Characterization of a high performing passive direct formic acid fuel cell |
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| Affiliation: | 1. Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong SAR, China;2. Key Laboratory of Low-grade Energy Utilization Technologies and Systems (Chongqing University), Ministry of Education, Chongqing 400030, China;3. Institute of Engineering Thermophysics, Chongqing University, Chongqing 400030, China;1. School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China;2. Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China;1. College of Electronic and Information Engineering, Hangzhou Dianzi University, Hangzhou, 310018, China;2. MEMS Center, Harbin Institute of Technology, Harbin, 150001, China;1. Institute for Energy Research, Jiangsu University, Zhenjiang 212013, China;2. School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, China;3. Faculty of Engineering and the Environment, University of Southampton, Southampton SO17 1BJ, UK;4. Institute of Green Chemistry and Chemical Technology, Jiangsu University, Zhenjiang 212013, China;5. School of Materials Science and Engineering, Sun Yat-Sen University, Guangzhou 510006, China |
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| Abstract: | Small fuel cells are considered likely replacements for batteries in portable power applications. In this paper, the performance of a passive air breathing direct formic acid fuel cell (DFAFC) at room temperature is reported. The passive fuel cell, with a palladium anode catalyst, produces an excellent cell performance at 30 °C. It produced a high open cell potential of 0.9 V with ambient air. It produced current densities of 139 and 336 mA cm−2 at 0.72 and 0.53 V, respectively. Its maximum power density was 177 mW cm−2 at 0.53 V. Our passive air breathing fuel cell runs successfully with formic acid concentration up to 10 and 12 M with little degradation in performance. In this paper, its constant voltage test at 0.72 V is also demonstrated using 10 M formic acid. Additionally, a reference electrode was used to determine distinct anode and cathode electrode performances for our passive air breathing DFAFC. |
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