化工学报2026，Vol.77Issue(5)：2553-2565,13.DOI:10.11949/0438-1157.20251123
带有突扩比的新型流道结构对海水激活电池性能的影响
The impact of novel flow channel structure with sudden-expansion ratio on seawater-activated battery
摘要
Abstract
The flow channel structure plays a crucial role in ensuring uniform electrolyte distribution and reducing pumping power consumption,directly affecting the overall performance of seawater-activated batteries.Based on the traditional straight-through flow channel structure,this paper proposes three new flow channel structures with expansion ratios.An electrochemical-fluid multi-physics coupling model suitable for the simulation of the seawater-activated battery system is established,and discharge performance experiments of the battery are carried out simultaneously for comparison and verification with the simulation results.Subsequently,this paper further explores the electrolyte flow characteristics and electrochemical performance of the battery during operation under high current density conditions.The results show that under the operating conditions of 300 ml/min electrolyte flow rate and 600 mA/cm2 current density,the seawater-activated battery with the inlet/outlet asymmetric sudden-expansion ratio flow channel structure exhibits a higher electrolyte uniformity factor(0.866),the lowest pumping power consumption(19.92 mW),and the longest effective discharge time(714.00 s).This novel flow channel structure shows significant potential in the engineering applications of seawater-activated batteries.关键词
海水激活电池/突扩比/数值模拟/流道结构/对流/传质/电化学Key words
seawater-activated battery/sudden-expansion ratio/numerical simulation/flow channel structure/convection/mass transfer/electrochemistry分类
信息技术与安全科学引用本文复制引用
陈培强,郑群,姜玉廷,陈今茂,王旭东,黄龙,苏醒,阮曼,徐万里..带有突扩比的新型流道结构对海水激活电池性能的影响[J].化工学报,2026,77(5):2553-2565,13.基金项目
国家自然科学基金项目(52071107) （52071107）
