Surface-clean low-doped PdB/C as superior electrocatalysts toward ethanol oxidation in alkaline media

作     者：Yuan-Fang Wang Chan Zhu Yao-Yue Yang Zhi-Gang Zhao 

作者机构：College of Chemistry and Environmental Protection EngineeringSouthwest Minzu University 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2018年第27卷第2期

页      面：389-394页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：supported by NSFC (No.21603177) the Natural Science Foundation of Sichuan Province (No.2016JY0212) the Fundamental Research Funds for the Central Universities (No.2017NGJPY05) the Innovation Funds for SMU students (No. 201710656023) 

主　　题：EOR Surface-clean low-doped PdB/C Alkaline media Geometric and electronic effects 

摘      要：Developing highly active, low-cost and organic surfactants-free Pd-based catalysts for ethanol oxidation reaction（EOR） is now critically important for direct ethanol fuel cells. Herein, surface-clean low-doped PdB/C catalysts（typically ca. 1.5 at% of B） are successfully prepared in an aqueous condition without adding any organic surfactants. TEM characterization shows that as-prepared low-doped Pd B nanoparticles are evenly distributed on carbon support. Cyclic voltommagrams of as-prepared low-doped PdB/C in 0.5 M NaOH ＋ 1 M C2H5OH indicate that its onset oxidation potential of ethanol is ca. 80-120 mV more negative than that on commercial Pd/C. Meanwhile, the EOR mass activity of our home-made catalysts is up to 4018 m A·mg-1 Pd. Moreover, the durability on low-doped PdB/C catalysts is at most 2 times higher than that on commercial Pd/C. Geometric and electronic effects are adopted to understand the above mentioned enhancement of activity and durability. This work may provide a facile, low-cost and green strategy on preparing electrocatalysts toward EOR in alkaline media.