摘要
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 m^2/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.
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 ceils.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2017年第2期193-198,共6页
Acta Chimica Sinica
基金
Project supported by the National Natural Science Foundation of China(51173212)
Natural Science Foundation of Guangdong Province(S2013020012833)~~
关键词
PT
电催化剂
管中管
甲醇氧化
电活性
稳定性
Pt
electrocatalyst
tube-in-tube
methanol oxidation
electroactivity
durability
