文献类型：期刊文献

英文题名：Engineering FeP4/CoFe2O4 heterostructure with balanced proton adsorption ability for efficient hydrogen evolution reaction

作者：Zhao, Rukai[1];Chang, Wanjun[1];Zhu, Zhengju[1];Cheng, Qilin[1];Jiang, Hao[1]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Mat Sci & Engn, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China

年份：2022

卷号：598

外文期刊名：APPLIED SURFACE SCIENCE

收录：;EI(收录号：20222212173279);WOS:【SCI-EXPANDED(收录号:WOS:000817822800002)】；

基金：Acknowledgements This work was supported by the National Natural Science Foundation of China (22108079) , Shanghai Pujiang Program (21PJD018) , China Postdoctoral Science Foundation (2020 M681208) , the Science and Technology Commission of Shanghai Municipality (18520744400) .

语种：英文

外文关键词：Electrocatalysts; CoFe2O4; Overpotential; Hydrogen evolution reaction; Water splitting

摘要：Developing cost-efficient electrocatalysts for hydrogen evolution reaction (HER) with low overpotential, fast kinetics and good stability is one of the challenges to promote the industrial application of water electrolysis technology. Herein, we construct a novel heterostructure electrocatalyst with abundant FeP4 nanoparticles grown on the surface of CoFe2O4 nanosheets for efficient HER catalysis. FeP4, as the crucial co-catalyst, not only promotes the proton adsorption process due to its large electronegativity but also improves the electron structure around the Co sites for optimizing H* coupling and H-2 evolution process. Consequently, the FeP4/CoFe2O4 heterostructure electrocatalyst shows a much improved HER performance (eta 100 = 168 mV) and a faster reaction kinetics by comparing with the pristine FeP4 and CoFe2O4. Further electrochemical characterization demonstrates that the heterostructure is also beneficial to increase active sites and enhance intrinsic activity. This work provides a feasible perspective for constructing heterostructure to acquire excellent HER catalysts.