化工学报Issue(z1)：83-89,7.DOI:10.11949/j.issn.0438-1157.20170610
直接甲醇燃料电池阴极水的传输特性
Transmission characteristics of cathode water in direct methanol fuel cell
蒋静慧 1巩亮 2李印实1
作者信息
- 1. 中国石油大学(华东)储运与建筑工程学院热能工程系,山东 青岛 266580
- 2. 西安交通大学能源与动力工程学院,热流科学与工程教育部重点实验室,陕西 西安 710049
- 折叠
摘要
Abstract
The characteristic of cathode water transport in direct methanol fuel cell was investigated using COMSOL Multiphysics,including the effect of the distribution of pressure,velocity,water,oxygen and liquid saturation,as well as diffusion layer under different physical parameters,such as thickness,porosity,size and hydrophobicity.A further mathematical model of diffusion layer with gradient porosity distribution was established to study the effect of porosity gradient and support layer parameters on cell performance and mass transfer.The results show that the diffusion layer with high porosity and thin layer is beneficial to oxygen transfer.The gradient porosity distribution of diffusion layer can reduce oxygen transport resistance,and thus improving the cell performance.关键词
燃料电池/相变/多孔介质/传质/数值模拟Key words
fuel cell/phase change/porous media/mass transfer/numerical simulation 分类
能源科技引用本文复制引用
蒋静慧,巩亮,李印实..直接甲醇燃料电池阴极水的传输特性[J].化工学报,2017,(z1):83-89,7.
