Si-Dong Zhang, Jun Wang, Mu-Yao Qi, Si-Jie Guo, Hongchang Jin, Hengxing Ji, Ying-Rui Lu, Ting-Shan Chan, An-Min Cao
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Recycling Spent LiCoO2 for Improved 4.6 V Performance
Rapid replacement of “3C” (computer, communication, and consumer electronics) products and the limited calendar life of batteries lead to the increasing retirement of LiCoO2 (LCO)-based lithium-ion batteries (LIBs), which makes recycling in high demand for a sustainable development. Herein, we propose a straightforward sintering process to rejuvenate the spent LCO to achieve a much-favored cycling stability at 4.6 V. The addition of Mg3(PO4)2 is critical for restoring the structure of spent LCO after heat treatment, enabling a synergistic effect of bulk Mg2+ doping and surface Li3PO4 decoration in the reconstructed LCO. This structural modification effectively suppresses harmful O3/H1–3 phase transitions and enhances Li+ transport dynamics, thereby endowing the recycled LCO with extraordinary cycling stability and rate performance. In the 4.5 V LCO/graphite pouch cell, a capacity retention of 75% is achieved after 480 cycles. Our work provides an efficient route for recycling and reusing spent LCO cathode materials, showing promise for practical applications.
ACS Energy Letters Energy-Renewable Energy, Sustainability and the Environment
CiteScore
31.20
自引率
5.00%
发文量
469
审稿时长
1 months
期刊介绍:
ACS Energy Letters is a monthly journal that publishes papers reporting new scientific advances in energy research. The journal focuses on topics that are of interest to scientists working in the fundamental and applied sciences. Rapid publication is a central criterion for acceptance, and the journal is known for its quick publication times, with an average of 4-6 weeks from submission to web publication in As Soon As Publishable format.
ACS Energy Letters is ranked as the number one journal in the Web of Science Electrochemistry category. It also ranks within the top 10 journals for Physical Chemistry, Energy & Fuels, and Nanoscience & Nanotechnology.
The journal offers several types of articles, including Letters, Energy Express, Perspectives, Reviews, Editorials, Viewpoints and Energy Focus. Additionally, authors have the option to submit videos that summarize or support the information presented in a Perspective or Review article, which can be highlighted on the journal's website. ACS Energy Letters is abstracted and indexed in Chemical Abstracts Service/SciFinder, EBSCO-summon, PubMed, Web of Science, Scopus and Portico.