{"title":"克服多阴离子阴极的动力学限制,实现高性能钠离子电池。","authors":"Chunliu Xu, Qiang Fu, Weibo Hua, Zhao Chen, Qinghua Zhang, Ying Bai, Chao Yang, Junmei Zhao* and Yong-Sheng Hu, ","doi":"10.1021/acsnano.4c06510","DOIUrl":null,"url":null,"abstract":"<p >Polyanionic cathodes have attracted extensive research interest for Na-ion batteries (NIBs) due to their moderate energy density and desirable cycling stability. However, these compounds suffer from visible capacity fading and significant voltage decay upon the rapid sodium storage process, even if modified through nanoengineering or carbon-coating routes, leading to limited applications in NIBs. Herein, the Na<sub>3</sub>(VOPO<sub>4</sub>)<sub>2</sub>F cathode material with dominantly exposed {001} active facets is demonstrated by a topochemical synthesis route. Owing to the rational geometrical structure design and thereby directly shortening Na diffusion distance, the electrode delivers a reversible capacity of ∼129 mA h g<sup>–1</sup> even at a high rate of 10 C, which is very close to the theoretical capacity of 132 mA h g<sup>–1</sup>, achieving a high energy density of ∼452 W h kg<sup>–1</sup> coupled with a high-power density of 4660 W kg<sup>–1</sup>. When further served as a cathode for nonaqueous, aqueous-based, and solid-state full NIBs, respectively, our designed Na<sub>3</sub>(VOPO<sub>4</sub>)<sub>2</sub>F always enables superior electrochemical performance due to favorable kinetics.</p>","PeriodicalId":21,"journal":{"name":"ACS Nano","volume":null,"pages":null},"PeriodicalIF":15.8000,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Overcoming Kinetic Limitations of Polyanionic Cathode toward High-Performance Na-Ion Batteries\",\"authors\":\"Chunliu Xu, Qiang Fu, Weibo Hua, Zhao Chen, Qinghua Zhang, Ying Bai, Chao Yang, Junmei Zhao* and Yong-Sheng Hu, \",\"doi\":\"10.1021/acsnano.4c06510\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Polyanionic cathodes have attracted extensive research interest for Na-ion batteries (NIBs) due to their moderate energy density and desirable cycling stability. However, these compounds suffer from visible capacity fading and significant voltage decay upon the rapid sodium storage process, even if modified through nanoengineering or carbon-coating routes, leading to limited applications in NIBs. Herein, the Na<sub>3</sub>(VOPO<sub>4</sub>)<sub>2</sub>F cathode material with dominantly exposed {001} active facets is demonstrated by a topochemical synthesis route. Owing to the rational geometrical structure design and thereby directly shortening Na diffusion distance, the electrode delivers a reversible capacity of ∼129 mA h g<sup>–1</sup> even at a high rate of 10 C, which is very close to the theoretical capacity of 132 mA h g<sup>–1</sup>, achieving a high energy density of ∼452 W h kg<sup>–1</sup> coupled with a high-power density of 4660 W kg<sup>–1</sup>. When further served as a cathode for nonaqueous, aqueous-based, and solid-state full NIBs, respectively, our designed Na<sub>3</sub>(VOPO<sub>4</sub>)<sub>2</sub>F always enables superior electrochemical performance due to favorable kinetics.</p>\",\"PeriodicalId\":21,\"journal\":{\"name\":\"ACS Nano\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":15.8000,\"publicationDate\":\"2024-07-04\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Nano\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acsnano.4c06510\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Nano","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsnano.4c06510","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
摘要
聚阴离子阴极具有适中的能量密度和理想的循环稳定性,因此在钠离子电池(NIB)领域引起了广泛的研究兴趣。然而,这些化合物在快速储钠过程中会出现明显的容量衰减和显著的电压衰减,即使通过纳米工程或碳涂层方法对其进行改性也是如此,导致其在 NIB 中的应用受到限制。本文通过拓扑化学合成路线,展示了具有主要暴露{001}活性面的 Na3(VOPO4)2F 阴极材料。由于合理的几何结构设计,从而直接缩短了 Na 的扩散距离,该电极在 10 C 的高倍率下仍能提供 ∼129 mA h g-1 的可逆容量,非常接近 132 mA h g-1 的理论容量,实现了 ∼452 W h kg-1 的高能量密度和 4660 W kg-1 的高功率密度。当我们设计的 Na3(VOPO4)2F 分别进一步用作非水、水基和固态全 NIB 的阴极时,由于其良好的动力学特性,总能实现优异的电化学性能。
Overcoming Kinetic Limitations of Polyanionic Cathode toward High-Performance Na-Ion Batteries
Polyanionic cathodes have attracted extensive research interest for Na-ion batteries (NIBs) due to their moderate energy density and desirable cycling stability. However, these compounds suffer from visible capacity fading and significant voltage decay upon the rapid sodium storage process, even if modified through nanoengineering or carbon-coating routes, leading to limited applications in NIBs. Herein, the Na3(VOPO4)2F cathode material with dominantly exposed {001} active facets is demonstrated by a topochemical synthesis route. Owing to the rational geometrical structure design and thereby directly shortening Na diffusion distance, the electrode delivers a reversible capacity of ∼129 mA h g–1 even at a high rate of 10 C, which is very close to the theoretical capacity of 132 mA h g–1, achieving a high energy density of ∼452 W h kg–1 coupled with a high-power density of 4660 W kg–1. When further served as a cathode for nonaqueous, aqueous-based, and solid-state full NIBs, respectively, our designed Na3(VOPO4)2F always enables superior electrochemical performance due to favorable kinetics.
期刊介绍:
ACS Nano, published monthly, serves as an international forum for comprehensive articles on nanoscience and nanotechnology research at the intersections of chemistry, biology, materials science, physics, and engineering. The journal fosters communication among scientists in these communities, facilitating collaboration, new research opportunities, and advancements through discoveries. ACS Nano covers synthesis, assembly, characterization, theory, and simulation of nanostructures, nanobiotechnology, nanofabrication, methods and tools for nanoscience and nanotechnology, and self- and directed-assembly. Alongside original research articles, it offers thorough reviews, perspectives on cutting-edge research, and discussions envisioning the future of nanoscience and nanotechnology.