Enhanced Bifunctional Oxygen Electrocatalysis by Synergistic Active Heterostructure Design

IF 26 1区材料科学 Q1 CHEMISTRY, PHYSICAL

Advanced Energy Materials Pub Date : 2025-07-02 DOI:10.1002/aenm.202502493

Taotao Li, Bingchen Liu, Haotian Guo, Pengfei Wang, Zonglin Liu, Qinzhi Lai, Qianyu Zhang, Ting‐Feng Yi

{"title":"Enhanced Bifunctional Oxygen Electrocatalysis by Synergistic Active Heterostructure Design","authors":"Taotao Li, Bingchen Liu, Haotian Guo, Pengfei Wang, Zonglin Liu, Qinzhi Lai, Qianyu Zhang, Ting‐Feng Yi","doi":"10.1002/aenm.202502493","DOIUrl":null,"url":null,"abstract":"Due to the slower kinetics and different reaction requirements of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), it is challenging to balance between the two reaction properties. In this work, CoFe2O4/Co heterostructure are designed by in situ loading of carbon dots (CDs) ‐mediated metal sites onto porous carbon sphere substrates (CSs) to achieve highly durable bifunctional catalysts (FeCoCDs/CSs). Experimental and theoretical calculations demonstrate that the strong metalcarrier interaction interface promotes dynamic electron transfer between CoFe2O4 and Co, improves electronic conductivity, and enhances the stability of FeCoCDs/CSs catalysts. CDs effectively regulate the electronic environment of the active sites of Co, optimize the adsorption behavior of O*/OH*, and promote the release of final products. The designed FeCoCDs/CSs exhibit excellent ORR/OER performance with an oxygen potential difference (ΔE) of 0.635 V. Liquid zinc‐air batteries (ZABs) with FeCoCDs/CSs show outstanding cycling stability (ΔE) of 0.635 V) and high round‐trip efficiency (64.7%). The flexible ZABs (FZABs) with FeCoCDs/CS also deliver excellent cycling stability over a wide temperature range (60–‐40 °C), demonstrating its ruggedness and suitability for practical applications under various environmental conditions.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"150 1","pages":""},"PeriodicalIF":26.0000,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Energy Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/aenm.202502493","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Due to the slower kinetics and different reaction requirements of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), it is challenging to balance between the two reaction properties. In this work, CoFe2O4/Co heterostructure are designed by in situ loading of carbon dots (CDs) ‐mediated metal sites onto porous carbon sphere substrates (CSs) to achieve highly durable bifunctional catalysts (FeCoCDs/CSs). Experimental and theoretical calculations demonstrate that the strong metalcarrier interaction interface promotes dynamic electron transfer between CoFe2O4 and Co, improves electronic conductivity, and enhances the stability of FeCoCDs/CSs catalysts. CDs effectively regulate the electronic environment of the active sites of Co, optimize the adsorption behavior of O*/OH*, and promote the release of final products. The designed FeCoCDs/CSs exhibit excellent ORR/OER performance with an oxygen potential difference (ΔE) of 0.635 V. Liquid zinc‐air batteries (ZABs) with FeCoCDs/CSs show outstanding cycling stability (ΔE) of 0.635 V) and high round‐trip efficiency (64.7%). The flexible ZABs (FZABs) with FeCoCDs/CS also deliver excellent cycling stability over a wide temperature range (60–‐40 °C), demonstrating its ruggedness and suitability for practical applications under various environmental conditions.

查看原文本刊更多论文

增效活性异质结构设计增强双功能氧电催化

由于氧还原反应（ORR）和析氧反应（OER）的反应动力学较慢，反应要求不同，因此很难在两种反应性质之间取得平衡。在这项工作中，CoFe2O4/Co异质结构是通过在多孔碳球衬底（CSs）上原位加载碳点（CDs）介导的金属位点来设计的，以获得高度耐用的双功能催化剂（FeCoCDs/CSs）。实验和理论计算表明，强金属载流子相互作用界面促进了CoFe2O4和Co之间的动态电子传递，提高了电子导电性，增强了FeCoCDs/CSs催化剂的稳定性。CDs有效调节Co活性位点的电子环境，优化O*/OH*的吸附行为，促进最终产物的释放。所设计的fecocd /CSs具有优异的ORR/OER性能，氧电位差（ΔE）为0.635 V。含有FeCoCDs/CSs的液态锌-空气电池（ZABs）具有出色的循环稳定性（ΔE），为0.635 V)和高往返效率（64.7%）。具有fecocd /CS的柔性ZABs （FZABs）在宽温度范围（60 -‐40°C）内也具有出色的循环稳定性，证明了其坚固性和在各种环境条件下的实际应用适用性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Advanced Energy Materials CHEMISTRY, PHYSICAL-ENERGY & FUELS

CiteScore

41.90

自引率

4.00%

发文量

889

审稿时长

1.4 months

期刊介绍： Established in 2011, Advanced Energy Materials is an international, interdisciplinary, English-language journal that focuses on materials used in energy harvesting, conversion, and storage. It is regarded as a top-quality journal alongside Advanced Materials, Advanced Functional Materials, and Small. With a 2022 Impact Factor of 27.8, Advanced Energy Materials is considered a prime source for the best energy-related research. The journal covers a wide range of topics in energy-related research, including organic and inorganic photovoltaics, batteries and supercapacitors, fuel cells, hydrogen generation and storage, thermoelectrics, water splitting and photocatalysis, solar fuels and thermosolar power, magnetocalorics, and piezoelectronics. The readership of Advanced Energy Materials includes materials scientists, chemists, physicists, and engineers in both academia and industry. The journal is indexed in various databases and collections, such as Advanced Technologies & Aerospace Database, FIZ Karlsruhe, INSPEC (IET), Science Citation Index Expanded, Technology Collection, and Web of Science, among others.