Wen Chen, Haotian Qu, Ruyu Shi, Junxiong Wang, Haocheng Ji, Zhaofeng Zhuang, Jun Ma, Di Tang, Junfeng Li, Jie Tang, Guanjun Ji, Xiao Xiao, Yanfei Zhu, Guangmin Zhou
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引用次数: 0
Abstract
Recycling the graphite anode is essential for both environmental protection and resource sustainability in lithium-ion batteries. Current recycling strategies emphasize closed-loop recovery but ignore the potential for value-added utilization. Herein, we present an upcycling strategy that converts spent graphite into fast-charging graphite. By creating an isotropic ion transport pathway on the surface of spent graphite and utilizing the fast ion migration channel inherent in the bulk’s defect structure, a direct upgrade of spent graphite for fast charging is achieved. A proposed structure model, derived from spent graphite, shows improved fast-charging performance at the particle and electrode levels. Regenerated graphite demonstrates a high specific capacity of 220 mAh g–1 at 4C, approximately 2.8 times higher than that of commercial graphite (80 mAh g–1), with 73% of capacity retention after 300 cycles. This work provides fundamental insights into upcycling spent graphite, featuring short production processes and great economic and environmental benefits.
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.