Work

High-Speed Li-Ion Battery Manufacturing Process Applying the Dewatering Concept

Year: 2024

Type: article

Abstract: Conventional lithium-ion battery manufacturing process consumes a lot of time and energy to dry the solvent in the battery slurry. To reduce the drying time and energy consumption, we introduce the dewatering concept in the electrode manufacturing process, and propose a high-speed electrode manufacturing process that applies the dewatering concept (HEMPAD). In HEMPAD, filter cake is formed by dewatering more than 40% of the solvent before drying process corresponding to the dewatering speed of 1.6 g/m2∙s, while in the same period of time the conventional process shows the drying speed of 1.0 and 1.2 g/m2∙s at 80 and 100 ℃, respectively. HEMPAD has the advantages of not only decreasing the drying time but also reducing the energy consumption by half at the same drying temperature. It exhibits stable cyclic performance at 0.5 C even at a higher drying temperature (100 ℃) unlike the conventional process, which produces pinholes on the surface. The introduction of the dewatering concept in the electrode manufacturing process is promising for next-generation battery production, as it enables faster drying speed, less energy consumption, and relatively stable cyclic performance even at the drying temperature higher than 100 ℃.

Source: Industrial & Engineering Chemistry Research

DOI: 10.1021/acs.iecr.3c03586

Authors: Min Hwan Jeong, Jae Hwan Jeong, Hye Jung Youn, Seon Yeop Jung, Kyung Hyun Ahn

Institutions: Seoul National University, Stanford University, Dankook University

Language: English

Topic: Advancements in Battery Materials

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDGs: Affordable and clean energy, Responsible consumption and production, Industry, innovation and infrastructure

Open Access status: green

Funder: National Research Foundation of Korea