气候变化领域集成服务门户(CCPortal): Spiny Pd/PtFe core/shell nanotubes with rich high-index facets for efficient electrocatalysis

CCPortal

DOI	10.1016/j.scib.2020.07.021
	Spiny Pd/PtFe core/shell nanotubes with rich high-index facets for efficient electrocatalysis
	Tao L.; Xia Z.; Zhang Q.; Sun Y.; Li M.; Yin K.; Gu L.; Guo S.
发表日期	2021
ISSN	20959273
起始页码	44
结束页码	51
卷号	66 期号:1
英文摘要	The performance of fuel-cell related electrocatalysis is highly dependent on the morphology, size and composition of a given catalyst. In terms of rational design of Pt-based catalyst, one-dimensional (1D) ultrafine Pt alloy nanowires (NWs) are considered as a commendable model for enhanced catalysis on account of their favorable mass/charge transfer and structural durability. However, in order to achieve the noble metal catalysts in higher efficiency and lower cost, building high-index facets and shaping hollow interiors should be integrated into 1D Pt alloy NWs, which has rarely been done so far. Here, we report the first synthesis of a class of spiny Pd/PtFe core/shell nanotubes (SPCNTs) constructed by cultivating PtFe alloy branches with rich high-index facets along the 1D removable Pd supports, which is driven by the galvanic dissolution of Pd substrates concomitant with Stranski-Krastanov (S-K) growth of Pt and Fe, for achieving highly efficient fuel-cells-related electrocatalysis. This new catalyst can even deliver electrochemical active surface area (ECSA) of 62.7 m2 gPt−1, comparable to that of commercial carbon-supported Pt nanoparticles. With respect to oxygen reduction catalysis, the SPCNTs showcase the remarkable mass and specific activity of 2.71 A mg−1 and 4.32 mA cm−2, 15.9 and 16.0 times higher than those of commercial Pt/C, respectively. Also, the catalysts exhibit extraordinary resistance to the activity decay and structural degradation during 50,000 potential cycles. Moreover, the SPCNTs serve as a category of efficient and stable catalysts towards anodic alcohol oxidation. © 2020 Science China Press
关键词	Alcohol oxidation High-indexed surface Oxygen reduction reaction Pt-alloyed nanotubes Stranski-Krastanov growth
英文关键词	Anodic oxidation; Catalysis; Catalysts; Electrocatalysis; Electrolytic reduction; Fuel cells; Morphology; Nanotubes; Palladium; Carbon-supported Pt nanoparticles; Electrochemical active surface areas; Higher efficiency; Noble metal catalysts; Oxygen reduction catalysis; Stranski-Krastanov growth; Structural degradation; Structural durability; Platinum alloys
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207571
作者单位	Department of Materials Science & Engineering, College of Engineering, Peking University, Beijing, 100871, China; BIC-ESAT, College of Engineering, Peking University, Beijing, 100871, China; Beijing National Laboratory for Condensed Matter and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China; Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing, 100871, China
推荐引用方式 GB/T 7714	Tao L.,Xia Z.,Zhang Q.,et al. Spiny Pd/PtFe core/shell nanotubes with rich high-index facets for efficient electrocatalysis[J],2021,66(1).
APA	Tao L..,Xia Z..,Zhang Q..,Sun Y..,Li M..,...&Guo S..(2021).Spiny Pd/PtFe core/shell nanotubes with rich high-index facets for efficient electrocatalysis.Science Bulletin,66(1).
MLA	Tao L.,et al."Spiny Pd/PtFe core/shell nanotubes with rich high-index facets for efficient electrocatalysis".Science Bulletin 66.1(2021).