An efficient dual-metal single-atom catalyst for bifunctional catalysis in zinc-air batteries

Ma, Yiou; Fan, Haiyun; Wu, Chao; Zhang, Mingdao; Yu, Jianguo; Song, Li; Li, Kuiran; He, Jie

doi:10.1016/j.carbon.2021.09.044

Cited by 84 publications

(49 citation statements)

References 48 publications

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“…To this end, the development of high‐performance bifunctional catalyst materials has become a hot research topic 17‐19 . A series of novel electrocatalysts with excellent intrinsic ORR/OER activity have been proposed, such as noble‐metal‐based catalysts, carbon‐based materials, transition metal oxides, and hybrids of these materials 20‐22 . For example, Li et al designed a novel Co species/N‐doped carbon electrocatalysts, exhibiting a high onset potential −0.12 V (vs SCE) and long‐term stability in the alkaline situation 23 .…”

Section: Introductionmentioning

confidence: 99%

“…[17][18][19] A series of novel electrocatalysts with excellent intrinsic ORR/OER activity have been proposed, such as noble-metal-based catalysts, carbon-based materials, transition metal oxides, and hybrids of these materials. [20][21][22] For example, Li et al designed a novel Co species/N-doped carbon electrocatalysts, exhibiting a high onset potential À0.12 V (vs SCE) and long-term stability in the alkaline situation. 23 Fu et al developed a novel porous FeCo glassy alloy as the bifunctional catalytic support.…”

Section: Introductionmentioning

confidence: 99%

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Revealing the effects of conductive carbon materials on the cycling stability of rechargeable Zn‐air batteries

Zhao

Shang

et al. 2022

Intl J of Energy Research

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Summary Rechargeable zinc‐air batteries (RZABs) are considered to be one of the promising electrochemical energy sources, and considerable efforts are devoted to high‐performance bifunctional catalysts. Since the conductivity of catalysts is usually unsatisfactory, conductive carbon materials are needed in electrodes to provide the electron pathway. However, the effects of conductive carbon materials on the cycling stability of RZABs are usually overlooked. Herein, this topic is comprehensively investigated combing the electrochemical testes, in‐situ oxygen monitor during charging, and characterization of the electrodes and electrolytes. Three kinds of electrodes made of bi‐functional catalysts without additional carbon (N/A) and with Vulcan carbon (VC) and carbon nanotubes (CNT) are taken as examples. The results show that the CNT‐based electrode releases the most oxygen under the same charging current density, which is 1.43 times that of the VC‐based electrode and exhibits high stability in terms of voltage profile, structure morphology, and surface state. In addition, carbon corrosion is a serious issue for RZABs, which not only decreases the oxygen releasing efficiency but also contaminates the electrolyte. This work demonstrates the significant roles of conductive carbon materials in cycling stability and indicates that the in‐situ gas analysis is essential to more rigorously evaluate the charging performance of RZABs.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Revealing the effects of conductive carbon materials on the cycling stability of rechargeable Zn‐air batteries

Zhao

Shang

et al. 2022

Intl J of Energy Research

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“… 76 Nitrogen can be easily doped into the carbon matrix owing to the similarity of the atomic radius of the nitrogen and carbon atoms when the nitrogen-based precursors such as dicyandiamide (CH 4 N 4 ), urea (CH 4 N 2 O), and melamine (C 3 H 6 N 6 ) in an inert atmosphere were pyrolyzed. 77 Also, nitrogen has higher electronegativity (3.04) than that of carbon (2.55), which can facilitate the positively-charged neighboring carbon atoms by electron transfer from carbon to nitrogen. 77 …”

Section: Design Of Electrocatalysts For Zabsmentioning

confidence: 99%

“… 77 Also, nitrogen has higher electronegativity (3.04) than that of carbon (2.55), which can facilitate the positively-charged neighboring carbon atoms by electron transfer from carbon to nitrogen. 77 …”

Section: Design Of Electrocatalysts For Zabsmentioning

confidence: 99%

Material design and surface chemistry for advanced rechargeable zinc–air batteries

et al. 2022

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“…Intriguingly, carbon materials can serve as conductive skeletons and active components of bifunctional catalysts through effective modifications, such as heteroatoms doping into carbon lattice, manufacturing defects, and hybridization with other active species [47]. When carbon materials are doped with TM atoms, they possess both high electrical conductivity of carbon materials and high intrinsic activity of metalbased active sites [48][49][50]. Furthermore, the TMs in such catalysts can also significantly improve the graphitization of carbon materials, providing them with excellent protection from corrosion and accumulation during electrochemical reactions [23,51].…”

Section: Introductionmentioning

confidence: 99%

Atomically Dispersed Transition Metal-Nitrogen-Carbon Bifunctional Oxygen Electrocatalysts for Zinc-Air Batteries: Recent Advances and Future Perspectives

et al. 2021

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Rechargeable zinc-air batteries (ZABs) are currently receiving extensive attention because of their extremely high theoretical specific energy density, low manufacturing costs, and environmental friendliness. Exploring bifunctional catalysts with high activity and stability to overcome sluggish kinetics of oxygen reduction reaction and oxygen evolution reaction is critical for the development of rechargeable ZABs. Atomically dispersed metal-nitrogen-carbon (M-N-C) catalysts possessing prominent advantages of high metal atom utilization and electrocatalytic activity are promising candidates to promote oxygen electrocatalysis. In this work, general principles for designing atomically dispersed M-N-C are reviewed. Then, strategies aiming at enhancing the bifunctional catalytic activity and stability are presented. Finally, the challenges and perspectives of M-N-C bifunctional oxygen catalysts for ZABs are outlined. It is expected that this review will provide insights into the targeted optimization of atomically dispersed M-N-C catalysts in rechargeable ZABs.

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An efficient dual-metal single-atom catalyst for bifunctional catalysis in zinc-air batteries

Cited by 84 publications

References 48 publications

Revealing the effects of conductive carbon materials on the cycling stability of rechargeable Zn‐air batteries

Revealing the effects of conductive carbon materials on the cycling stability of rechargeable Zn‐air batteries

Material design and surface chemistry for advanced rechargeable zinc–air batteries

Atomically Dispersed Transition Metal-Nitrogen-Carbon Bifunctional Oxygen Electrocatalysts for Zinc-Air Batteries: Recent Advances and Future Perspectives

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