摘要
铝电解阳极气泡成核机理的解析是优化电解能耗与效率的重要突破口。本文采用高温透明电解槽,研究了阳极表面微观形貌与电流密度对铝电解阳极气泡成核的作用机制。结果表明:气泡成核位点呈现短时空间稳定性,由亚微米级表面形貌主导,而非宏观孔隙;气泡成核密度与电流密度呈现正相关关系,其通过增强局部气体过饱和度与压缩扩散抑制区范围实现调控。本文为工业电解槽阳极微观结构与工艺参数优化提供一定理论依据。
The precise understanding of bubble nucleation mechanisms at aluminum electrolysis anodes is a critical step toward optimizing energy consumption and efficiency in electrolysis processes.This study employed a high-temperature transparent electrolytic cell to investigate the effects of surface microstructure and current density on bubble nucleation dynamics at aluminum electrolysis anodes.The results demonstrated that bubble nucleation sites exhibit short-term spatial stability,predominantly governed by submicron-scale surface morphological features rather than macro-pores.A nonlinear positive correlation exists between current density and nucleation frequency driven by the synergistic effects of enhanced local gas supersaturation and compression of the diffusion-inhibited zone at elevated current densities.These findings provide theoretical foundations for designing electrode microstructures and optimizing operational parameters in industrial electrolytic cells.
作者
黄义鹏
刘庆生
Huang Yipeng;Liu Qingsheng(School of Metallurgical Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China)
出处
《轻金属》
2025年第9期1-6,共6页
Light Metals
基金
国家自然科学基金项目(52274350)。
关键词
铝电解
高温透明槽
气泡成核
电流密度
微观结构
aluminum electrolysis
high-temperature transparent cell
bubble nucleation
current density
microstructure
