{"title":"稳定的4.2 V固态钠电池的各向同性脱膜设计","authors":"Yuan Liu, Huican Mao, Rui Bai, Suting Weng, Qiangqiang Zhang, Xiaohui Rong, Xiao Chen, Chu Zhang, Shuai Han, Feixiang Ding, Xuefeng Wang, Yaxiang Lu, Junmei Zhao, Fei Wei, Liquan Chen, Yong-Sheng Hu","doi":"10.1038/s41560-025-01857-y","DOIUrl":null,"url":null,"abstract":"<p>Side reactions between high-voltage cathodes and electrolytes remain a critical obstacle to the advancement of solid-state batteries—particularly for Na-ion systems—due to the higher Na<sup>+</sup>/Na redox potential. Despite recent extensive efforts, achieving a long cycle life is still challenging at the 4.2 V cut-off (versus Na<sup>+</sup>/Na). Here we design a room-temperature isotropic epitaxial growth to achieve a relatively uniform and dense metal–organic framework epilayer on Na<sub>3</sub>V<sub>2</sub>O<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>F surfaces. Despite using polyethylene oxide, a typical ether-based solid polymer electrolyte, the cathode with isotropic epilayer exhibits enhanced cycling performance at the 4.2 V cut-off (retaining up to 77.9% of its initial capacity after 1,500 cycles). Combining experimental measurements and theoretical analyses, the key factor governing isotropic epitaxial growth behaviour is explicitly elucidated. Furthermore, we develop a self-designed high-sensitivity characterization method, in situ linear sweep voltammetry coupled with gas chromatography–mass spectrometry, to elucidate the failure mechanism of polyethylene oxide on Na<sub>3</sub>V<sub>2</sub>O<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>F surfaces and and to reveal the excellent electrochemical stability of the isotropic epilayer. Interestingly, the universality of this approach has also been validated, highlighting its strong potential as an effective strategy for enabling high-energy-density batteries.</p>","PeriodicalId":19073,"journal":{"name":"Nature Energy","volume":"62 1","pages":""},"PeriodicalIF":60.1000,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Designing an isotropic epilayer for stable 4.2 V solid-state Na batteries\",\"authors\":\"Yuan Liu, Huican Mao, Rui Bai, Suting Weng, Qiangqiang Zhang, Xiaohui Rong, Xiao Chen, Chu Zhang, Shuai Han, Feixiang Ding, Xuefeng Wang, Yaxiang Lu, Junmei Zhao, Fei Wei, Liquan Chen, Yong-Sheng Hu\",\"doi\":\"10.1038/s41560-025-01857-y\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Side reactions between high-voltage cathodes and electrolytes remain a critical obstacle to the advancement of solid-state batteries—particularly for Na-ion systems—due to the higher Na<sup>+</sup>/Na redox potential. Despite recent extensive efforts, achieving a long cycle life is still challenging at the 4.2 V cut-off (versus Na<sup>+</sup>/Na). Here we design a room-temperature isotropic epitaxial growth to achieve a relatively uniform and dense metal–organic framework epilayer on Na<sub>3</sub>V<sub>2</sub>O<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>F surfaces. Despite using polyethylene oxide, a typical ether-based solid polymer electrolyte, the cathode with isotropic epilayer exhibits enhanced cycling performance at the 4.2 V cut-off (retaining up to 77.9% of its initial capacity after 1,500 cycles). Combining experimental measurements and theoretical analyses, the key factor governing isotropic epitaxial growth behaviour is explicitly elucidated. Furthermore, we develop a self-designed high-sensitivity characterization method, in situ linear sweep voltammetry coupled with gas chromatography–mass spectrometry, to elucidate the failure mechanism of polyethylene oxide on Na<sub>3</sub>V<sub>2</sub>O<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>F surfaces and and to reveal the excellent electrochemical stability of the isotropic epilayer. Interestingly, the universality of this approach has also been validated, highlighting its strong potential as an effective strategy for enabling high-energy-density batteries.</p>\",\"PeriodicalId\":19073,\"journal\":{\"name\":\"Nature Energy\",\"volume\":\"62 1\",\"pages\":\"\"},\"PeriodicalIF\":60.1000,\"publicationDate\":\"2025-09-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nature Energy\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://doi.org/10.1038/s41560-025-01857-y\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENERGY & FUELS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nature Energy","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1038/s41560-025-01857-y","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
Designing an isotropic epilayer for stable 4.2 V solid-state Na batteries
Side reactions between high-voltage cathodes and electrolytes remain a critical obstacle to the advancement of solid-state batteries—particularly for Na-ion systems—due to the higher Na+/Na redox potential. Despite recent extensive efforts, achieving a long cycle life is still challenging at the 4.2 V cut-off (versus Na+/Na). Here we design a room-temperature isotropic epitaxial growth to achieve a relatively uniform and dense metal–organic framework epilayer on Na3V2O2(PO4)2F surfaces. Despite using polyethylene oxide, a typical ether-based solid polymer electrolyte, the cathode with isotropic epilayer exhibits enhanced cycling performance at the 4.2 V cut-off (retaining up to 77.9% of its initial capacity after 1,500 cycles). Combining experimental measurements and theoretical analyses, the key factor governing isotropic epitaxial growth behaviour is explicitly elucidated. Furthermore, we develop a self-designed high-sensitivity characterization method, in situ linear sweep voltammetry coupled with gas chromatography–mass spectrometry, to elucidate the failure mechanism of polyethylene oxide on Na3V2O2(PO4)2F surfaces and and to reveal the excellent electrochemical stability of the isotropic epilayer. Interestingly, the universality of this approach has also been validated, highlighting its strong potential as an effective strategy for enabling high-energy-density batteries.
Nature EnergyEnergy-Energy Engineering and Power Technology
CiteScore
75.10
自引率
1.10%
发文量
193
期刊介绍:
Nature Energy is a monthly, online-only journal committed to showcasing the most impactful research on energy, covering everything from its generation and distribution to the societal implications of energy technologies and policies.
With a focus on exploring all facets of the ongoing energy discourse, Nature Energy delves into topics such as energy generation, storage, distribution, management, and the societal impacts of energy technologies and policies. Emphasizing studies that push the boundaries of knowledge and contribute to the development of next-generation solutions, the journal serves as a platform for the exchange of ideas among stakeholders at the forefront of the energy sector.
Maintaining the hallmark standards of the Nature brand, Nature Energy boasts a dedicated team of professional editors, a rigorous peer-review process, meticulous copy-editing and production, rapid publication times, and editorial independence.
In addition to original research articles, Nature Energy also publishes a range of content types, including Comments, Perspectives, Reviews, News & Views, Features, and Correspondence, covering a diverse array of disciplines relevant to the field of energy.