NCM係 리튬이온電池 工程스크랩의 水素還元處理에 의한 리튬回收 및 NCM 粉末의 浸出擧動
Recovery of Lithium and Leaching Behavior of NCM Powder by Hydrogen Reductive Treatment from NCM System Li-ion Battery Scraps
2
조회
0
다운로드
7
인용
0
참고문헌
키워드
초록
NCM계 폐리튬전지 공정 스크랩 재활용의 연구에 일환으로서 리튬화합물의 회수와 NCM 전구체를 제조하기 위한 침출거동에대하여 살펴보았다. 이와 같은 목적을 달성하고자 수소를 이용하여 NCM계 스크랩 분말을 환원한 후, 먼저 CO2 가스로 탄산리튬을 회수하고, 산에 의한 침출거동을 연구하였다. 수소에 의한 환원율은 800oC에서 약 93%를 나타내었으며, 수세에 의해 약 99%순도의 탄산리튬을 제조하였다. 그리고 수소환원 처리 전후 분말에 대한 산 침출거동을 비교한 결과, 수소환원 처리에 의하여 2M 황산농도에서 코발트 32%, 니켈 45%의 침출효과가 향상되었으며, 망간의 경우에는 약 90% 정도 침출되었다.
Abstract
A study on the recovery of lithium and leaching behavior of NCM powder by hydrogen reduction for NCM system Li-ion battery scraps was investigated. The reductive rate was about 93% at 800oC by hydrogen treatment. The lithium carbonate with 99% purity was manufactured by using CO2 gas and washing method with water for NCM powder after hydrogen reduction. As a result of comparing the powders before and after the hydrogen reduction treatment for acid leaching behavior we obtained 32% enhanced leaching rate of cobalt, 45% enhanced leaching rate of nickel and the 90% leaching effect for manganese by hydrogen reduction at 2M H2SO4 concentration condition.
참고문헌 (17)
- H. C. Jung, "Overview and future concerns for lithium-ion batteries materials", J. Korean Powder Metallurgy Institute, 17(3), pp.175~189 (2010)
- 박홍규, "리튬이차전지용 양극재 개발 동향", 전기화학회지, 11(3), pp.197~210 (2008), 한국전기화학회
- H. S. Hong, "Overview and Prospects for cathode materials of lithium secondary batteries", Trend in Metals & Materials Engineering, 24(1), pp.26~32 (2011)
- G. C. Shim, "A state of art review on lithium-ion batteries for vehicular applications", Trend in Metals & Materials Engineering, 24(6), pp.49~64 (2011)
- 이정주, "二次電池 製造工程스크랩으로부터 高效率 親環境 코발트(Co)와 리튬(Li)의 回收에 關한 硏究", 자원리싸이클링, 19(6), pp.51~60 (2010), 한국자원리싸이클링학회
- 이재천, "리튬이온電池 製造工程의 廢陽極活物質로부터 濕式製鍊工程에 의한 코발트의 回收", 자원리싸이클링, 14(6), pp.28~36 (2005), 한국자원리싸이클링학회
- C. K. Lee, "Recovery of valuable metals from spent lithium ion batteries", J. Korean Ind. Eng. Chem., 12(8), pp.890~895 (2001)
- C. K. Lee, "Reductive leaching of LiCoO2 in a sulfuric acid solution", J. Korean Inst. of Resources Recycling, 10(6), pp.9~14 (2001)
- C. K. Lee, "Leaching of cathodic active materials from spent lithium ion battery", J. Korean Inst. of Resources Recycling, 9(4), pp.37~43 (2000)
- L. Li, "Environmental friendly leaching reagent for cobalt and lithium recovery from spent lithium-ion batteries", Waste Management, 30, pp.2615~2621 (2010)
- Y. Yamaji, "A novel flow sheet for processing of used lithium-ion batteries for recycling", Resource Processing, 58, pp.9~13 (2011)
- C. Liang, "Separation and recovery of Ni, Co, and Mn from spent lithium-ion batteries", The Chinese Journal of Nonferrous Metals, 21(5), pp.1192~1198 (2011)
- M. Petranikova, "Cobalt recovery from spent portable lithium accumulators after thermal treatment", Acta Metallugica Slovaca, 17(2), pp.106~115 (2011)
- E. M. Garcia, "Electrochemical recycling of cobalt from spent cathodes of lithium-ion batteries: its application as coating on SOFC interconnects", J. Appl. Electrochem, 41, pp.1373~1379 (2011)
- T. Georgi-Maschler, "Development of a recycling process for Li-ion batteries", J. of Power Sources, 207, pp.173~182 (2012)
- S. K. Kim, "The high efficient physical and chemical treatment of spent lithium ion battery module of electric vehicle for recovery of valuable metals", The 2011 spring meeting and 36the conference, pp.84~89 (2011), Korean Inst. of Resources Recycling
- R. Kononov, "Carbothermal solid state reduction of manganese oxide and ores in different gas atmospheres", 박사, pp.2008