N, S co-doped carbon with embedment of FeNi alloy as bifunctional oxygen electrocatalysts for rechargeable Zinc-air batteries

被引：30
作者：
Wu, Run [1 ]
Wang, Xixi [1 ]
Ge, Lei [3 ,4 ]
Zheng, Zehao [1 ]
Zhu, Yijun [1 ]
Zhou, Chuan [1 ]
Yuan, Jinglin [1 ]
Zhu, Shiliang [1 ]
Gu, Yuxing [1 ]
Zhou, Wei [1 ]
Shao, Zongping [1 ,2 ]
机构：
[1] Nanjing Tech Univ, Coll Chem Engn, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Peoples R China
[2] Curtin Univ, Dept Chem Engn, Perth 6845, Australia
[3] Univ Southern Queensland, Ctr Future Mat, Springfield 4300, Australia
[4] Univ Queensland, Sch Chem Engn, St Lucia 4072, Australia
来源：
CARBON | 2023年 / 202卷
关键词：
FeNi alloy; S co -doped carbon; Bifunctional electrocatalyst; Zinc -air batteries; N; EVOLUTION REACTION; POROUS CARBON; REDUCTION REACTION; NITROGEN; CATALYSTS; NANOPARTICLES; PERFORMANCE; NANOSTRUCTURES; NANOSHEETS; NETWORKS;
D O I：
10.1016/j.carbon.2022.10.047
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：
Zinc-air batteries (ZABs) have sparked great interest, but their wide-ranging applications are limited by sluggish cathode reactions (ORR and OER). In this work, a multifunctional 3D catalyst (FeNi alloy/porous carbon) was easily fabricated by introducing Fe3+ and Ni2+ to modulate in-situ vapor phase grown carbon nanotubes. The as -prepared catalyst FNSNC73-800 displays abundant mesoporous, massive structural defects, and multiple active sites, which greatly facilitate the transport of oxygen species and charge transfer during the reaction. Due to the excellent ORR and OER performance, FNSNC73-800 shows a narrow voltage gap (Delta E) of 0.76 V, which is su-perior to recent reports. Notably, the secondary zinc-air battery with this catalyst displays a high-peak power density (210 mW cm-2), while maintaining an ultra-low potential gap (0.74 V) after a long-term charge -discharge cycle of 200 h. This effort presents a facile strategy for designing economical and efficient 3D catalysts for zinc-air batteries and more energy devices.
引用
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页码：141 / 149
页数：9
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