An Effective Pd–Ni2P/C Anode Catalyst for Direct Formic Acid Fuel Cells |
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| Authors: | Jinfa Chang Dr Ligang Feng Prof Dr Changpeng Liu Prof Dr Wei Xing Prof Dr Xile Hu |
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| Institution: | 1. State Key Laboratory of Electroanalytical Chemistry, Laboratory of Advanced Power Sources, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022 (P.R. China);2. Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), ISIC‐LSCI, BCH 3305, Lausanne 1015 (Switzerland) http://lsci.epfl.ch |
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| Abstract: | The direct formic acid fuel cell is an emerging energy conversion device for which palladium is considered as the state‐of‐the‐art anode catalyst. In this communication, we show that the activity and stability of palladium for formic acid oxidation can be significantly enhanced using nickel phosphide (Ni2P) nanoparticles as a cocatalyst. X‐ray photoelectron spectroscopy (XPS) reveals a strong electronic interaction between Ni2P and Pd. A direct formic acid fuel cell incorporating the best Pd–Ni2P anode catalyst exhibits a power density of 550 mW cm?2, which is 3.5 times of that of an analogous device using a commercial Pd anode catalyst. |
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| Keywords: | electrocatalysis formic acid fuel cells oxidation nickel |
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