阳极
直接甲醇燃料电池
体积流量
电流(流体)
材料科学
气泡
体积分数
机械
流量(数学)
工作温度
甲醇燃料
分析化学(期刊)
核工程
燃料电池
化学工程
化学
电极
复合材料
电气工程
工程类
色谱法
物理
物理化学
作者
Zhenyu Yuan,Jie Yang,Zipeng Li,Yuge Sun,Ning Ye,Hongyuan Shen
出处
期刊:Energy
[Elsevier]
日期:2015-04-01
卷期号:83: 496-502
被引量:10
标识
DOI:10.1016/j.energy.2015.02.053
摘要
In this paper, the behavior of CO2 transmission in a micro direct methanol fuel cell (μDMFC) is investigated through both simulations and experiments. A model is built to describe the change of CO2 volume fraction in the anode channel under different operation parameters (e.g., current density, flow rate and operation temperature). In addition, the dynamic movement of a single CO2 bubble is also simulated to study the CO2 characteristics. Furthermore, a metal-based transparent μDMFC with the active area of 0.8 cm × 0.8 cm is designed and fabricated to evaluate the two-phase flow characteristic as well as the corresponding cell performance. Experimental results reveal that the operating current, the flow rate and the temperature can significantly influence the quantity and shape of CO2 bubbles: 1) small discrete bubbles can grow up to a gas column with the increase of operating current; 2) the amount and the size of CO2 bubbles will decrease with the increase of the flow rate; 3) higher operating temperature will prompt the size of CO2 bubbles. The experimental results are well in agreement with the simulation.
科研通智能强力驱动
Strongly Powered by AbleSci AI