Experimental analysis on the influence of cathode current-collector open ratio on the performance of an air breathing direct methanol fuel cell (AB-DMFC) with the addition of alkali solution

Ramesh Manupati, G Naga Srinivasulu
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Abstract

Research efforts have been centred on creating potential methods for producing green energy. A viable choice in this regard is fuel cells. Air breathing direct methanol fuel cell (AB-DMFC) is one of the many types of fuel cells, that is becoming increasing popular as a source of electricity for recharging portable electronic devices. The current study examined AB-DMFC performance equipped with various open ratio (OR)’s of cathode current collector (CC) such as 38.5%, 45.4%, and 55.4%. The cathode CC in an AB-DMFC is extremely vital to the operation of the fuel cell since it collects electrons, promotes oxygen flow for the cathode reaction and removes water bubbles produced at the cathode side, among other critical functions. For each open ratio of CC, the anodic fuel is supplied by external components like pumps with a concentration range of 1 M to 4 M methanol. When compared to other two open ratios, the experimental findings demonstrated that CC with a 45.4% OR at 2M of methanol concentration generated maximum power density (MPD) of 7.75 mW/cm2. The next stage of experiments continued with the addition of alkali solution (NaOH) to methanol fuel, and it was found that adding alkali solution to methanol fuel enhanced the MPD of 8.5 mW/cm2 and decreased methanol cross over compared with conventional AB-DMFC.

Abstract Image

添加碱溶液的空气呼吸直接甲醇燃料电池(AB-DMFC)阴极电流-集电极开度比对其性能影响的实验分析
研究工作主要集中在创造生产绿色能源的潜在方法上。在这方面,燃料电池是一个可行的选择。空气呼吸直接甲醇燃料电池(AB-DMFC)是多种类型燃料电池中的一种,作为便携式电子设备充电的电力来源,它正变得越来越受欢迎。目前的研究考察了配备不同开放比(OR)阴极集流器(CC)(如 38.5%、45.4% 和 55.4%)的 AB-DMFC 性能。AB-DMFC 中的阴极 CC 对燃料电池的运行至关重要,因为它能收集电子、促进阴极反应所需的氧气流动、去除阴极产生的水泡以及其他关键功能。在 CC 的每种开放比率中,阳极燃料由泵等外部元件提供,浓度范围为 1 M 至 4 M 甲醇。与其他两个开放比相比,实验结果表明,在甲醇浓度为 2M 时,OR 值为 45.4% 的 CC 产生的最大功率密度(MPD)为 7.75 mW/cm2。下一阶段的实验继续在甲醇燃料中添加碱溶液(NaOH),结果发现,与传统 AB-DMFC 相比,在甲醇燃料中添加碱溶液可提高 MPD(8.5 mW/cm2),并减少甲醇交叉。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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