液态电解质和液流电解质对空气呼吸直接甲醇燃料电池(ABDMFC)性能的影响

IF 2.2 4区 化学 Q2 Engineering Chemical Papers Pub Date : 2024-09-21 DOI:10.1007/s11696-024-03691-0
Ramesh Manupati, G. Naga Srinivasulu, Gundalabhagavan Amarnath
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引用次数: 0

摘要

由于电力需求增加、油价波动和环境问题,可再生能源的使用正变得越来越普遍。空气呼吸直接甲醇燃料电池(ABDMFCs)充电快、效率高、寿命长、燃料成本低、污染小且运行安静,因此为小功率和便携式应用提供了一种前景广阔的替代能源。本文报告了 ABDMFC 实验研究的三个阶段。在第一阶段,我们研究了阴极集流器设计对阳极采用单蛇形(1-S)石墨流场设计的传统 ABDMFC 性能的影响,并改变了甲醇浓度和甲醇流速,实现了 6.8 mW/cm2 的功率密度。第二阶段是在甲醇燃料中加入 NaOH(液态流动电解质-FE),将功率密度提高到 7.5 mW/cm2,并减少了甲醇交叉。在第三阶段,在两个膜电极组件(MEA)之间引入液态电解质(LE)层,进一步将功率密度提高到 8.32 mW/cm2,并减少了甲醇交叉。与传统 ABDMFC 相比,添加 NaOH 和 LE 可分别将功率密度提高 10.3% 和 22.35%。
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Influence of liquid electrolyte and liquid flowing electrolyte on the performance of an air breathing direct methanol fuel cell (ABDMFC)

The use of renewable energy is becoming common due to increased power demand, fluctuating oil prices, and environmental concerns. Air breathing direct methanol fuel cells (ABDMFCs) offer a promising alternative for low-power and portable applications due to their quick recharging, high efficiency, long lifespan, low fuel cost, reduced pollution, and quiet operation. This paper reports on three stages of experimental research on ABDMFCs. In the first stage, we examined the influence of cathode current collector design on the performance of conventional ABDMFC with a single serpentine (1-S) graphite flow field design at anode, and changed methanol concentrations and the methanol flow rates, achieving a power density of 6.8 mW/cm2. The second stage involved adding NaOH (liquid flowing electrolyte—FE) to the methanol fuel, which increased the power density to 7.5 mW/cm2 and reduced methanol crossover. In the third stage, introducing a liquid electrolyte (LE) layer between two membrane electrode assemblies (MEAs) further improved the power density to 8.32 mW/cm2, reducing methanol crossover. Compared to conventional ABDMFCs, the addition of NaOH and the LE improved power density by 10.3% and 22.35%, respectively.

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来源期刊
Chemical Papers
Chemical Papers Chemical Engineering-General Chemical Engineering
CiteScore
3.30
自引率
4.50%
发文量
590
期刊介绍: Chemical Papers is a peer-reviewed, international journal devoted to basic and applied chemical research. It has a broad scope covering the chemical sciences, but favors interdisciplinary research and studies that bring chemistry together with other disciplines.
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