CuxFe12-x/Fe2O3/CuO cooperate with Pd as a highly effective and durable electrocatalyst for formate oxidation reaction

IF 3.2 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Solid State Chemistry Pub Date : 2024-12-15 DOI:10.1016/j.jssc.2024.125146

Yifeng Guo , Ya Jin , Jun Huang , Xiaojun Chen , Feng Luo , Liu Yang , Xiaodong Zhu , Xi Chen , Jiarui Wu , Tingyi Wen , Xiaoqiang Wu

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Abstract

Direct formate fuel cells (DFFCs) have been considered as ideal "green" energy converters due to their high-power density, simple structure and good safety. However, the DFFCs have not been extensively used because of the H_ads-poisoning issue on Pd-based catalysts in formate oxidation reaction (FOR). Herein, a series of Pd/Cu_xFe_12-x/Fe₂O₃/CuO (PCF-x) catalysts have been designed to solve the H_ads-poisoning problem. The results present that the Cu_xFe_12-x/Fe₂O₃/CuO (CF-x) have good OH_ads generating abilities, thereby promoting the stripping of H_ads (CF-x-OH_ads + Pd-H_ads → CF-x + Pd + H₂O) and improving the FOR performances of PCF-x. Moreover, the FOR performances of PCF-x have been studied by modifying the Cu/Fe ratio, the optimized PCF-4 has been found to have a high mass activity (6999 mA mg-1 Pd), small Tafel slope (112 mV dec⁻¹), high ECSA (87.4 m² g⁻¹), superior cyclic stability (29.2 % activity loss for 10000 CV cycles) and durability (12 h i-t with residual activity of 36.72 mA mg-1 Pd), which provides a new idea for high-performance DFFCs anode catalysts.

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来源期刊

Journal of Solid State Chemistry 化学-无机化学与核化学

CiteScore

6.00

自引率

9.10%

发文量

848

审稿时长

25 days

期刊介绍： Covering major developments in the field of solid state chemistry and related areas such as ceramics and amorphous materials, the Journal of Solid State Chemistry features studies of chemical, structural, thermodynamic, electronic, magnetic, and optical properties and processes in solids.