个重要进展.
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