Preparation of lithium manganese iron phosphate cathode material from vanadium tailings

Li Zhiyu; Tang Ting; Wang Zhenghao; Chen Liang; Zhu Yingming; Wu Kejing; Luo Dongmei

doi:10.7513/j.issn.1004-7638.2024.06.003

Volume 45 Issue 6

Dec. 2024

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Li Zhiyu, Tang Ting, Wang Zhenghao, Chen Liang, Zhu Yingming, Wu Kejing, Luo Dongmei. Preparation of lithium manganese iron phosphate cathode material from vanadium tailings[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(6): 19-27. doi: 10.7513/j.issn.1004-7638.2024.06.003

Citation:

Li Zhiyu, Tang Ting, Wang Zhenghao, Chen Liang, Zhu Yingming, Wu Kejing, Luo Dongmei. Preparation of lithium manganese iron phosphate cathode material from vanadium tailings[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(6): 19-27. doi: 10.7513/j.issn.1004-7638.2024.06.003

Citation:

Li Zhiyu, Tang Ting, Wang Zhenghao, Chen Liang, Zhu Yingming, Wu Kejing, Luo Dongmei. Preparation of lithium manganese iron phosphate cathode material from vanadium tailings[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(6): 19-27. doi: 10.7513/j.issn.1004-7638.2024.06.003

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Preparation of lithium manganese iron phosphate cathode material from vanadium tailings

doi: 10.7513/j.issn.1004-7638.2024.06.003

1.
School of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, China
2.
School of Metallurgy and Environment Central South University, Changsha 410083, Hunan, China
3.
Institute of New Energy and Low Carbon Technology, Sichuan University, Chengdu 610065, Sichuan, China

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Received Date: 2024-02-29
Available Online: 2024-12-30
Publish Date: 2024-12-30

Abstract

Abstract

Using the iron-manganese-rich leaching solution generated during vanadium extraction from vanadium slag was used as the raw material, and ferromanganese oxalate dihydrate Mn_0.5Fe_0.5C₂O₄∙2H₂O was prepared by co-precipitation, and lithium ferromanganese iron phosphate LiFe_0.5Mn_0.5PO₄ anode material was successfully synthesized by the high-temperature solid-phase method using this precursor, which achieved the comprehensive utilization of the iron-manganese resources in the vanadium slag leaching solution. The results showed that under the conditions of initial pH 3.5, temperature 25 ℃, reaction time 90 min, ammonium oxalate addition 1.1 times of the theoretical value, and the addition mode of positive addition, the precipitation efficiency of Fe and Mn were 99.5% and 99.4%, respectively. The depth separation from other impurities was achieved, and the purity of Mn_0.5Fe_0.5C₂O₄·2H₂O reached 99.97% with small particle sizes and good dispersion. It can be used as a precursor for synthesizing lithium manganese iron phosphate cathode materials, which provides the idea for the industrial production of lithium iron manganese phosphate.
- vanadium slag leaching solution,
- co-precipitation,
- ferromanganese oxalate,
- lithium ferromanganese phosphate

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References(25)

References

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