General Method for Synthesis Transition‐Metal Phosphide/Nitrogen and Phosphide Doped Carbon Materials with Yolk‐Shell Structure for Oxygen Reduction Reaction. Issue 6 (20th February 2019)

• Record Type: Journal Article
• Authors: Yu, Yue; Ma, Jun; Chen, Changli; Fu, Yuanyuan; Wang, Yefei; Li, Kai; Liao, Yi; Zheng, Lirong; Zuo, Xia
• Is Part Of: ChemCatChem. Volume 11:Issue 6(2019)
• Page Start: 1722
• Page End: 1731
• Publication Date: 2019-02-20
• Subjects: yolk-shell -- transition metal phosphides -- XANES -- N and P doped carbon -- oxygen reduction reaction; Catalysis -- Periodicals; 541.39505
• DOI: 10.1002/cctc.201801935
• Languages: English
• ISSNs: 1867-3880

Abstract

Abstract: The transition metal phosphides have gradually emerged as promising electrocatalysts candidate for oxygen reduction reaction in recent years. As a research hotspot of transition metal phosphides, exploring their mechanism of catalytic activity and the influence of unique morphology is of great significance. In this study, a series of yolk‐shell structure catalysts are fabricated only by pyrolyzing cyclophosphazene microspheres and metal salt without using any other templates, which M2 P (M=Fe, Co, Ni) act as the core and N, P co‐doped carbon as the shell. The yolk‐shell structures aim to overcome the inferior conductivity and aggregation problems traditionally existed in application of transition metal phosphides through combination of transition metal phosphides and doped carbon materials. The prepared Fe2 P/NPC, Co2 P/NPC and Ni2 P/NPC catalysts exhibit excellent ORR catalytic activity through the four‐electron pathway, together with large electrochemically active surface area, superior stability and admiring methanol tolerance. Abstract : What came first: yolk or shell? A series of yolk‐shell structure M2 P/NPC catalysts are fabricated by general method without templates for efficient oxygen reduction in alkaline condition.