کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6614126 | 459620 | 2014 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Direct sorbitol proton exchange membrane fuel cell using moderate catalyst loadings
ترجمه فارسی عنوان
سلول سوختی غشایی مبدل پروتون تبادل مستقیم با استفاده از بارهای کاتالیست متوسط
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
چکیده انگلیسی
Recent progress in biomass hydrolysis has made it interesting to study the use of sorbitol for electricity generation. In this study, sorbitol and glucose are used as fuels in proton exchange membrane fuel cells having 0.9 mg cmâ2 PtRu/C at the anode and 0.3 mg cmâ2 Pt/C at the cathode. The sorbitol oxidation was found to have slower kinetics than glucose oxidation. However, at low temperatures the direct sorbitol fuel cell shows higher performance than the direct glucose fuel cell, attributed to a lower degree of catalyst poisoning. The performance of both fuel cells is considerably improved at higher temperatures. High temperatures lower the poisoning, allowing the direct glucose fuel cell to reach a higher performance than the direct sorbitol fuel cell. The mass specific peak power densities of the direct sorbitol and direct glucose fuel cells at 65 °C was 3.2 mW mgâ1catalyst and 3.5 mW mgâ1catalyst, respectively. Both of these values are one order of magnitude larger than mass specific peak power densities of earlier reported direct glucose fuel cells using proton exchange membranes. Furthermore, both the fuel cells showed a considerably decrease in performance with time, which is partially attributed to sorbitol and glucose crossover poisoning the Pt/C cathode.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 116, 10 January 2014, Pages 379-387
Journal: Electrochimica Acta - Volume 116, 10 January 2014, Pages 379-387
نویسندگان
Alejandro Oyarce, Carlos Gonzalez, Raquel Bohn Lima, Rakel Wreland Lindström, Carina Lagergren, Göran Lindbergh,