Pub Date : 2022-04-30DOI: 10.33736/jaspe.4681.2022
Abdul Rahman, N., Muhammad Firdaus Kumar, N. K., Gilan , U. J., Jihed, E. E., Phillip , A., Linus, A. A., Nen@Shahinan, D., Ismail, V.
In the article “Kinetic Study & Statistical Modelling of Sarawak Peat Water Electrocoagulation System using Copper and Aluminium Electrodes” by Nazeri Abdul Rahman, Nurhidayah Kumar Muhammad Firdaus Kumar, Umang Jata Gilan, Elisa Elizebeth Jihed, Adarsh Phillip, Allene Albania Linus, Dasima Nen@Shahinan, and Verawaty Ismail (Journal of Applied Science & Process Engineering, 2020, Vol 7, No. 1, pp 439–456. https://doi.org/10.33736/jaspe.2195.2020), there was an error in the Manuscript History. The stated history noted that the manuscript was received on 29 April 2020. The receipt date of the manuscript should have been stated as 9 April 2020.
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Pub Date : 2022-04-30DOI: 10.33736/jaspe.4592.2022
Christopher Janting LIEW CHALU
Mathematical modelling was developed for direct ethanol fuel cell (DEFC) by considering electrochemical reactions and mass transport. The model was validated against experimental data from previous research and showed good agreement with the data. The developed mathematical modelling for this research was based on the Butler-Volmer equation, Tafel equation and Fick’s law. The model was used to investigate parameters such as ethanol concentration and cell operating temperature. The developed mathematical model simulated the data from previous research. Ethanol concentration played a vital role to achieve high-performance DEFC. The higher the ethanol concentration, the higher current could be generated in DEFC. Nonetheless, the higher the usage of the ethanol concentration, the higher the ethanol crossover might occur. The highest current density produced from the fuel cell was at 21.48 mA cm-2, for 2M of ethanol concentration. Operating temperature also affected cell performance. The higher the operating temperature, the higher power density could be generated—the peak power density of 5.7 mWcm-2 at 75 oC with 2M of ethanol. As for ethanol crossover, the highest ethanol crossover was at 12.4 mol m-3 for 3M concentration of ethanol. It proved that higher ethanol concentration led to higher ethanol crossover.
考虑电化学反应和质量传递，建立了直接乙醇燃料电池(DEFC)的数学模型。该模型与前人研究的实验数据进行了验证，结果与实验数据吻合较好。本研究开发的数学模型是基于Butler-Volmer方程、Tafel方程和Fick定律。该模型用于考察乙醇浓度和细胞工作温度等参数。开发的数学模型模拟了以前研究的数据。乙醇浓度对实现高性能DEFC起着至关重要的作用。乙醇浓度越高，DEFC产生的电流越大。然而，乙醇浓度越高，乙醇交叉越容易发生。当乙醇浓度为2M时，燃料电池产生的最高电流密度为21.48 mA cm-2。工作温度也会影响电池的性能。工作温度越高，产生的功率密度越高，在75℃，乙醇浓度为2M时，功率密度峰值为5.7 mWcm-2。在乙醇交叉方面，当乙醇浓度为3M时，最高的乙醇交叉为12.4 mol m-3。结果表明，乙醇浓度越高，乙醇交叉越高。
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