Targeted Defect Repair and Multi-functional Interface Construction for the Direct Regeneration of Spent LiFePO4 Cathodes
文献类型：期刊论文
| 作者 | Cao, Yang1,2,3; Li, Junfeng2,3; Tang, Di2,3; Zhou, Fei1; Yuan, Mengwei4,5; Zhu, Yanfei2,3; Feng, Chengzhi1; Shi, Ruyu2,3; Wei, Xijun1,2,3; Wang, Boran2,3 |
| 刊名 | ADVANCED MATERIALS
 |
| 出版日期 | 2024-10-11 |
| 页码 | 11 |
| 关键词 | direct regeneration element doping Fe & horbar spent LiFePO4 O and P & horbar O bonds |
| ISSN号 | 0935-9648 |
| DOI | 10.1002/adma.202414048 |
| 通讯作者 | Wei, Xijun(xijunwei1992@swust.edu.cn) ; Wang, Boran(wangbr93@sz.tsinghua.edu.cn) ; Cheng, Hui-Ming(cheng@imr.ac.cn) ; Zhou, Guangmin(guangminzhou@sz.tsinghua.edu.cn) |
| 英文摘要 | 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 degrees 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 & horbar;O and P & horbar;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. |
| 资助项目 | Natural Science Foundation of Sichuan Province[2021YFB2500200] ; National Key Research and Development Program of China[U21A20174] ; Joint Funds of the National Natural Science Foundation of China[RCBS20231211090637065] ; Shenzhen Science and Technology Program[2021ZT09L197] ; Guangdong Innovative and Entrepreneurial Research Team Program[2023NSFSC1128] ; Interdisciplinary Research and Innovation Fund of Tsinghua Shenzhen International Graduate School, Natural Science Foundation of Sichuan Province[20zx7142] ; Project of the Southwest University of Science and Technology |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001336704300001 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 资助机构 | Natural Science Foundation of Sichuan Province ; National Key Research and Development Program of China ; Joint Funds of the National Natural Science Foundation of China ; Shenzhen Science and Technology Program ; Guangdong Innovative and Entrepreneurial Research Team Program ; Interdisciplinary Research and Innovation Fund of Tsinghua Shenzhen International Graduate School, Natural Science Foundation of Sichuan Province ; Project of the Southwest University of Science and Technology |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Wei, Xijun; Wang, Boran; Cheng, Hui-Ming; Zhou, Guangmin |
| 作者单位 | 1.Southwest Univ Sci & Technol, Engn Res Ctr Biomass Mat, Sch Mat & Chem, State Key Lab Environm Friendly Energy Mat,Minist, Mianyang 621010, Sichuan, Peoples R China 2.Tsinghua Univ, Tsinghua Berkeley Shenzhen Inst, Shenzhen Geim Graphene Ctr, Shenzhen 518055, Peoples R China 3.Tsinghua Univ, Tsinghua Shenzhen Int Grad Sch, Shenzhen 518055, Peoples R China 4.Beijing Normal Univ, Ctr Adv Mat Res, Zhuhai 519087, Peoples R China 5.Beijing Normal Univ, Fac Arts & Sci, Zhuhai 519087, Peoples R China 6.Chinese Acad Sci, Shenzhen Inst Adv Technol, Inst Technol Carbon Neutral, Shenzhen 518055, Peoples R China 7.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 | Cao, Yang,Li, Junfeng,Tang, Di,et al. Targeted Defect Repair and Multi-functional Interface Construction for the Direct Regeneration of Spent LiFePO4 Cathodes[J]. ADVANCED MATERIALS,2024:11. |
| APA | Cao, Yang.,Li, Junfeng.,Tang, Di.,Zhou, Fei.,Yuan, Mengwei.,...&Zhou, Guangmin.(2024).Targeted Defect Repair and Multi-functional Interface Construction for the Direct Regeneration of Spent LiFePO4 Cathodes.ADVANCED MATERIALS,11. |
| MLA | Cao, Yang,et al."Targeted Defect Repair and Multi-functional Interface Construction for the Direct Regeneration of Spent LiFePO4 Cathodes".ADVANCED MATERIALS (2024):11. |
入库方式： OAI收割
来源：金属研究所
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