FeHCF/Zn电池的电化学性能研究
Electrochemical Performance Study of FeHCF/Zn Batteries
张琼1
作者信息
- 1. 晋中职业技术学院,山西 晋中 030600
- 折叠
摘要
水性可充电锌离子电池因其低成本和安全性而备受关注,然而,水性锌离子电池的正极材料极易劣化,限制了电池稳定的能量输出.在水系锌离子电池中,正极材料尤其是普鲁士蓝类化合物(FeHCF)因其三维开放结构、高工作电压、简单的合成方法等优点而成为竞争力非常强的候选正极材料.本工作采用沉淀法制备了普鲁士蓝类似物FeHCF,测试它的物化性能,组装扣式全电池,进行电化学测试,结果表明,水电解质在1C时可提供80 mAh/g的比容量,并显示出良好的循环稳定性(在1C下循环50次后容量保持率为90％),这种普鲁士蓝基水系锌离子电池的成本低、能量密度高、循环寿命长,在中小规模储能应用中大有可为.
Abstract
Aqueous rechargeable zinc ion batteries have attracted much attention due to their low cost and safety,however,the cathode materials of aqueous zinc ion batteries are highly susceptible to degradation,limiting the stable energy output of the batteries.In aqueous zinc ion batteries,cathode materials,especially Prussian blue compounds(FeHCF),are very competitive candidates for cathode materials due to their three-dimensional open structure,high operating voltage,and simple synthesis method.In this work,the Prussian blue analogue FeHCF was prepared by the precipitation method,tested for its physicochemical properties,assembled a button full cell,and electrochemical tests were performed,and the results showed that the aqueous electrolyte could thus provide a specific capacity of 80 mAh/g at 1C and showed good cycling stability(90％capacity retention after 50 cycles at 1C),and that such a Prussian blue-based aqueous zinc-ion batteries have a low cost,high energy density,and long cycle life is promising for small and medium scale energy storage applications.
关键词
水系锌离子电池/正极材料/FeHCF/普鲁士蓝Key words
Zn ion battery/cathode materials/FeHCF/Prussian blue引用本文复制引用
出版年
2024
NETL
NSTL
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