{"title":"Design of a cationic accelerator enabling ultrafast ion diffusion kinetics in aqueous zinc-ion batteries","authors":"","doi":"10.1016/j.jechem.2024.09.002","DOIUrl":null,"url":null,"abstract":"<div><p>Aqueous zinc-ion batteries are highly favored for grid-level energy storage owing to their low cost and high safety, but their practical application is limited by slow ion migration. To address this, a strategy has been developed to create a cation-accelerating electric field on the surface of the cathode to achieve ultrafast Zn<sup>2+</sup> diffusion kinetics. By employing electrodeposition to coat MoS<sub>2</sub> on the surface of BaV<sub>6</sub>O<sub>16</sub>·3H<sub>2</sub>O nanowires, the directional built-in electric field generated at the heterointerface acts as a cation accelerator, continuously accelerating Zn<sup>2+</sup> diffusion into the active material. The optimized Zn<sup>2+</sup> diffusion coefficient in CC@BaV<sub>6</sub>O<sub>16</sub>·3H<sub>2</sub>O@MoS<sub>2</sub> (7.5 × 10<sup>−8</sup> cm<sup>2</sup> s<sup>−1</sup>) surpasses that of most reported V-based cathodes. Simultaneously, MoS<sub>2</sub> serving as a cathodic armor extends the cycling life of the Zn-CC@BaV<sub>6</sub>O<sub>16</sub>·3H<sub>2</sub>O@MoS<sub>2</sub> full batteries to over 10000 cycles. This work provides valuable insights into optimizing ion diffusion kinetics for high-performance energy storage devices.</p></div>","PeriodicalId":15728,"journal":{"name":"Journal of Energy Chemistry","volume":null,"pages":null},"PeriodicalIF":13.1000,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Energy Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S209549562400620X","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Energy","Score":null,"Total":0}
引用次数: 0
Abstract
Aqueous zinc-ion batteries are highly favored for grid-level energy storage owing to their low cost and high safety, but their practical application is limited by slow ion migration. To address this, a strategy has been developed to create a cation-accelerating electric field on the surface of the cathode to achieve ultrafast Zn2+ diffusion kinetics. By employing electrodeposition to coat MoS2 on the surface of BaV6O16·3H2O nanowires, the directional built-in electric field generated at the heterointerface acts as a cation accelerator, continuously accelerating Zn2+ diffusion into the active material. The optimized Zn2+ diffusion coefficient in CC@BaV6O16·3H2O@MoS2 (7.5 × 10−8 cm2 s−1) surpasses that of most reported V-based cathodes. Simultaneously, MoS2 serving as a cathodic armor extends the cycling life of the Zn-CC@BaV6O16·3H2O@MoS2 full batteries to over 10000 cycles. This work provides valuable insights into optimizing ion diffusion kinetics for high-performance energy storage devices.
期刊介绍:
The Journal of Energy Chemistry, the official publication of Science Press and the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, serves as a platform for reporting creative research and innovative applications in energy chemistry. It mainly reports on creative researches and innovative applications of chemical conversions of fossil energy, carbon dioxide, electrochemical energy and hydrogen energy, as well as the conversions of biomass and solar energy related with chemical issues to promote academic exchanges in the field of energy chemistry and to accelerate the exploration, research and development of energy science and technologies.
This journal focuses on original research papers covering various topics within energy chemistry worldwide, including:
Optimized utilization of fossil energy
Hydrogen energy
Conversion and storage of electrochemical energy
Capture, storage, and chemical conversion of carbon dioxide
Materials and nanotechnologies for energy conversion and storage
Chemistry in biomass conversion
Chemistry in the utilization of solar energy