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241011s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202414048
|2 doi
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|a pubmed24n1616.xml
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|a (DE-627)NLM378765477
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|a (NLM)39390889
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Cao, Yang
|e verfasserin
|4 aut
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|a Targeted Defect Repair and Multi-functional Interface Construction for the Direct Regeneration of Spent LiFePO4 Cathodes
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 28.11.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2024 Wiley‐VCH GmbH.
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|a Due to the low economic benefits and environmental pollution of traditional recycling methods, the disposal of spent LiFePO4 (SLFP) presents a significant challenge. The capacity fade of SLFP cathode is primarily caused by lithium loss and formation of a Fe (III) phase. Herein, a synergistic repair effect is proposed to achieve defect repair and multi-functional interface construction for the direct regeneration of SLFP. Tannic acid (TA) forms a compact coating precursor for a carbon layer on SLFP with abundant functional groups and creates a mildly acidic environment to enhance the reducibility of thiourea (TU). Therefore, TU reduces Fe (III) to Fe (II) and repairs Li-Fe anti-site defects of SLFP, while at the same time acting as a source of N/S-doping elements for the carbon layer at a lower temperature (140 °C). The multi-functional carbon layer improves the properties of the regenerated LiFePO4 (RLFP) due to the enhanced conductivity, structure maintenance and protection, and the improved kinetics of Li+ transport. Furthermore, the Fe─O and P─O bonds are strengthened, further enhancing the structural stability of the RLFP. Consequently, the RLFP demonstrates outstanding performance with a discharge capacity of 141.3 mAh g-1 and capacity retention of 72% after 1000 cycles at 1 C
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|a Journal Article
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|a Fe─O and P─O bonds
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|a direct regeneration
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|a element doping
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|a spent LiFePO4
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|a Li, Junfeng
|e verfasserin
|4 aut
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| 700 |
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|a Tang, Di
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhou, Fei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yuan, Mengwei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhu, Yanfei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Feng, Chengzhi
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Shi, Ruyu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wei, Xijun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Boran
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Song, Yingze
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cheng, Hui-Ming
|e verfasserin
|4 aut
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| 700 |
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|a Zhou, Guangmin
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 36(2024), 48 vom: 08. Nov., Seite e2414048
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:36
|g year:2024
|g number:48
|g day:08
|g month:11
|g pages:e2414048
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|u http://dx.doi.org/10.1002/adma.202414048
|3 Volltext
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