Engineering Dry Electrode Manufacturing for Sustainable Lithium-Ion Batteries

Engineering Dry Electrode Manufacturing for Sustainable Lithium-Ion Batteries

22 January 2024 | Mohamed Djihad Bouguern, Anil Kumar Madikere Raghunatha Reddy, Xia Li, Sixu Deng, Harriet Laryea and Karim Zaghib
This review discusses the development of dry electrode manufacturing for sustainable lithium-ion batteries (LIBs). The paper highlights the challenges of traditional wet electrode processes, which involve solvents like N-methyl pyrrolidine (NMP), leading to high costs, energy consumption, and environmental impact. Dry electrode processes, which avoid solvents, offer advantages such as reduced production time, lower energy use, and decreased equipment investment. The review examines three dry film techniques—extrusion, binder fibrillation, and dry spraying deposition—for LIB electrode coatings, emphasizing cost-effective large-scale production methods like hot melting, extrusion, and binder fibrillation. The paper also explores the benefits of dry processes, including enhanced compacted density, reduced residual solvents, improved mechanical strength, and lower labor time. Additionally, it addresses the environmental and economic advantages of dry electrode manufacturing, such as reduced CO₂ emissions and lower production costs. The review concludes that dry electrode processes represent a promising direction for sustainable LIB manufacturing, offering a more environmentally friendly and efficient alternative to traditional wet methods.This review discusses the development of dry electrode manufacturing for sustainable lithium-ion batteries (LIBs). The paper highlights the challenges of traditional wet electrode processes, which involve solvents like N-methyl pyrrolidine (NMP), leading to high costs, energy consumption, and environmental impact. Dry electrode processes, which avoid solvents, offer advantages such as reduced production time, lower energy use, and decreased equipment investment. The review examines three dry film techniques—extrusion, binder fibrillation, and dry spraying deposition—for LIB electrode coatings, emphasizing cost-effective large-scale production methods like hot melting, extrusion, and binder fibrillation. The paper also explores the benefits of dry processes, including enhanced compacted density, reduced residual solvents, improved mechanical strength, and lower labor time. Additionally, it addresses the environmental and economic advantages of dry electrode manufacturing, such as reduced CO₂ emissions and lower production costs. The review concludes that dry electrode processes represent a promising direction for sustainable LIB manufacturing, offering a more environmentally friendly and efficient alternative to traditional wet methods.
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