储能科学与技术2024，Vol.13Issue(10)：3523-3533,11.DOI:10.19799/j.cnki.2095-4239.2024.0300
便携式装置中双凸台取电微管式固体氧化物燃料电池数值模拟及实验验证
Numerical simulation and experimental verification of micro-tubular solid oxide fuel cell with double-convex platform current collector in portable device
摘要
Abstract
By leveraging the advantages of methanol steam reforming(MSR)for hydrogen production and tubular solid oxide fuel cells(SOFC),a portable hydrogen and power generation device was developed by integrating MSR with micro-tubular SOFC(μT-SOFC).A numerical model of μT-SOFC with a double-convex current collector was established and validated(error rate less than 5% )using COMSOL Multiphysics.The simulation results show that the double-convex platform current collector enhances the current collection efficiency while maintaining a small temperature difference at different voltages.MSR catalysts were prepared using the impregnation method,whereas the anode-supported μT-SOFC was fabricated using an extrusion forming-leaching process.The morphologies of the MSR catalysts and μT-SOFC were investigated using scanning electron microscopy and energy-dispersive X-ray spectroscopy.Gas chromatography of the MSR product revealed a hydrogen gas volume fraction approaching 70% .The portable device utilizes a stepper motor to control the inlet flow rate of methanol-water solution,achieving different volume flow rates of MSR gas products,with an average flow rate reaching up to 1163 mL/min.The μT-SOFC demonstrated an open circuit voltage of 0.96 V and a maximum output power density of 190 mW/cm2.After a simulated 4-hour operational test,there was no significant decline in electrochemical performance.Further simulations under these operating conditions showed that the cell performance was primarily limited by the MSR conversion efficiency.Additionally,adjusting the air inlet direction was found to enhance the output power.Currently,there are few studies on the application of μT-SOFC and related devices.This study provides guidance for the application of μT-SOFC in portable devices.关键词
甲醇水蒸气重整制氢/微管式固体氧化物燃料电池/数值模拟/制氢发电装置Key words
methanol steam reforming/micro-tubular solid oxide fuel cells/numerical simulation/hydrogen and power generation devices分类
信息技术与安全科学引用本文复制引用
陈智聪,陈皆成,杜志伟,梁波,马跃,杨华政,王陈鹏,刘颖隆,叶豪,刘佳伟,许晓茹,刘英丽..便携式装置中双凸台取电微管式固体氧化物燃料电池数值模拟及实验验证[J].储能科学与技术,2024,13(10):3523-3533,11.基金项目
国家自然科学基金项目(52076047). （52076047）
