文献类型：期刊文献

英文题名：Positive direction of polarization-induced electric field improves formic acid electrooxidation on Pd

作者：Hu, Shuozhen[1];Cheng, Yunyun[1,2];Luo, Guoming[1,3];Huang, Kai[1];Shi, Cheng[4];Xu, Jie[5];Lian, Cheng[1];Sun, Shigang[6];Zhang, Xinsheng[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Shanghai Hydrogen Prop Technol Co Ltd, Shanghai 201800, Peoples R China;[3]Shanghai Haizhiqing Energy Dev Co Ltd, Shanghai 200333, Peoples R China;[4]Tongji Univ, Sch Mat Sci & Engn, Funct Mat Res Lab, Key Lab Adv Civil Engn Mat,Minist Educ, Shanghai 201804, Peoples R China;[5]Anhui Univ Technol, Sch Mat Sci & Engn, Maanshan 243002, Peoples R China;[6]Xiamen Univ, Coll Chem & Chem Engn, Dept Chem, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China

年份：2023

卷号：16

期号：8

起止页码：10848

外文期刊名：NANO RESEARCH

收录：;EI(收录号：20232614283821);WOS:【SCI-EXPANDED(收录号:WOS:001019304900003)】；

基金：AcknowledgementsThis work was financially supported by the National Natural Science Foundation of China (No. 22005097). The authors thank the Research Center of Analysis and Test of East China University of Science and Technology for the help on the characterization. The authors would like to thank the shiyanjia lab (https://www.shiyanjia.com) for the XPS test.

语种：英文

外文关键词：dipole-aligned tourmaline; ferroelectric material; polarization-induced electric field direction; palladium; adsorption energy; formic acid oxidation mechanism

摘要：Adjusting the adsorption energy of adsorbates on catalyst can directly regulate the catalytic performance and reaction pathways of heterogeneous catalysis. Herein, we report a novel strategy, introducing polarization-induced electric field (PIEF) with different directions, to manipulate the adsorption energy of intermediates and reaction pathway of formic acid electrooxidation on Pd. Tourmaline nanoparticles are applied as the PIEF provider, of which the direction is successfully controlled via aligning the dipoles in tourmaline in a strong external electric field. Experimental and theoretical results systematically reveal that positive PIEF leads to an electron-deficient state of Pd, reduced adsorption energy of COad, enhanced adsorption energy of *HCOOH and *OH, and promoted formate pathway of formic acid electrooxidation. Pd/TNP+/FTO, with the aid of positive PIEF, shows three-fold enhancement in the formic acid electrooxidation (4.74 mA center dot cm(-2)) with high durability and anti-poisoning ability compared with pristine Pd. This study leads a new route to design formic acid electrocatalysts and provides an understanding on how to control the adsorption energy of adsorbates on electrocatalysts by an internal electric field.