Synthesis of FeCo-N@N-doped Carbon Oxygen Reduction Catalysts via Microwave-assisted Ammoxidation
學年 108
學期 2
出版（發表）日期 2020-05-07
作品名稱 Synthesis of FeCo-N@N-doped Carbon Oxygen Reduction Catalysts via Microwave-assisted Ammoxidation
作品名稱（其他語言）
著者 Hung-Chih Kuo; Shou-Heng Liu; Yan-Gu Lin; Chao-Lung Chiang; Daniel C. W. Tsang
單位
出版者
著錄名稱、卷期、頁數 Catalysis Science & Technology 10(12), p.3949-3958
摘要 A core–shell structured FeCo–N@N-doped carbon derived from biomass waste (sugarcane and palm kernel shell) is facilely prepared by hydrothermal carbonization and NH3 microwave ammoxidation methods. The fabricated carbons are thoroughly characterized by a variety of analytical techniques. The electrochemical oxygen reduction reaction (ORR), methanol resistance and durability are also tested in alkaline electrolyte. Compared to the carbons without ammoxidation treatments, FeCo–N@N-doped carbons, which contain FeCo–N in the core (evidenced by X-ray absorption spectroscopy) and highly porous carbon (verified by N2 adsorption–desorption isotherms) in the shell, exhibit superior ORR performance. Among the FeCo–N@N-doped carbons, the sugarcane-derived FeCo–N@N-doped carbon has better ORR activity than palm kernel shell-derived FeCo–N@N-doped carbon, which may be due to the more exposed active FeCo–N sites. Accordingly, the sugarcane-derived FeCo–N@N-doped carbon with a FeCo alloy ratio of 1 : 1 shows a comparable activity (onset potential 0.91 V vs. RHE), a better stability (through a four-electron pathway) and excellent methanol tolerance as compared to commercially available Pt/C catalysts. These biowaste-derived carbons with a unique core–shell structure synthesized via a simple microwave-assisted ammoxidation route can provide a promising electrode for oxygen reduction in fuel cells.
關鍵字
語言 en
ISSN 2044-4753; 2044-4761
期刊性質 國外
收錄於 SCI SSCI Scopus
產學合作
通訊作者 Shou-Heng Liu
審稿制度 是
國別 GBR
公開徵稿
出版型式 ,電子版
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