Enhanced oxygen reduction with single-atomic-site iron catalysts for a zinc-air battery and hydrogen-air fuel cell
Yuanjun Chen,Shufang Ji,Shu Zhao,Wenxing Chen,Juncai Dong,Weng-Chon Cheong,Rongan Shen,Xiaodong Wen,Lirong Zheng,Alexandre I. Rykov,Shichang Cai,Haolin Tang,Zhongbin Zhuang,Chen Chen,Qing Peng,Dingsheng Wang,Yadong Li +16 more
TL;DR: Benefiting from structure functionalities and electronic control of a single-atom iron active center, the catalyst shows a remarkable performance with enhanced kinetics and activity for oxygen reduction in both alkaline and acid media and shows promise for substitution of expensive platinum to drive the cathodic oxygen reduction reaction in zinc-air batteries and hydrogen-air fuel cells.
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Abstract: Efficient, durable and inexpensive electrocatalysts that accelerate sluggish oxygen reduction reaction kinetics and achieve high-performance are highly desirable. Here we develop a strategy to fabricate a catalyst comprised of single iron atomic sites supported on a nitrogen, phosphorus and sulfur co-doped hollow carbon polyhedron from a metal-organic framework@polymer composite. The polymer-based coating facilitates the construction of a hollow structure via the Kirkendall effect and electronic modulation of an active metal center by long-range interaction with sulfur and phosphorus. Benefiting from structure functionalities and electronic control of a single-atom iron active center, the catalyst shows a remarkable performance with enhanced kinetics and activity for oxygen reduction in both alkaline and acid media. Moreover, the catalyst shows promise for substitution of expensive platinum to drive the cathodic oxygen reduction reaction in zinc-air batteries and hydrogen-air fuel cells.
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Citations
Super-assembled compressible carbon frameworks featuring enriched heteroatom defect sites for flexible Zn–air batteries
Huaipeng Pang,Meng Wang,Peipei Sun,Wenshuai Zhang,Dan Wang,Runhao Zhang,Li Qiao,Meng Gao,Yong Li,Jiang-Lei Chen,Kang Liang,Biao Kong +11 more
TL;DR: In this paper , the authors developed a superassembly strategy for the preparation of N, S-codoped porous carbon frameworks (NS@CFs) as cathodes in flexible Zn-air batteries.
Metal–organic framework-derived single-atom catalysts for electrocatalytic energy conversion applications
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TL;DR: Metal-organic framework-derived single-atom catalysts exhibit enhanced electrocatalytic performance for energy conversion applications, revolutionizing the field with improved efficiency, stability, and selectivity, offering promising solutions for sustainable energy production and storage.
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