{"title":"Impact of morphology and crystalline structure over the Zn2+ ions storage in two-step solvothermal derived VO2","authors":"Guadalupe Ramírez-Campos , Próspero Acevedo-Peña , Obed Pérez , Agileo Hernández-Gordillo , M. González M , J.A.I. Díaz-Góngora , Edilso Reguera","doi":"10.1016/j.ceramint.2024.09.269","DOIUrl":null,"url":null,"abstract":"<div><div>Aqueous rechargeable zinc ion batteries (ARZIBs) represent a cheaper and more environmentally friendly alternative to lithium-ion batteries (LIBs) in energy storage systems. Vanadium oxide is one of the most attractive materials to be used as a cathode in ARZIBs because it has multiple oxidation states that grant high specific capacity. This work employed an alternative synthetic route to obtain VO<sub>2</sub> with varied morphology and structural properties utilizing vanadyl acetylacetonate as a precursor by tuning the temperature during two-step solvothermal/hydrothermal treatment. When highly crystalline VO<sub>2</sub> (B) with rod morphology is obtained, the electrode exhibits the best electrochemical response, with the most significant contribution of surface-confined redox processes to the charge stored. The ARZIB assembled with VO<sub>2</sub> rod showed an initial capacity of up to ∼300 mA h g<sup>−1</sup> (2.4 mA h cm<sup>−2</sup>) at 0.1 A g<sup>−1</sup>, delivering a specific energy of up to 168 W h kg<sup>−1</sup> at a specific power of 65 W kg<sup>−1</sup>. It exhibits outstanding stability after 2000 GCD cycles at 2.5 A g<sup>−1</sup>. Ex-situ structural and spectroscopic characterization showed that Zn<sup>2+</sup> storage causes an expansion and contraction of the lattice without evidence of crystalline phase transformations.</div></div>","PeriodicalId":267,"journal":{"name":"Ceramics International","volume":"50 23","pages":"Pages 49243-49253"},"PeriodicalIF":5.1000,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ceramics International","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0272884224042871","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, CERAMICS","Score":null,"Total":0}
引用次数: 0
Abstract
Aqueous rechargeable zinc ion batteries (ARZIBs) represent a cheaper and more environmentally friendly alternative to lithium-ion batteries (LIBs) in energy storage systems. Vanadium oxide is one of the most attractive materials to be used as a cathode in ARZIBs because it has multiple oxidation states that grant high specific capacity. This work employed an alternative synthetic route to obtain VO2 with varied morphology and structural properties utilizing vanadyl acetylacetonate as a precursor by tuning the temperature during two-step solvothermal/hydrothermal treatment. When highly crystalline VO2 (B) with rod morphology is obtained, the electrode exhibits the best electrochemical response, with the most significant contribution of surface-confined redox processes to the charge stored. The ARZIB assembled with VO2 rod showed an initial capacity of up to ∼300 mA h g−1 (2.4 mA h cm−2) at 0.1 A g−1, delivering a specific energy of up to 168 W h kg−1 at a specific power of 65 W kg−1. It exhibits outstanding stability after 2000 GCD cycles at 2.5 A g−1. Ex-situ structural and spectroscopic characterization showed that Zn2+ storage causes an expansion and contraction of the lattice without evidence of crystalline phase transformations.
在储能系统中，水性可充电锌离子电池（ARZIBs）是锂离子电池（LIBs）的一种更便宜、更环保的替代品。氧化钒是 ARZIBs 中最有吸引力的阴极材料之一，因为它具有多种氧化态，能产生高比容量。这项研究采用了另一种合成路线，利用乙酰丙酮酸钒酯作为前驱体，在两步溶热/水热处理过程中调节温度，从而获得具有不同形态和结构特性的 VO2。当获得具有棒状形态的高结晶 VO2（B）时，电极表现出最佳的电化学响应，表面约束氧化还原过程对电荷存储的贡献最大。与 VO2 棒组装在一起的 ARZIB 在 0.1 A g-1 的条件下显示出高达 ∼300 mA h g-1 （2.4 mA h cm-2）的初始容量，在 65 W kg-1 的比功率条件下可提供高达 168 W kg-1 的比能量。在 2.5 A g-1 的条件下，经过 2000 次 GCD 循环后，它表现出卓越的稳定性。原位结构和光谱特性分析表明，Zn2+ 的储存会导致晶格的膨胀和收缩，但没有晶体相变的迹象。
期刊介绍：
Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties.
Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour.
Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.
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