The effect of coprecipitation and heating temperature on structural evolution and electrochemical performance of iron-based prussian blue analogs

IF 2.6 4区 化学 Q3 ELECTROCHEMISTRY
Yuqing Liu, Wencheng Chu, Yaozu Xu, Zijian Yuan, Jiarui Liu, Haitao Zhao, Quan Liu, Wu Zhang
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Abstract

Iron-based Prussian blue analogs (PBAs) are synthesized using a modified coprecipitation approach at different temperatures to study the effect of coprecipitation reaction temperature on structural and electrochemical performance. The experimental results showed that the iron-based PBAs transferred from the cubic structure to the monoclinic phase as the temperature increased from 5 °C to 60 °C, with the former exhibiting rich-in-boundary morphology and the latter showing a well-defined cubic shape. The electrochemical performance of the samples is closely related to the structure: the PBAs with monoclinic structures exhibit a higher charge/discharge specific capacity than those of PBAs with cubic structures. In addition, the samples are further treated at 270 °C, new phases are probed, and the charge/discharge specific capacity for the HT-PB-60 sample is significantly improved by more than 36.15%.

Abstract Image

共沉淀和加热温度对铁基普鲁士蓝类似物结构演变和电化学性能的影响
采用改良共沉淀方法,在不同温度下合成了铁基普鲁士蓝类似物(PBAs),以研究共沉淀反应温度对结构和电化学性能的影响。实验结果表明,随着温度从 5 ℃升高到 60 ℃,铁基 PBA 从立方结构转变为单斜相,前者表现出丰富的边界形貌,后者则呈现出清晰的立方体形状。样品的电化学性能与结构密切相关:单斜结构的 PBA 比立方结构的 PBA 具有更高的充放电比容量。此外,样品在 270 ℃ 下进一步处理后,探究出了新的相,HT-PB-60 样品的充放电比容量显著提高了 36.15% 以上。
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来源期刊
CiteScore
4.80
自引率
4.00%
发文量
227
审稿时长
4.1 months
期刊介绍: The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry. The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces. The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis. The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.
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