Effects of composition on electrochemical properties of a non-precious metal catalyst towards oxygen reduction reaction |
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| Authors: | Xianxia Yuan Hai-Chuan Kong Yi-Jun He Zi-Feng Ma Yong Yang Qian Li |
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| Affiliation: | 1. Department of Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;2. State Key Laboratory of Physical Chemistry of Solid Surface & Department of Chemistry, Xiamen University, Xiamen 361005, China;3. Shanghai Key Laboratory of Modern Metallurgy & Materials Processing, Shanghai University, Shanghai 200072, China |
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| Abstract: | A family of non-precious metal catalysts, Co-PPy-TsOH/C, has been synthesized with different amount of pyrrole and p-toluenesulfonic acid (TsOH). Elemental contents of Co, N, C, S, H and O in the obtained catalysts have been measured with physicochemical techniques and the performance of these catalysts towards oxygen reduction reaction (ORR) have been evaluated with electrochemical techniques. Then, the results obtained have been discussed with principal component analysis and linear correlation analysis to find the correlation/anticorrelation between the composition and electrochemical properties. It is revealed that the used amount of pyrrole has much more apparent effect than TsOH on elemental contents in the Co-PPy-TsOH/C catalysts, while both of them influence the ORR activity and mechanism of the catalysts. Besides, the effects of the contents of each element on the electrochemical performance have also been analyzed to guide the future development of similar catalysts. |
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| Keywords: | Oxygen reduction reaction Non-precious metal catalyst Composition Elemental content Catalytic property |
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