Highly active N-doped carbon encapsulated Pd-Fe intermetallic nanoparticles for the oxygen reduction reaction
高度活跃的做 N 的碳为氧减小反应的包含的 Pd-Fe 金属间化合的 nanoparticles作者机构:Key laboratory of Material Chemistry for Energy Conversion and Storage(Huazhong University of Science and Technology)Ministry of EducationHubei Key Laboratory of Material Chemistry and Service FailureSchool of Chemistry and Chemical EngineeringHuazhong University of Science and TechnologyWuhan 430074China Institute of New-Energy MaterialsKey Laboratory of Advanced Ceramics and Machining Technology of Ministry of EducationSchool of Materials Science and EngineeringTianjin UniversityTianjin 300072China Department of Physics and AstronomyUniversity of CaliforniaIrvineIrvineCA 92697USA
出 版 物:《Nano Research》 (纳米研究(英文版))
年 卷 期:2020年第13卷第9期
页 面:2365-2370页
核心收录:
学科分类:081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学]
基 金:This work was supported by the N ational Natural Science Foundation of C hina(No.91963109) the Fundamental Research Funds for the C entral Universities(No.2172019kfyRCPY100).The authors thank the Analytical and Testing Center of HUST for allowing the use of its help and facilities for XRD and XPS This research used resources of the UCIM RI facilities and the Center for Functional Nanomaterials,which is a U.S.DOE Office of Science Facility,at Brookhaven National Laboratory under Contract No.DE-SC0012704
主 题:palladium carbon encapsulation strategy ordered intermetallic nanoparticles oxygen reduction reaction(ORR) Zn-air battery
摘 要:Developing highly efficient non-R catalysts for fuel cells and metal-air batteries is highly desirable but still challenging due to the sluggish oxygen reduction reaction(ORR).Herein,a facile and efficient strategy is demonstrated to prepare N-doped carbon encapsulated ordered Pd-Fe intermetallic(O-Pd-Fe@NC/C)nanoparticles via a one-step thermal annealing *** obtained O-Pd-Fe@NC/C nanoparticles show enhanced ORR activity,durability and anti-poisoning capacity in both acid and alkaline *** O-Pd-Fe@NC/C serving as cathode catalyst for Zn-air battery,it exhibits higher voltage platform and superior cycling performance with respect to the Zn-air battery based on the mixture of Pt/C and Ir/C *** enhanced electrocatalytic performance can be ascribed to the formation of face-centered tetragonal(fct)Pd-Fe nanoparticles,the protective action of the N-doped carbon layer and the interface confinement effect between *** in situ formed N-doped carbon shell not only restrains the Pd-Fe ordered intermetallics from aggregating effectively during the thermal annealing process,but also provides a strong anchoring effect to avoid the detachment of Pd-Fe nanoparticles from the carbon support during the potential *** facile carbon encapsulation strategy may also be extended to the preparation of a wide variety of N-doped carbon encapsulated intermetallic compounds for fuel cell application.