浸出(土壤学)
复合数
锰
材料科学
阴极
尾矿
电化学
冶金
X射线光电子能谱
锌
化学工程
化学
复合材料
电极
环境科学
物理化学
土壤科学
土壤水分
工程类
作者
Jinhuan Yao,Ting Yu,Qian Huang,Yanwei Li,Bin Huang,Jianwen Yang
标识
DOI:10.1016/j.jiec.2024.02.042
摘要
The high-value utilization of tailings is crucial for saving limited resources and supporting the sustainable development of society. In the present work, a Mn2O3/Fe2O3 composite is prepared from manganese ore tailing through reduction leaching and thermal decomposition methods. Further, the zinc storage performance of the Mn2O3/Fe2O3 composite for zinc ion batteries (ZIBs) is explored. The Mn2O3/Fe2O3 composite maintains a specific capacity of 224.8 mA h g−1 after 300 cycles at 500 mA g−1, suggesting its potential applications in ZIBs. CV and GITT analysis reveal that the Mn2O3/Fe2O3 composite has an obvious pseudocapacitive behavior during the charge/discharge process, and the Zn2+ diffusion coefficient ranges in the orders of 10−14-10−12 cm2 s−1. The charge/discharge mechanism of the Mn2O3/Fe2O3 composite is also explored using ex-situ XRD and XPS measurements. The work provides a new avenue for the high-value use of manganese ore tailing in the electrochemical energy storage field.
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