Large scale restructuring of porous Pt-Ni nanoparticle tubes for methanol oxidation: A highly reactive, stable, and restorable fuel cell catalyst
Large scale restructuring of porous Pt-Ni nanoparticle tubes for methanol oxidation: A highly reactive, stable, and restorable fuel cell catalyst
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用于甲醇氧化的多孔 Pt-Ni 纳米粒子管的大规模重组：一种高反应性、稳定且可恢复的燃料电池催化剂
DOI：
10.1039/c1sc00233c
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发表时间：
2011-01-01
期刊：
影响因子：
8.4
通讯作者：
Yu, Shu-Hong
中科院分区：
文献类型：
--
作者：
Cui, Chun-Hua;Li, Hui-Hui;Yu, Shu-Hong
我们报道了一种大规模重组的多孔Pt-Ni纳米管用于甲醇的电催化氧化，显示出高的催化活性，稳定性和抗中毒性。通过室温下在强酸电解液中的电位循环，表面重构极大地提高了电化学活性表面积（ECSA）。经过长时间稳定性测试后，再经过一次电位循环后，ECSA值可以恢复到初始值，表明该催化剂有望成为下一代高稳定性直接甲醇燃料电池催化剂。
We report a large scale restructuring of porous Pt-Ni nanoparticle tubes for electrocatalytic oxidation of methanol, showing high catalytic activity, stability and resistance to poisoning. The surface restructuring highly improved the electrochemical active surface area (ECSA) by potential cycling in a strong acid electrolyte at room temperature. After a long-time stability test, the ECSA can be restored to its initial value after another potential cycling, thus this kind of electrocatalyst shows the potential possibility for next-generation highly restorable catalysts in direct methanol fuel cells.