Sub-50 nm Iron-Nitrogen-Doped Hollow Carbon Sphere-Encapsulated Iron Carbide Nanoparticles as Efficient Oxygen Reduction Catalysts

被引：228

作者：

Tan, Haibo ^{[1
,2
,3
,9
,10
,11
]}

Li, Yunqi ^{[1
,4
,9
,12
]}

Kim, Jeonghun ^{[5
,13
,14
]}

Takei, Toshiaki ^{[1
,9
]}

Wang, Zhongli ^{[1
,9
]}

Xu, Xingtao ^{[1
,9
]}

Wang, Jie ^{[1
,9
]}

Bando, Yoshio ^{[1
,6
,9
,15
]}

Kang, Yong-Mook ^{[7
,16
]}

Tang, Jing ^{[1
,9
]}

Yamauchi, Yusuke ^{[2
,3
,5
,8
,10
,11
,13
,14
,17
]}

机构：

[1] Natl Inst Mat Sci NIMS, Int Ctr Mat Nanoarchitecton WPI MANA, Tokyo, Japan

[2] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Qingdao 266042, Peoples R China

[3] Waseda Univ, Fac Sci & Engn, Tokyo, Japan

[4] Beihang Univ, Dept Automot Engn Sch Transportat Sci & Engn, Beijing 100191, Peoples R China

[5] Sch Chem Engn Australian Inst Bioengineering & Na, Univ Queensland, Brisbane, Qld 4072, Australia

[6] Australian Inst Innovat Mat AIIM, Univ Wollongong, North Wollongong NSW 2500, Australia

[7] Dongguk Univ Seoul, Dept Energy & Mat Engn, Seoul 04620, South Korea

[8] Kyung Hee Univ, Dept Plant Environm New Resources, 1732 Deogyeong daero, Gyeonggi, South Korea

[9] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton WPI MANA, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan

[10] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Qingdao 266042, Peoples R China

[11] Waseda Univ, Fac Sci & Engn, Shinjyuku Ku, 3-4-1 Okubo, Tokyo 1698555, Japan

[12] Beihang Univ, Sch Transportat Sci & Engn, Dept Automot Engn, Beijing 100191, Peoples R China

[13] Univ Queensland, Sch Chem Engn, Brisbane, Qld 4072, Australia

[14] Univ Queensland, AIBN, Brisbane, Qld 4072, Australia

[15] Univ Wollongong, AIIM, North Wollongong, NSW 2500, Australia

[16] Dongguk Univ Seoul, Dept Energy & Mat Engn, Seoul 04620, South Korea

[17] Kyung Hee Univ, Dept Plant & Environm New Resources, 1732 Deogyeong Daero, Yongin 446701, Gyeonggi Do, South Korea

来源：

ADVANCED SCIENCE | 2018年 / 5卷 / 07期

基金：

澳大利亚研究理事会; 新加坡国家研究基金会;

关键词：

hollow carbon; iron carbide; nitrogen doping; oxygen reduction reaction; triblock copolymer templates; HIGH ELECTROCATALYTIC ACTIVITY; GRAPHITIC LAYERS; ACTIVE-SITES; FACILE SYNTHESIS; POROUS CARBON; FE; PERFORMANCE; NANOTUBES; ALKALINE; NANOSPHERES;

D O I：

10.1002/advs.201800120

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Sub-50 nm iron-nitrogen-doped hollow carbon sphere-encapsulated iron carbide nanoparticles (Fe3C-Fe,N/C) are synthesized by using a triblock copolymer of poly(styrene-b-2-vinylpyridine-b-ethylene oxide) as a soft template. Their typical features, including a large surface area (879.5 m(2) g(-1)), small hollow size (approximate to 16 nm), and nitrogen-doped mesoporous carbon shell, and encapsulated Fe3C nanoparticles generate a highly active oxygen reduction reaction (ORR) performance. Fe3C-Fe,N/C hollow spheres exhibit an ORR performance comparable to that of commercially available 20 wt% Pt/C in alkaline electrolyte, with a similar half-wave potential, an electron transfer number close to 4, and lower H2O2 yield of less than 5%. It also shows noticeable ORR catalytic activity under acidic conditions, with a high half-wave potential of 0.714 V, which is only 59 mV lower than that of 20 wt% Pt/C. Moreover, Fe3C-Fe,N/C has remarkable long-term durability and tolerance to methanol poisoning, exceeding Pt/C regardless of the electrolyte.

引用

页数：9

共 76 条

[1] Sp2 C-Dominant N-Doped Carbon Sub-micrometer Spheres with a Tunable Size: A Versatile Platform for Highly Efficient Oxygen-Reduction Catalysts [J].