| مطالعه الکتروکاتالیزوری متانول بوسیله ی الکترود خمیرکربن اصلاح شده ی زئولیتی با سورفکتانت و یون های نیکل |
| کد مقاله : 1183-17THECSI |
| نویسندگان |
|
مریم ابریشم کار *، حسین کردانی گروه شیمی، دانشگاه آزاد اسلامی واحد اهواز، اهواز، ایران |
| چکیده مقاله |
| Direct-methanol fuel cells or DMFCs are a subcategory of proton-exchange fuel cells in which methanol is used as the fuel. Their main advantage is the ease of transport of methanol, an energy-dense yet reasonably stable liquid at all environmental conditions [1, 2]. Whilst the thermodynamic theoretical energy conversion efficiency of a DMFC is 97%; the currently achievable energy conversion efficiency for operational cells attains 30% – 40%. There is intensive research on promising approaches to increase the operational efficiency. A more efficient version of a direct fuel cell would play a key role in the theoretical use of methanol as a general energy transport medium, in the hypothesized methanol economy [3, 4]. In this study, a new carbon paste electrode modified with zeolite and surfactant was fabricated as novel electrode for methanol oxidation. The mentioned electrode can be used as working electrode for methanol fuel cell. The optimum conditions were tested and obtained results showed that the modified electrode had a significant increase in electron transfer rate compared to the unmodified carbon paste electrode. The catalytic rate constant for electrocatalytic reaction was calculated 6.4*104 cm2s-1mol-1 and the diffusion coefficient for this reaction was 8.2*10-5Cm2s-1. |
| کلیدواژه ها |
| متانول، الکترود اصلاح شده، پیل سوختی، کرونوآمپرومتری، سورفاکتنت |
| وضعیت: چکیده برای ارائه به صورت پوستر پذیرفته شده است |