气候变化领域集成服务门户(CCPortal): Robust wrinkled MoS2/N-C bifunctional electrocatalysts interfaced with single Fe atoms for wearable zinc-air batteries

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DOI	10.1073/pnas.2110036118
	Robust wrinkled MoS2/N-C bifunctional electrocatalysts interfaced with single Fe atoms for wearable zinc-air batteries
	Yan Y.; Liang S.; Wang X.; Zhang M.; Hao S.-M.; Cui X.; Li Z.; Lin Z.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:40
英文摘要	The ability to create highly efficient and stable bifunctional electrocatalysts, capable of oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) in the same electrolyte, represents an important endeavor toward high-performance zinc-air batteries (ZABs). Herein, we report a facile strategy for crafting wrinkled MoS2/N-doped carbon core/shell nanospheres interfaced with single Fe atoms (denoted MoS2@Fe-N-C) as superior ORR/OER bifunctional electrocatalysts for robust wearable ZABs with a high capacity and outstanding cycling stability. Specifically, the highly crumpled MoS2 nanosphere core is wrapped with a layer of single-Fe-atom-impregnated, N-doped carbon shell (i.e., Fe-N-C shell with well-dispersed FeN4 sites). Intriguingly, MoS2@Fe-N-C nanospheres manifest an ORR half-wave potential of 0.84 V and an OER overpotential of 360 mV at 10 mA·cm−2. More importantly, density functional theory calculations reveal the lowered energy barriers for both ORR and OER, accounting for marked enhanced catalytic performance of MoS2@Fe-N-C nanospheres. Remarkably, wearable ZABs assembled by capitalizing on MoS2@Fe-N-C nanospheres as an air electrode with an ultralow area loading (i.e., 0.25 mg·cm−2) display excellent stability against deformation, high special capacity (i.e., 442 mAh·g−1Zn), excellent power density (i.e., 78 mW·cm−2) and attractive cycling stability (e.g., 50 cycles at current density of 5 mA·cm−2). This study provides a platform to rationally design single-atom-interfaced core/shell bifunctional electrocatalysts for efficient metal-air batteries. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Bifunctional electrocatalysts; MoS2 nanospheres; ORR/OER; Single Fe atoms; Zinc-air batteries
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238350
作者单位	School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States; School of Chemistry and Materials Science, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou, 221116, China; Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States; Shenzhen Cloud Computing Center, National Supercomputing Center, Shenzhen, 518055, China
推荐引用方式 GB/T 7714	Yan Y.,Liang S.,Wang X.,et al. Robust wrinkled MoS2/N-C bifunctional electrocatalysts interfaced with single Fe atoms for wearable zinc-air batteries[J],2021,118(40).
APA	Yan Y..,Liang S..,Wang X..,Zhang M..,Hao S.-M..,...&Lin Z..(2021).Robust wrinkled MoS2/N-C bifunctional electrocatalysts interfaced with single Fe atoms for wearable zinc-air batteries.Proceedings of the National Academy of Sciences of the United States of America,118(40).
MLA	Yan Y.,et al."Robust wrinkled MoS2/N-C bifunctional electrocatalysts interfaced with single Fe atoms for wearable zinc-air batteries".Proceedings of the National Academy of Sciences of the United States of America 118.40(2021).