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Selective Extraction of Lithium by Co-Pyrolysis of Spent NCM Cathode Powder and Polypropylene Followed by Water Leaching
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Tonglin TIAN1, Guoxing REN1, Weiwei GUO2, Songwen XIAO1
Mining and Metallurgical Engineering | 2024, 44(4) : 100 - 104
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Mining and Metallurgical Engineering | 2024, 44(4): 100-104
• SPECIAL ISSUE: BATTERY MATERIALS •
Selective Extraction of Lithium by Co-Pyrolysis of Spent NCM Cathode Powder and Polypropylene Followed by Water Leaching
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Tonglin TIAN1, Guoxing REN1, Weiwei GUO2, Songwen XIAO1
Affiliations
  • 1.Zhongyuan Critical Metals Laboratory, Zhengzhou University, Zhengzhou 450001, Henan, China
  • 2.Henan Xin'anli Security Technology Co., Ltd., Zhengzhou 450000, Henan, China
Published: 2024-08-01 doi: 10.3969/j.issn.0253-6099.2024.04.019
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An experiment was conducted on selective extraction of lithium by co-pyrolysis of spent NCM cathode powder and polypropylene followed by water leaching, and the obtained pyrolysis products were characterized. In the experiment, co-pyrolysis of NCM cathode powder with 40% polypropylene ran at 550 ℃ for 2 h, with argon flow rate at 200 mL/min, and then the obtained pyrolysis product was subjected to water leaching, resulting in the lithium leaching rate of 87.92%. It is found that lithium loss is mainly attributed to the formation of water-insoluble lithium cobalt oxide during co-pyrolysis.

spent lithium-ion battery  /  NCM cathode powder  /  pyrolysis reduction  /  lithium  /  polypropylene  /  water leaching
Tonglin TIAN, Guoxing REN, Weiwei GUO, Songwen XIAO. Selective Extraction of Lithium by Co-Pyrolysis of Spent NCM Cathode Powder and Polypropylene Followed by Water Leaching[J]. Mining and Metallurgical Engineering, 2024 , 44 (4) : 100 -104 . DOI: 10.3969/j.issn.0253-6099.2024.04.019
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Article Info
doi: 10.3969/j.issn.0253-6099.2024.04.019
  • Receive Date：2024-05-13
  • Online Date：2026-03-18
  • Published：2024-08-01
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  • Received：2024-05-13
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Affiliations
    1.Zhongyuan Critical Metals Laboratory, Zhengzhou University, Zhengzhou 450001, Henan, China
    2.Henan Xin'anli Security Technology Co., Ltd., Zhengzhou 450000, Henan, China
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https://castjournals.cast.org.cn/joweb/kygczz/EN/10.3969/j.issn.0253-6099.2024.04.019
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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