Direct peroxide–peroxide fuel cell – Part 2: Effects of conditions on the performance

• Published in: Journal of power sources 2012-11, Vol.217, p.569-573
• Main Authors: Yang, Fan, Cheng, Kui, Liu, Xiuling, Chang, Sha, Yin, Jingling, Du, Chunyu, Du, Lei, Wang, Guiling, Cao, Dianxue
• Format: Article
• Language: English
• Subjects: Applied sciences; Carbon fiber cloth; Dendritic palladium; Direct energy conversion and energy accumulation; Direct fuel cell; Electrical engineering. Electrical power engineering; Electrical power engineering; Electrochemical conversion: primary and secondary batteries, fuel cells; Energy; Energy. Thermal use of fuels; Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc; Exact sciences and technology; Fuel cells; Hydrogen peroxide
• ISSN: 0378-7753; 1873-2755
• DOI: 10.1016/j.jpowsour.2012.06.079

A high performance direct peroxide–peroxide fuel cell using dendritic Pd supported on carbon fiber cloth as both the anode and the cathode is reported. Effects of the concentration of H2O2, KOH, H2SO4, the operating temperature and the flow rate on the fuel cell performance are investigated. The cell exhibits a much higher performance than those reported in the literature. The open circuit voltage reaches 0.9 V and the peak power density is as high as 14.3 and 58.4 mW cm−2 at 20 °C and 60 °C, respectively, when running on 4.0 mol L−1 KOH + 1.0 mol L−1 H2O2 as the fuel and 2.0 mol L−1 H2SO4 + 2.0 mol L−1 H2O2 as the oxidant, both at a flow rate of 10 mL min−1. ► A high performance direct peroxide–peroxide fuel cell (DPPFC) is demonstrated. ► The Pd/CFC electrode is a good catalyst for the anode and cathode reactions. ► The DPPFC displays a peak power density of 14.3 mW cm−2 at 20 °C.