Atomic force microscopy and scaling analysis applied to the characterization of zinc electrodeposits

原子力显微镜和标度分析应用于锌电沉积物的表征

• 批准号: 461880-2014
• 负责人: Shepherd, Jeffrey
• 金额: $ 0.53万
• 依托单位: Laurentian University of Sudbury
• 依托单位国家: 加拿大
• 项目类别: Engage Plus Grants Program
• 财政年份: 2014
• 资助国家: 加拿大
• 起止时间: 2014-01-01 至 2015-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=556479
• 关键词: Atomic; force; microscopy; scaling; analysis

This project aims to characterize and quantify the roughness of zinc electrodeposits produced at Teck Resources Limited (operations in Trail BC, Canada). In the typical industrial method of producing high-purity zinc, electrowinning is used to recover the metal at an aluminum cathode under large current densities and high-deposition rates. With these conditions, electrowinning is economical but the zinc deposits are often non-uniform and may cause cell short-circuits if the growing zinc layer makes contact with another electrode in the cell. To avoid this, a variety of organic leveling agents may be added to the zinc feed to produce smoother deposits. However, short-circuits are still a problem faced in many electrwinning operations and a better understanding of how the additives interact with the metal surface is required.

该项目旨在表征和量化Teck Resources Limited（在加拿大Trail BC运营）生产的锌电沉积物的粗糙度。在生产高纯锌的典型工业方法中，电解沉积用于在大电流密度和高沉积速率下在铝阴极处回收金属。在这些条件下，电解提取是经济的，但锌沉积物通常是不均匀的，并且如果生长的锌层与电池中的另一个电极接触，则可能导致电池短路。为了避免这种情况，可以向锌进料中添加各种有机流平剂以产生更光滑的沉积物。然而，短路仍然是许多电积操作中面临的一个问题，需要更好地了解添加剂如何与金属表面相互作用。