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Regulating non-precious transition metal nitrides bifunctional electrocatalysts through surface/interface nanoengineering for air-cathodes of Zn-air batteries

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Green Energy & Environment 2022年第1期7卷 16-34页

作者： Qixing Du Yanmei Gong Muhammad Arif Khan Daixin Ye Jianhui Fang Hongbin Zhao Jiujun Zhang Department of Chemistry&Institute for Sustainable Energy College of SciencesShanghai UniversityShanghai200444China Department of Physics College of SciencesShanghai UniversityShanghai200444China School of Material Science and Engineering Shanghai UniversityShanghai200444China

Zn-air batteries(ZABs),especially the secondary batteries,have engrossed a great interest because of its high specific energy,economical and high ***,due to the insufficient activity and stability of bifunctional electrocatalysts for air-cathode oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)processes,the practical application of rechargeable ZABs is seriously *** the effort of developing high active,stable and cost-effective electrocatalysts,transition metal nitrides(TMNs)have been regarded as the candidates due to their high conductivity,strong corrosion-resistance,and bifunctional catalytic *** this paper,the research progress in TMNs-based material as ORR and OER electrocatalysts for ZABs is discussed with respect to their synthesis,chemical/physical characterization,and performance validation/*** surface/interface nanoengineering strategies such as defect engineering,support binding,heteroatom introduction,crystal plane orientation,interface construction and small size effect,the physical and chemical properties of TMNs-based electrocatalysts are emphasized with respect to their structures/morphologies,composition,electrical conductivity,specific surface area,chemical stability and corrosion *** challenges of TMNs-based materials as bifunctional air-cathode electrocatalysts in practical application are evaluated,and numerous research guidelines to solve these problems are put forward for facilitating further research and development.

关键词： surface/interface nanoengineering Non-precious transition metal nitrides Zn-air batteries Oxygen reduction reaction Oxygen evolution reaction

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