{"title":"Molecular Catalysis Enables Fast Polyiodide Conversion for Exceptionally Long-Life Zinc–Iodine Batteries","authors":"Zihui Chen, Feifei Wang, Runlin Ma, Wanying Jiao, Deyuan Li, Ao Du, Zhijie Yan, Tianyu Yin, Xunjie Yin, Qiang Li, Xu Zhang*, Nianjun Yang, Zhen Zhou, Quan-Hong Yang* and Chunpeng Yang*, ","doi":"10.1021/acsenergylett.4c00992","DOIUrl":null,"url":null,"abstract":"<p >Zinc–iodine (Zn–I<sub>2</sub>) batteries hold great promise for high-performance, low-cost electrochemical energy storage, but their practical application faces thorny challenges associated with polyiodide shuttling and insufficient cycling stability. Herein, we propose molecular catalysis for long-life Zn–I<sub>2</sub> batteries, employing Hemin as an efficient and stable molecular catalyst. The Hemin molecules containing pentacoordinated iron sites significantly adsorb polyiodides, improve the conversion kinetics of iodine species, reduce triiodide concentration, and suppress polyiodide shuttling. Benefiting from molecular catalysis, the Zn–I<sub>2</sub> batteries demonstrate an exceptional cycling life, exceeding 62000 cycles with only 0.00052% decay per cycle while maintaining discharge voltage plateaus. The pivotal function of molecular catalysis in both the adsorption and conversion of polyiodide species shows its significant impact on improving the cycling lifespan of Zn–I<sub>2</sub> batteries toward long-life energy storage.</p>","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":null,"pages":null},"PeriodicalIF":19.3000,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Energy Letters ","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsenergylett.4c00992","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
Zinc–iodine (Zn–I2) batteries hold great promise for high-performance, low-cost electrochemical energy storage, but their practical application faces thorny challenges associated with polyiodide shuttling and insufficient cycling stability. Herein, we propose molecular catalysis for long-life Zn–I2 batteries, employing Hemin as an efficient and stable molecular catalyst. The Hemin molecules containing pentacoordinated iron sites significantly adsorb polyiodides, improve the conversion kinetics of iodine species, reduce triiodide concentration, and suppress polyiodide shuttling. Benefiting from molecular catalysis, the Zn–I2 batteries demonstrate an exceptional cycling life, exceeding 62000 cycles with only 0.00052% decay per cycle while maintaining discharge voltage plateaus. The pivotal function of molecular catalysis in both the adsorption and conversion of polyiodide species shows its significant impact on improving the cycling lifespan of Zn–I2 batteries toward long-life energy storage.
ACS Energy Letters Energy-Renewable Energy, Sustainability and the Environment
CiteScore
31.20
自引率
5.00%
发文量
469
审稿时长
1 months
期刊介绍:
ACS Energy Letters is a monthly journal that publishes papers reporting new scientific advances in energy research. The journal focuses on topics that are of interest to scientists working in the fundamental and applied sciences. Rapid publication is a central criterion for acceptance, and the journal is known for its quick publication times, with an average of 4-6 weeks from submission to web publication in As Soon As Publishable format.
ACS Energy Letters is ranked as the number one journal in the Web of Science Electrochemistry category. It also ranks within the top 10 journals for Physical Chemistry, Energy & Fuels, and Nanoscience & Nanotechnology.
The journal offers several types of articles, including Letters, Energy Express, Perspectives, Reviews, Editorials, Viewpoints and Energy Focus. Additionally, authors have the option to submit videos that summarize or support the information presented in a Perspective or Review article, which can be highlighted on the journal's website. ACS Energy Letters is abstracted and indexed in Chemical Abstracts Service/SciFinder, EBSCO-summon, PubMed, Web of Science, Scopus and Portico.