锂(药物)
阴极
兴奋剂
材料科学
离子
相(物质)
化学工程
纳米技术
工程物理
光电子学
化学
电气工程
工程类
有机化学
医学
内分泌学
作者
Siyuan Zhou,Zitong Fei,Qi Meng,Peng Dong,Yingjie Zhang,Mingyu Zhang
出处
期刊:ACS applied energy materials
[American Chemical Society]
日期:2021-11-08
卷期号:4 (11): 12677-12687
被引量:20
标识
DOI:10.1021/acsaem.1c02396
摘要
The scientific recycling of cathode materials from spent lithium-ion batteries is beneficial for protecting environment and saving resources. Resolving poor cycling performance and improving the energy density of regenerated materials become urgent issues for the direct short-range recycling process. Here, we demonstrate a collaborative process with Li+ replenishment and co-doping for direct regeneration of spent LiCoO2 materials by the high-temperature solid-phase method. Based on the collaborative process, repairing of the crystal structure defects of the spent LiCoO2 and doping of Mg/Ti at Co site were achieved with replenishing the lack of chemical composition. The co-modified regenerated materials display the best high-voltage performance due to inhibiting phase transformation, strengthening structural stability, and enhancing Li+ diffusion ability by Mg/Ti co-doping. Our work provides an efficient approach for the short-range regeneration of spent cathode materials with boosting the development of the recycling industry for spent lithium-ion batteries.
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