首页|Synthesizing core-shell Ni-rich LiNixCoyMnzO2 from spent Li-ion battery leachate

Synthesizing core-shell Ni-rich LiNixCoyMnzO2 from spent Li-ion battery leachate

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As the global electric vehicle market continues to grow,the recycling of Li-ion battery(LIB)becomes more important worldwide and the resynthesis of cathode materials would be the most value-added recycling approach taking into account limited metal resources.Although resynthesized homogenous LiNixCoyMnzO2(NCM)from spent LIB leachate shows comparable battery performance to pristine NCM from virgin materials,there is general concern in its cycling performance.Here,we synthesize core-shell(CS)Ni-rich NCM,which consists of Ni-rich NCM as the core and NCM derived from the original or puri-fied leachate of spent LIBs as the shell.Resynthesized CS Ni-rich NCM exhibits improved rate capability resulting from expanded interslab thickness in the NCM structure.CS Ni-rich NCM from purified LIB lea-chate shows improvement in cycling performance and thermal stability.It specifically delivers a capacity retention of 86.6％at a high temperature after 80 cycles compared to that(75.0％)of pristine CS Ni-rich NCM.These improvements are caused by a relatively high Mg content on the shell and the widespread distribution of Al through the CS structure.CS Ni-rich NCM derived from spent LIB leachate provides a new alternative approach to conventional LIB recycling methods,which would utilize efficiently limited metal resources for the sustainable LIB production.

Li-ion batteryRecyclingLeachateNCMCore-shell

Seongdeock Jeong、Sanghyuk Park、Dongwoo Kim、Gyeongbin Ko、Wooseok Kim、Sungkyu Kim、Sungho Ban、Haeun Lee、Yonghoon Kim、Kyungjung Kwon

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Department of Energy and Mineral Resources Engineering,Sejong University,Gwangjin-gu,Seoul 05006,Republic of Korea

Autonomous Intelligent Unmanned Flying Vehicles Institute,Sejong University,Gwangjin-gu,Seoul 05006,Republic of Korea

Department of Nanotechnology & Advanced Materials Engineering,Sejong University,Gwangjin-gu,Seoul 05006,Republic of Korea

Battery Cell Development Team,Hyundai Motor Company,Hwaseong-si,Gyeonggi-do 18280,Republic of Korea

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2024

10.1016/j.jechem.2024.07.031

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子：0.654
ISSN：2095-4956
年,卷(期)：2024.99(12)