Two-pronged approach: Utilizing a 3D microfloral structure of V10O24·nH2O with abundant oxygen vacancies and structural water for aqueous zinc ion batteries
{"title":"Two-pronged approach: Utilizing a 3D microfloral structure of V10O24·nH2O with abundant oxygen vacancies and structural water for aqueous zinc ion batteries","authors":"","doi":"10.1016/j.est.2024.114064","DOIUrl":null,"url":null,"abstract":"<div><div>Vanadium oxides with large layer spacing are regarded as suitable candidates for aqueous zinc ion batteries (AZIBs). In this work, the large layer spacing V<sub>10</sub>O<sub>24</sub>·nH<sub>2</sub>O is synthesized through a simple hydrothermal method as AZIBs cathodes with increased oxygen vacancies and structural water which effectively improved the diffusion kinetics of Zn<sup>2+</sup>. As a consequence, V<sub>10</sub>O<sub>24</sub>·nH<sub>2</sub>O electrode exhibits excellent electrochemical performance with a specific capacity of up to 359 mA h g<sup>−1</sup> at 0.2 A g<sup>−1</sup> and 95 % capacity retention after 1500 cycles at high current density of 5 A g<sup>−1</sup>. In addition, the ex-situ characterization further reveals the zinc storage mechanism of V<sub>10</sub>O<sub>24</sub>·nH<sub>2</sub>O material with large layer spacing during the cycling process. This study presents a practical approach to enhancing vanadium oxides, offering valuable insights for accelerating the development of high-performance AZIBs.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":null,"pages":null},"PeriodicalIF":8.9000,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of energy storage","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2352152X24036508","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
Abstract
Vanadium oxides with large layer spacing are regarded as suitable candidates for aqueous zinc ion batteries (AZIBs). In this work, the large layer spacing V10O24·nH2O is synthesized through a simple hydrothermal method as AZIBs cathodes with increased oxygen vacancies and structural water which effectively improved the diffusion kinetics of Zn2+. As a consequence, V10O24·nH2O electrode exhibits excellent electrochemical performance with a specific capacity of up to 359 mA h g−1 at 0.2 A g−1 and 95 % capacity retention after 1500 cycles at high current density of 5 A g−1. In addition, the ex-situ characterization further reveals the zinc storage mechanism of V10O24·nH2O material with large layer spacing during the cycling process. This study presents a practical approach to enhancing vanadium oxides, offering valuable insights for accelerating the development of high-performance AZIBs.
期刊介绍:
Journal of energy storage focusses on all aspects of energy storage, in particular systems integration, electric grid integration, modelling and analysis, novel energy storage technologies, sizing and management strategies, business models for operation of storage systems and energy storage developments worldwide.