Star-shaped ZIF-derived carbon-based electrocatalysts with FeNX active sites for enhanced oxygen reduction reaction in high-performance zinc-air batteries

IF 4.1 3区化学 Q1 CHEMISTRY, ANALYTICAL Journal of Electroanalytical Chemistry Pub Date : 2025-03-01 Epub Date: 2025-02-04 DOI:10.1016/j.jelechem.2025.118991

Shuo Tian , Shang Wu , Jincai Yang , Jiankun Li , Chaoyang Liu , Jiali Shi , Xiaoming Xiang , Lihong Wang , Yuzhi Sun , Quanlu Yang

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Abstract

A star-shaped Oxygen reduction reaction (ORR) catalyst, Fe-NSC-2, with the growth of carbon nanotubes is prepared. Nitrogen-rich iron phthalocyanine (FePc) is successfully doped into a zeolite imidazolate framework (ZIF-8) by the grinding and pyrolysis methods. Doping FePc into ZIF-8, utilizing its nitrogen ligands and macrocyclic structure, enhances metal dispersion and reinforces the metal-nitrogen (Fe-N_X) configuration. Additionally, this arrangement promotes the graphitization of the three-dimensional porous carbon following pyrolysis. Unexpectedly, the synthesized Fe-NSC-2 catalyst is found to exhibit excellent ORR electrocatalytic activity in alkaline solutions compared to Pt/C. The Zinc-air batteries (ZAB), in which Fe-NSC-2 is employed as the air cathode, is found to exhibit remarkable performance and stability. This provides an economically viable preparation strategy for exploring efficient catalysts for the ORR.

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具有FeNX活性位点的星形zif衍生碳基电催化剂用于增强高性能锌空气电池中的氧还原反应

制备了具有碳纳米管生长的星形氧还原反应（ORR）催化剂Fe-NSC-2。采用研磨法和热解法成功地将富氮酞菁铁（FePc）掺杂到咪唑酸分子筛骨架（ZIF-8）中。在ZIF-8中掺杂FePc，利用其氮配体和大环结构增强了金属的分散性，强化了金属-氮（Fe-NX）构型。此外，这种排列促进了三维多孔碳在热解后的石墨化。出乎意料的是，与Pt/C相比，合成的Fe-NSC-2催化剂在碱性溶液中表现出优异的ORR电催化活性。以Fe-NSC-2为空气阴极的锌空气电池（ZAB）表现出优异的性能和稳定性。这为探索高效的ORR催化剂提供了经济可行的制备策略。

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来源期刊

Journal of Electroanalytical Chemistry 化学-电化学

CiteScore

7.80

自引率

6.70%

发文量

912

审稿时长

2.4 months

期刊介绍： The Journal of Electroanalytical Chemistry is the foremost international journal devoted to the interdisciplinary subject of electrochemistry in all its aspects, theoretical as well as applied. Electrochemistry is a wide ranging area that is in a state of continuous evolution. Rather than compiling a long list of topics covered by the Journal, the editors would like to draw particular attention to the key issues of novelty, topicality and quality. Papers should present new and interesting electrochemical science in a way that is accessible to the reader. The presentation and discussion should be at a level that is consistent with the international status of the Journal. Reports describing the application of well-established techniques to problems that are essentially technical will not be accepted. Similarly, papers that report observations but fail to provide adequate interpretation will be rejected by the Editors. Papers dealing with technical electrochemistry should be submitted to other specialist journals unless the authors can show that their work provides substantially new insights into electrochemical processes.