Interface-rich Au-doped PdBi alloy nanochains as multifunctional oxygen reduction catalysts boost the power density and durability of a direct methanol fuel cell device
作者机构：State-Local Joint Laboratory for Comprehensive Utilization of BiomassCenter for R&D of Fine ChemicalsCollege of Chemistry and Chemical EngineeringGuizhou UniversityGuiyang 550025China State Key Laboratory of Coal Mine Disaster Dynamics and ControlChongqing UniversityChongqing 400044China Key Lab of Organic Optoelectronics&Molecular EngineeringTsinghua UniversityBeijing 100084China Multi-scale Porous Materials CenterInstitute of Advanced Interdisciplinary Studies&School of Chemistry and Chemical EngineeringChongqing UniversityChongqing 400044China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2022年第15卷第7期
页 面：6036-6044页
核心收录：
学科分类：0808[工学-电气工程] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
基 金：supported by the National Natural Science Foundation of China(No.21571038) Foundation of Guizhou Province(No.2019-5666) Education Department of Guizhou Province(No.2021312) State Key Laboratory of Coal Mine Disaster Dynamics and Control(Chongqing University,No.2011DA105287-ZR202101) the Open Fund of the Key Lab of Organic Optoelectronics&Molecular Engineering(Tsinghua University) State Key Laboratory of Physical Chemistry of Solid Surfaces(No.202009)
主 题：Au-doped PdBi(PdBiAu)nanochains one-dimensional structure active auxiliary oxygen reduction reaction direct methanol fuel cells
摘 要：The development of cathode oxygen reduction reaction(ORR)catalysts with high characteristics for practical,direct methanol fuel cells(DMFCs)has continuously increased the attention of *** this work,interface-rich Au-doped PdBi(PdBiAu)branched one-dimensional(1D)alloyed nanochains assembled by sub-6.5 nm particles have been prepared,exhibiting an ORR mass activity(MA)of 6.40 A·mgPd^(−1) and long-term durability of 5,000 cycles in an alkaline *** MA of PdBiAu nanochains is 46 times and 80 times higher than that of commercial Pt/C(0.14 A·mgPt^(−1))and Pd/C(0.08 A·mgPd^(−1)).The MA of binary PdBi nanochains also reaches 5.71 A·mgPd^(−1).Notably,the PdBiAu nanochains exhibit high in-situ carbon monoxide poisoning resistance and high methanol *** actual DMFC device tests,the PdBiAu nanochains enhance power density of 140.1 mW·cm^(−2)(in O_(2))/112.4 mW·cm^(−2)(in air)and durability compared with PdBi nanochains and Pt/*** analysis of the structure–function relationship indicates that the enhanced performance of PdBiAu nanochains is attributed to integrated functions of surficial defect-rich 1D chain structure,improved charge transfer capability,downshift of the d-band center of Pd,as well as the synergistic effect derived from“Pd-Biand/or“Pd-Audual active sites.
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