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X-Roll交叉辊压、双面成膜,击破干法电极辊压低良率
高工锂电· 2025-05-21 10:13
Core Viewpoint - The article discusses the advancements in dry electrode technology for lithium batteries, particularly focusing on the innovative X-Roll cross-rolling technology developed by BROADENWIN, which addresses the low yield issues in dry electrode production and enhances the efficiency and quality of battery manufacturing [2][10][19]. Summary by Sections Dry Electrode Technology - The dry electrode approach offers significant advantages over traditional wet methods, including zero pollution, lower costs, higher energy density, longer cycle life, and simplified production processes [2][3]. - The industry is moving towards the commercialization of next-generation battery technologies, such as large cylindrical batteries and solid-state batteries, by 2025, which necessitates the adoption of dry electrode technology [2]. Challenges in Dry Electrode Production - The production of dry electrodes faces two main challenges: high precision pressure control and the material deformation of rollers during the rolling process [5][6]. - Tesla's experience with dry electrode technology highlights the difficulties faced in achieving consistent density and quality, leading to significant time and resource investment to resolve these issues [4][9]. Innovations by BROADENWIN - BROADENWIN's X-Roll technology introduces a dual-sided film formation process that effectively addresses the low yield issues associated with dry electrode production [10][19]. - The new equipment allows for the mixing and fiberization of active materials without the use of solvents, significantly reducing VOC emissions by over 90% and energy consumption by 40% compared to wet processes [20]. Technical Specifications and Advantages - The X-Roll technology enables precise adjustments in rolling pressure, achieving a thickness uniformity error of within ±2μm, which is a substantial improvement over traditional methods [14][18]. - The equipment can handle a wide range of materials, including silicon-carbon anodes and high-nickel cathodes, meeting the demands for high-density electrodes (>3.4g/cm³) [20]. Market Position and Future Prospects - BROADENWIN has established itself as a key player in the lithium battery equipment sector by leveraging its expertise in rolling technology from various industries [21][22]. - The ongoing technological innovations in the battery industry, including the resurgence of cylindrical batteries and solid-state battery advancements, present new market opportunities for dry electrode technology [22].