Optimization of graphite powder shape and trace metal characteristics

石墨粉末形状和微量金属特性的优化

• 批准号: 513322-2017
• 负责人: Donaldson, Adam
• 金额: $ 1.82万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=639284
• 关键词: Optimization; graphite; powder; shape; trace

Quality electrode materials are a key factor in the development and production of leading-edge lithium ionbatteries. Elcora is a vertically integrated graphite & graphene company. The company mines, processes, andrefines graphite, and is targeting high-end graphite markets such as Li-ion batteries. Currently, Elcora processesand spheronizes graphite powder for the Li-ion anode market. The industry prefers spherically shaped graphiteparticles to achieve the highest battery performance.This work explores the optimization of Elcora's current spheronization process and trace contaminantminimization efforts. Through collaborative development of a high-speed microscopy method for rapiddetermination of particle shape characteristics, trace contaminant analysis, and systematic processmodifications, this work intends to provide a measurable improvement in Elcora Advanced Materials divisionin Bedford, Nova Scotia. Key areas being explored are digital visual analytics suitable for high-flowmicroscopy applications with flow cell development capable of rotating particles within the flow field toelucidate information on their 3-D shape, as well as process optimization of spheronizing units used withinElcora's operations.This initiative is intended to facilitate expansion efforts in Canada-based production of value-added products,and is anticipated to contribute to development plans for a commercial scale processing facility in Nova Scotia.

高质量的电极材料是开发和生产前沿锂离子电池的关键因素。埃尔科拉是一家垂直整合的石墨和石墨烯公司。该公司对石墨进行开采、加工、再细化，并瞄准锂离子电池等高端石墨市场。目前，Elcora为锂离子阳极市场加工和球化石墨粉。业界更喜欢球形石墨颗粒，以实现最高的电池性能。这项工作探讨了埃尔科拉目前的球面化过程的优化和微量污染物最小化的努力。通过合作开发一种高速显微镜方法来快速测定颗粒形状特征、微量污染物分析和系统的工艺修改，这项工作旨在为新斯科舍省贝德福德的埃尔科拉先进材料部门提供可测量的改进。正在探索的关键领域是适用于高流量显微镜应用的数字视觉分析，流池开发能够在流场中旋转颗粒以阐明其三维形状的信息，以及elcora操作中使用的滚圆单元的工艺优化。这项倡议的目的是促进扩大在加拿大生产增值产品的努力，预计将有助于在新斯科舍省建立商业规模加工设施的发展计划。