文献类型：期刊文献

英文题名：Improving the electrocatalytic performance of Pd for formic acid electrooxidation by introducing tourmaline

作者：Luo, Guoming[1];Chen, Aibing[2];Zhu, Minghui[1];Zhao, Kai[3];Zhang, Xinsheng[1];Hu, Shuozhen[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Hebei Univ Sci & Technol, Coll Chem & Pharmaceut Engn, Shijiazhuang 050018, Hebei, Peoples R China;[3]Foshan Univ, Sch Mat Sci & Energy Engn, Foshan 528000, Peoples R China

年份：2020

卷号：360

外文期刊名：ELECTROCHIMICA ACTA

收录：;EI(收录号：20203609147929);WOS:【SCI-EXPANDED(收录号:WOS:000576817900015)】；

基金：This work is financially supported by Shanghai Pujiang Program (No. 18111402000) from Science and Technology Commission of Shanghai Municipality (China), the Fundamental Research Funds for the Central Universities (No. 222201814008) (China), and the Open Project of State Key Laboratory of Chemical Engineering (No. SKL-ChE-18 C05) (China).

语种：英文

外文关键词：Formic acid electrooxidation; Palladium; Tourmaline; Electric field and far-infrared radiation; CO-tolerance

摘要：Palladium is the most effective catalyst with high initial activity for formic acid electrooxidation (FAEO) in direct formic acid fuel cells (DFAFCs), but the low performance of DFAFC comparing to H-2-PEMFC and the accumulation of COad poisoning species on palladium restrict the commercialization of DFAFC. Herein, a novel and efficient FAEO catalyst, tourmaline modified Pd (Pd/TNP@SC) are prepared. A class of core@shell structured carbon coated tourmaline (TNP@SC) are equipped as the catalyst support to efficiently utilize the spontaneous polarization-induced electric field and far-infrared radiation of tourmaline for FAEO reaction. Physical and electrochemical measurements suggest that the existence of electric field and far-infrared radiation of tourmaline promote synthesizing smaller Pd nanoparticles, weakening the Pd-O bond, increasing molecular vibration and migration rate, and dissociating water molecules into OHad to spontaneously convert COad into CO2. Even under potentials applied higher than 0.3 V (vs. Ag/AgCl), Pd/TNP@SC catalysts still have high FAEO activity. Among all the Pd/TNP@SC catalysts investigated in this study, Pd/TNP@SC-800 owns the strongest electric field and far-infrared radiation, exhibits the best activity for FAEO, which is 3.1 times higher than that of tourmaline-free catalyst (Pd/SC)), and excellent CO-tolerance during FAEO reaction. This work provides an effective catalyst design strategy for FAEO. (C) 2020 Elsevier Ltd. All rights reserved.