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A FeCo/DA@NC catalyst with the well‐defined FeCoN6 moiety is customized through a novel and ultrafast Joule heating technique. This catalyst demonstrates superior oxygen reduction reaction activity and stability in an alkaline environment. The power density and charge–discharge cycling of znic–air batteries driven by FeCo/DA@NC also surpass those of Pt/C catalyst. The source of the excellent oxygen...
The development of cerium (Ce) single‐atom (SA) electrocatalysts for oxygen reduction reaction (ORR) with high active‐site utilization and intrinsic activity has become popular recently but remains challenging. Inspired by an interesting phenomenon that pore‐coupling with single‐metal cerium sites can accelerate the electron transfer predicted by density functional theory calculations, here, a facile...
Electrocatalytic Oxygen Reduction
In article number 2207991, Cheng‐Yan Xu and co‐workers develop a self‐sacrificing strategy to encapsulate single‐atom Fe‐N4O1 species into carbon hollow spheres assembled by ultrathin nanosheets Fe1–N–C hollow microspheres (Fe1/N‐HCMs). Such highly open architecture is supposed to be an ideal platform to isolate and fully expose single metal atoms. Benifiting from...
Single‐atom Fe–N–C (Fe1–N–C) materials represent the benchmarked electrocatalysts for oxygen reduction reaction (ORR). However, single Fe atoms in the carbon skeletons cannot be fully utilized due to the mass transfer limitation, severely restricting their intrinsic ORR properties. Herein, a self‐sacrificing template strategy is developed to fabricate ultrathin nanosheets assembled Fe1–N–C hollow...
Zinc–air batteries (ZABs) exhibit high energy density as well as flexibility, safety, and portability, thereby fulfilling the requirements of power batteries and consumer batteries. However, the limited efficiency and stability are still the significant challenge. Oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are two crucial cathode reactions in ZABs. Development of bifunctional...
Bifunctional oxygen electrocatalyst: A metal–amino acid complex is developed to prepare high‐performance mesoporous carbon electrocatalyst for both oxygen reduction and oxygen evolution reactions. Such prepared catalyst can be used to assemble rechargeable zinc–air batteries with excellent durability. This work represents a new route toward low‐cost, highly active, and durable bifunctional electrocatalysts...
A one‐step soft‐template induced strategy is demonstrated for the controlled synthesis of nitrogen‐enriched core–shell structured cobalt−carbon nanoparticles (NPs) sequentially aligned on wrinkles of N‐doped carbon nanosheets (Co‐C@NWCs). The key feature of Co‐C@NWCs for ORR catalysis enhancement is that it combines high catalytic centers of Co‐C core–shell NPs with the wrinkle of carbon nanosheets...
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