Dual Fe, Zn single atoms anchored on carbon nanotubes inlaid N, S-doped hollow carbon polyhedrons for boosting oxygen reduction reaction

被引:36
作者
Liu, Dawei [1 ]
Srinivas, Katam [1 ]
Chen, Xin [1 ]
Ma, Fei [1 ]
Zhang, Xiaojuan [1 ]
Wang, Xinqiang [1 ,3 ]
Wang, Bin [1 ]
Chen, Yuanfu [1 ,2 ,4 ]
机构
[1] Univ Elect Sci & Technol China, Sch Elect Sci & Engn, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Peoples R China
[2] Tibet Univ, Inst Oxygen Supply, Lhasa 850000, Peoples R China
[3] Xian Technol Univ, Inst Sci & Technol New Energy, Xian 710021, Peoples R China
[4] Tibet Univ, Coll Sci, Lhasa 850000, Peoples R China
基金
中国博士后科学基金; 中国国家自然科学基金;
关键词
Dual-metal single-atom catalyst; Fe and Zn single atoms; Oxygen reduction reaction; S co-doped carbon materials; Hollow carbon polyhedrons; In-situ grown carbon nanotubes; CO;
D O I
10.1016/j.jcis.2022.05.167
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
It is still challengeable but significant to rationally develop dual-metal single-atom catalysts with rich accessible active sites and excellent intrinsic catalytic activity towards oxygen reduction reaction (ORR). Herein, we present a novel dual-metal single-atom catalyst, Fe and Zn single atoms homogenously anchored on carbon nanotubes inlaid N, S-doped hollow carbon polyhedrons (FeZn-NSC), synthesized by facile iron-salt impregnation and high-temperature pyrolysis for zeolitic imidazolate framework-8. Due to the synergistic effects of the hierarchical porous nanoarchitecture with high specific surface area (795.48 m(2) g(-1)), N, S co-doped hollow carbon polyhedrons, in-situ grown highly conductive carbon nanotubes, and high loading of dual-metal single-atoms of Fe (3.12 wt%) and Zn (3.71 wt%), the optimized FeZn-NSC delivers outstanding ORR performance with high half-wave potential of 0.87 V, low Tafel slope of 44.7 mV dec1, long-term durability, and strong tolerance of methanol crossover. This work provides a strategy to rationally design and facilely synthesize dual-metal single-atom catalysts with high ORR activity. (C) 2022 Elsevier Inc. All rights reserved.
引用
收藏
页码:680 / 690
页数:11
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