带有突扩比的新型流道结构对海水激活电池性能的影响OA

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.