计时安培法
塔菲尔方程
线性扫描伏安法
循环伏安法
催化作用
甲醇
碳纤维
无机化学
比表面积
氮气
碳纳米管
化学
三聚氰胺
电化学
材料科学
氧气
核化学
纳米技术
有机化学
电极
物理化学
复合材料
复合数
作者
Xue Mi,Bo Gao,Xiaoyue Tan,Ming Xie,Chunjuan Gao,Yu Liu,Jianping Gao
标识
DOI:10.1016/j.ijhydene.2020.11.057
摘要
In this paper, iron and nitrogen co-doped carbon material with nanotube structure (Fe/N-CCM-T) was synthesized by pyrolyzing a mixture of Fe salt, chitosan and melamine and displayed high electrocatalytic performance for oxygen reduction reaction (ORR). The structure of the Fe/N-CCM-T was characterized and their ORR performance in alkaline media was investigated by linear sweep voltammetry, cyclic voltammetry and chronoamperometry. Fe/N-CCM-T displayed better ORR performance than other carbon materials like Fe/N-CC-800. The Fe/N-CCM-800 with a large surface area (302.5 m2/g) especially exhibited the best ORR electrocatalytic performance among the prepared carbon materials, which was also proved by its similar Tafel slope (76 mV decade−1) to Pt/C catalyst (74 mV decade−1). Fe/N-CCM-800 showed similar ORR activity as commercial Pt/C catalyst, but superior tolerance to methanol and stability. Such high ORR performance of the Fe/N-CCM-T can be attributed to its nanotube structure, high specific surface area (SSA), high graphitic-N and pyridinic-N contents.
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