N-doped porous carbon-encapsulated Fe nanoparticles as efficient electrocatalysts for oxygen reduction reaction

被引：38

作者：

Zhang, Li ^{[1
,2
,3
,4
]}

Qi, Chunling ^{[1
,2
,3
]}

Zhao, Aihua ^{[1
,2
,3
]}

Xu, Guancheng ^{[1
,2
,3
]}

Xu, Jinling ^{[1
,2
,3
]}

Zhang, Lu ^{[1
,2
,3
]}

Zhang, Chi ^{[1
,2
,3
]}

Jia, Dianzeng ^{[1
,2
,3
]}

机构：

[1] Xinjiang Univ, Minist Educ, Key Lab Energy Mat Chem, Urumqi 830046, Xinjiang, Peoples R China

[2] Key Lab Adv Funct Mat, Autonomous Reg, Urumqi 830046, Xinjiang, Peoples R China

[3] Inst Appl Chem, Urumqi 830046, Xinjiang, Peoples R China

[4] Xinjiang Univ, Phys & Chem Detecting Ctr, Urumqi 830046, Xinjiang, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2018年 / 445卷

基金：

中国国家自然科学基金;

关键词：

Oxygen reduction reaction; Formate frameworks; Nitrogen doped porous carbon; Electrocatalysts; HIGHLY EFFICIENT; IRON; NANOCRYSTALS; ALKALINE; CATALYST; CO;

D O I：

10.1016/j.apsusc.2018.03.145

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

To develop non-precious metal catalysts with superior activity and stability for the oxygen reduction reaction (ORR) remains challenging for application of full cells. Herein, we designed a strategy to prepare N-doped porous carbon-encapsulated Fe nanoparticles (Fe@N/C) catalysts by simply annealing glucose, melamine and Fe-based formate frameworks [NH4][ Fe(HCOO)(3)]. Remarkably, the as-prepared Fe@N/C-800 showed excellent ORR activity with a half-wave potential of 0.810 V vs RHE, which was more positive 40 mV than commercial Pt/C in 0.1 M KOH. Besides, it also displayed strong methanol tolerance and enhanced long-term durability. Even in acidic solution, Fe@N/C-800 also exhibited good catalytic activity compared with other non-precious metal catalysts (NPMCs). The excellent electrocatalytic performance could be attributed to large surface area, good conductivity of N-doped porous carbon layer and synergistic effect of predominant pyridinic N together with Fe-relative active sites encapsulated in N-doped porous carbon layer. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：462 / 470

页数：9

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