FeCo nanoalloys embedded in nitrogen-doped carbon nanosheets/bamboo-like carbon nanotubes for the oxygen reduction reaction

被引：37

作者：

Song, Xiao-Wei ^{[1
,2
,3
]}

Zhang, Shuwei ^{[1
]}

Zhong, Haihong ^{[1
]}

Gao, Yuan ^{[1
]}

Estudillo-Wong, Luis A. ^{[4
]}

Alonso-Vante, Nicolas ^{[5
]}

Shu, Xin ^{[1
,3
]}

Feng, Yongjun ^{[1
,3
]}

机构：

[1] Beijing Univ Chem Technol, Coll Chem, Beijing Engn Ctr Hierarch Catalysts, State Key Lab Chem Resource Engn, 15 Beisanhuan East Rd, Beijing 100029, Peoples R China

[2] Anqing Normal Univ, Sch Chem & Chem Engn, Anhui Higher Educ Inst, Key Lab Funct Coordinat Cpds, Anqing 246011, Peoples R China

[3] Beijing Univ Chem Technol, Anqing Res Inst, Anqing 24600, Anhui, Peoples R China

[4] Inst Politecn Nacl, CIIEMAD, Dept Soc & Polit Ambiental, Calle 30 Junio 1520, Mexico City 07340, DF, Mexico

[5] Univ Poitiers, CNRS, UMR 7285, IC2MP, F-86073 Poitiers 9, France

来源：

INORGANIC CHEMISTRY FRONTIERS | 2021年 / 8卷 / 01期

基金：

中国国家自然科学基金;

关键词：

METAL-ORGANIC-FRAMEWORK; IN-SITU INTEGRATION; POROUS CARBON; BIFUNCTIONAL ELECTROCATALYSTS; ALLOY NANOPARTICLES; ACTIVE-SITE; AT-NC; CATALYSTS; IRON; PERFORMANCE;

D O I：

10.1039/d0qi01037e

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Herein, FeCo bimetallic organic frameworks (MOFs) with different compositions were fabricated by controlling the initial molar ratio of Fe3+/Co2+ ions. Through a one-step carbonization treatment of FeCo MOFs and the melamine mixture, a series of FeCo nanoalloys encapsulated in bamboo-like N-doped carbon nanotubes (CNTs), entangled with N-doped carbon nanosheet nanocomposites (FexCoy-N-C), were prepared. The FexCoy-N-C materials presented an excellent ORR performance in alkaline medium. X-ray photoelectron spectroscopy (XPS) studies revealed the existence of ORR-active centers, such as Co-N-x, pyridinic-N and graphitic-N, which were responsible for the enhanced ORR activity. Besides, the synergistic coupling between FeCo alloy and N-doped carbon nanotubes favors the enhancement of the electrocatalytic performance. Among FexCoy-N-C electrocatalysts, the optimized Fe1Co3-N-C and Fe3Co1-N-C catalysts showed higher ORR performance. In addition, both Fe1Co3-N-C and Fe3Co1-N-C showed superior stability compared to the benchmark commercial Pt/C catalyst.

引用

页码：109 / 121

页数：13

共 73 条

[1] A highly active and durable iron/cobalt alloy catalyst encapsulated in N-doped graphitic carbon nanotubes for oxygen reduction reaction [J].