Long-Life Regenerated LiFePO4 from Spent Cathode by Elevating the d-Band Center of Fe

doi:10.1002/adma.202208034

IMR OpenIR

	Long-Life Regenerated LiFePO4 from Spent Cathode by Elevating the d-Band Center of Fe
	Jia, Kai 1,2; Ma, Jun 2; Wang, Junxiong 1,2; Liang, Zheng 1; Ji, Guanjun 1,2; Piao, Zhihong 2; Gao, Runhua 2; Zhu, Yanfei 2; Zhuang, Zhaofeng 2; Zhou, Guangmin 2; Cheng, Hui-Ming 3,4
通讯作者	Liang, Zheng(liangzheng06@sjtu.edu.cn) ; Zhou, Guangmin(guangminzhou@sz.tsinghua.edu.cn) ; Cheng, Hui-Ming(cheng@imr.ac.cn)
	2022-12-11
发表期刊	ADVANCED MATERIALS
ISSN	0935-9648
页码	13
摘要	A large amount of spent LiFePO4 (LFP) has been produced in recent years because it is one of the most widely used cathode materials for electric vehicles. The traditional hydrometallurgical and pyrometallurgical recycling methods are doubted because of the economic and environmental benefits; the direct regeneration method is considered a promising way to recycle spent LFP. However, the performance of regenerated LFP by direct recycling is not ideal due to the migration of Fe ions during cycling and irreversible phase transition caused by sluggish Li+ diffusion. The key to addressing the challenge is to immobilize Fe atoms in the lattice and improve the Li+ migration capability during cycling. In this work, spent LFP is regenerated by using environmentally friendly ethanol, and its cycling stability is promoted by elevating the d-band center of Fe atoms via construction of a heterogeneous interface between LFP and nitrogen-doped carbon. The Fe-O bonding is strengthened and the migration of Fe ions during cycling is suppressed due to the elevated d-band center. The Li+ diffusion kinetics in the regenerated LFP are improved, leading to an excellent reversibility of the phase transition. Therefore, the regenerated LFP exhibits an ultrastable cycling performance at a high rate of 10 C with approximate to 80% capacity retention after 1000 cycles.
关键词	battery recycling direct regeneration elevated d-band centers Fe-O bonding heterogeneous interfaces
资助者	National Natural Science Foundation of China ; National Key Research and Development Program of China ; Interdisciplinary Research and Innovation Fund of Tsinghua Shenzhen International Graduate School ; Shanghai Jiao Tong University
DOI	10.1002/adma.202208034
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52072205] ; National Key Research and Development Program of China[2019YFA0705700] ; Interdisciplinary Research and Innovation Fund of Tsinghua Shenzhen International Graduate School[2021YFB2500200] ; Shanghai Jiao Tong University
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000896929000001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：42[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/175945
专题	中国科学院金属研究所
通讯作者	Liang, Zheng; Zhou, Guangmin; Cheng, Hui-Ming
作者单位	1.Shanghai Jiao Tong Univ, Frontiers Sci Ctr Transformat Mol, Sch Chem & Chem Engn, Shanghai 200240, Peoples R China 2.Tsinghua Univ, Shenzhen Geim Graphene Ctr, Tsinghua Shenzhen Int Grad Sch, Shenzhen 518055, Peoples R China 3.Chinese Acad Sci, Inst Technol Carbon Neutral, Shenzhen Inst Adv Technol, Fac Mat Sci & Engn, Shenzhen 518055, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Jia, Kai,Ma, Jun,Wang, Junxiong,et al. Long-Life Regenerated LiFePO4 from Spent Cathode by Elevating the d-Band Center of Fe[J]. ADVANCED MATERIALS,2022:13.
APA	Jia, Kai.,Ma, Jun.,Wang, Junxiong.,Liang, Zheng.,Ji, Guanjun.,...&Cheng, Hui-Ming.(2022).Long-Life Regenerated LiFePO4 from Spent Cathode by Elevating the d-Band Center of Fe.ADVANCED MATERIALS,13.
MLA	Jia, Kai,et al."Long-Life Regenerated LiFePO4 from Spent Cathode by Elevating the d-Band Center of Fe".ADVANCED MATERIALS (2022):13.