三聚氰胺
电催化剂
催化作用
热解
碳纤维
聚苯胺
材料科学
化学工程
甲醇
氮气
限制电流
无机化学
氧气
金属
化学
电化学
复合材料
有机化学
电极
复合数
聚合物
冶金
物理化学
工程类
聚合
作者
Jinzhen Huang,Jiecai Han,Tangling Gao,Xinghong Zhang,Jiajie Li,Zhenjiang Li,Ping Xu,Bo Song
出处
期刊:Carbon
[Elsevier]
日期:2017-11-01
卷期号:124: 34-41
被引量:44
标识
DOI:10.1016/j.carbon.2017.08.033
摘要
Nitrogen-abundant compounds are generally regarded as perfect precursors toward in situ synthesis of nitrogen-doped carbon materials. In this study, we demonstrate a facile one-pot procedure to synthesize polyaniline-coated melamine fiber ([email protected]) as the precursor, in which melamine fiber (MF) acts as both scaffold and nitrogen source. After high-temperature pyrolysis, wrinkled nitrogen-doped carbon nanoribbons (NCNRs) with high specific surface area (701 cm2 g−1) and cumulative pore volume (3.13 cm3 g−1) are fabricated for electrocatalytic oxygen reduction reaction (ORR). The NCNR catalyst exhibits comparative onset potential, half-wave potential, and limiting current to those of commercial Pt/C (20 wt%, E-TEK) in alkaline media, mainly due to its high specific surface area and sufficient active sites induced by synthetic effect between nitrogen atom and carbon framework. Moreover, NCNR catalyst shows enhanced stability and high tolerance to methanol crossover effect. This study is expected to broaden new horizon to the design and fabrication of new metal-free carbon-based electrocatalyst for ORR.
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