焙烧温度对锌离子电池正极材料ZnMn2O4储锌性能的影响

IF 4.3 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Journal of Physics and Chemistry of Solids Pub Date : 2025-04-28 DOI:10.1016/j.jpcs.2025.112824

Haiyan Chen , Jinhuan Yao , Jiqiong Jiang , Wenhan Xu , Shunhua Xiao , Yanwei Li

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引用次数: 0

摘要

ZnMn2O4具有高电压、环保等优点，是一种很有前途的水性锌离子电池正极材料。本研究采用共沉淀法和煅烧法（600 ~ 900℃）合成了ZnMn2O4，考察了温度对其结构和性能的影响。提高煅烧温度可以提高结晶度和粒度，在800℃时效果最佳。ZMO-800样品具有均匀的50-100 nm纳米颗粒，形成多孔结构，提供卓越的锌存储：在1.0 ag - 1下循环1000次后124.8 mAh g - 1（保留88.7%）和在3.0 ag - 1下136 mAh g - 1。增强的性能源于改进的结晶度、纳米级颗粒和高表面积。通过CV， EIS， GITT和非原位XRD/Raman/SEM对其机理进行了分析，发现其具有稳定的电化学行为。这项工作提供了一种简单的策略来优化高性能ZIBs的ZnMn2O4阴极。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Influence of calcination temperature on the zinc storage performance of ZnMn2O4 as a cathode material for zinc-ion batteries

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Influence of calcination temperature on the zinc storage performance of ZnMn2O4 as a cathode material for zinc-ion batteries

ZnMn₂O₄ is a promising cathode material for aqueous zinc-ion batteries owing to its high voltage and eco-friendliness. This study synthesizes ZnMn₂O₄ via coprecipitation and calcination (600–900 °C), investigating temperature effects on structure and performance. Increasing calcination temperature enhances crystallinity and particle size, with optimal results at 800 °C. The ZMO-800 sample exhibits uniform 50–100 nm nanoparticles forming a porous architecture, delivering superior zinc storage: 124.8 mAh g⁻¹ after 1000 cycles at 1.0 A g⁻¹ (88.7 % retention) and 136 mAh g⁻¹ at 3.0 A g⁻¹. Enhanced performance stems from improved crystallinity, nanoscale particles, and high surface area. Mechanism analysis via CV, EIS, GITT, and ex-situ XRD/Raman/SEM reveals stable electrochemical behavior. This work provides a simple strategy to optimize ZnMn₂O₄ cathodes for high-performance ZIBs.

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来源期刊

Journal of Physics and Chemistry of Solids 工程技术-化学综合

CiteScore

7.80

自引率

2.50%

发文量

605

审稿时长

40 days

期刊介绍： The Journal of Physics and Chemistry of Solids is a well-established international medium for publication of archival research in condensed matter and materials sciences. Areas of interest broadly include experimental and theoretical research on electronic, magnetic, spectroscopic and structural properties as well as the statistical mechanics and thermodynamics of materials. The focus is on gaining physical and chemical insight into the properties and potential applications of condensed matter systems. Within the broad scope of the journal, beyond regular contributions, the editors have identified submissions in the following areas of physics and chemistry of solids to be of special current interest to the journal: Low-dimensional systems Exotic states of quantum electron matter including topological phases Energy conversion and storage Interfaces, nanoparticles and catalysts.