Shi Luo, Fengrui Liu, Wanshi Tianxu, Yu Liu, Chuntao Zhang, Chuanyu Bie, Min Liu, Paul K Chu, Kaifu Huo, Biao Gao
{"title":"Regeneration of Spent Graphite via Graphite-like Turbostratic Carbon Coating for Advanced Li Ion Battery Anode","authors":"Shi Luo, Fengrui Liu, Wanshi Tianxu, Yu Liu, Chuntao Zhang, Chuanyu Bie, Min Liu, Paul K Chu, Kaifu Huo, Biao Gao","doi":"10.1016/j.ensm.2024.103833","DOIUrl":null,"url":null,"abstract":"Recycling spent graphite (SG) from lithium-ion batteries is an effective approach to reduce resource waste and address environmental issues. The main reasons for the capacity degradation of graphite anode are the structural destruction and changes in surface composition during the cycling process. However, repairing the graphite with satisfactory electrochemical properties remains a significant challenge due to the lack of efficient recycling methods. Herein, a low-temperature magnesium catalytic method is developed to reconstruct turbostratic carbon coating and repair defects in SG at 900 °C. The dense turbostratic carbon not only effectively repairs the surface damage of the SG and mitigates the occurrence of side reactions but also improves the Li<sup>+</sup> and electron transfer kinetics of SG. The regenerated graphite anode exhibits high initial Coulombic efficiency (ICE) of 86.2%, a high capacity of 350 mAh g<sup>−1</sup> after 500 cycles at 0.5 C with a capacity retention of 96.5%, which reaches the requirements of commercial applications. Furthermore, a techno-economic analysis shows that this strategy has higher environmental and economic benefits compared to conventional recycling methods.","PeriodicalId":306,"journal":{"name":"Energy Storage Materials","volume":null,"pages":null},"PeriodicalIF":18.9000,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy Storage Materials","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1016/j.ensm.2024.103833","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Recycling spent graphite (SG) from lithium-ion batteries is an effective approach to reduce resource waste and address environmental issues. The main reasons for the capacity degradation of graphite anode are the structural destruction and changes in surface composition during the cycling process. However, repairing the graphite with satisfactory electrochemical properties remains a significant challenge due to the lack of efficient recycling methods. Herein, a low-temperature magnesium catalytic method is developed to reconstruct turbostratic carbon coating and repair defects in SG at 900 °C. The dense turbostratic carbon not only effectively repairs the surface damage of the SG and mitigates the occurrence of side reactions but also improves the Li+ and electron transfer kinetics of SG. The regenerated graphite anode exhibits high initial Coulombic efficiency (ICE) of 86.2%, a high capacity of 350 mAh g−1 after 500 cycles at 0.5 C with a capacity retention of 96.5%, which reaches the requirements of commercial applications. Furthermore, a techno-economic analysis shows that this strategy has higher environmental and economic benefits compared to conventional recycling methods.
期刊介绍:
Energy Storage Materials is a global interdisciplinary journal dedicated to sharing scientific and technological advancements in materials and devices for advanced energy storage and related energy conversion, such as in metal-O2 batteries. The journal features comprehensive research articles, including full papers and short communications, as well as authoritative feature articles and reviews by leading experts in the field.
Energy Storage Materials covers a wide range of topics, including the synthesis, fabrication, structure, properties, performance, and technological applications of energy storage materials. Additionally, the journal explores strategies, policies, and developments in the field of energy storage materials and devices for sustainable energy.
Published papers are selected based on their scientific and technological significance, their ability to provide valuable new knowledge, and their relevance to the international research community.