文献类型：期刊文献

英文题名：Tri-functional Fe-based electrocatalyst with sturdy three-dimensional frame construction for the ORR, OER and HER

作者：Liang, Haixia[1];Li, Jian[2];Zhang, Jinli[1,3];Peng, Wencai[1];Li, Jun[4];Liu, Jichang[5]

机构：[1]Sch Chem & Chem Engn, State Key Lab Incubat Base Green Proc Chem Engn, Shihezi 832003, Xinjiang, Peoples R China;[2]Yunnan Precious Met Lab Co Ltd, Kunming 650106, Peoples R China;[3]Tianjin Univ, Collaborat Innovat Ctr Chem Sci & Chem Engn Tianji, Key Lab Syst Bioengn MOE, Tianjin 300072, Peoples R China;[4]Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China;[5]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2024

卷号：12

期号：30

起止页码：19344

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20242816683953);WOS:【SCI-EXPANDED(收录号:WOS:001262512500001)】；

基金：The works were supported by the Major Science and Technology Project of Xinjiang Bingtuan (2020AA004), the Major Science and Technology Project of Bashi Shihezi City (2020ZD02), the National Natural Science Foundation of China (NSFC Grant No. 21968029), the Major Science and Technology Project of Xinjiang Bingtuan (2017AA007) and the Applied basic Research Program of Xinjiang Bingtuan (2015AG004).

语种：英文

外文关键词：Electrocatalysis - Electrolytic reduction - Iron compounds - Oxygen - Silica - Silicon - Zinc air batteries

摘要：Oxygen reduction reaction (ORR), oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) electrocatalysis have an important role in rechargeable zinc-air batteries (ZABs) and water splitting and have received extensive attention over the years. Therefore, the design and development of efficient and economical multifunctional electrocatalysts is currently considered an important subject in the field of green and renewable energy. In this paper, a simple and reproducible SiO2 templating strategy is designed to utilize natural hemin as a source of Fe-N-C material. Hemin is adsorbed onto the surface of SiO2 through electrostatic interaction, which allows hemin to stretch along the surface of SiO2 spheres during high-temperature pyrolysis. The final product named Fe3C-Fe/NC-800 with abundant cavities and a sturdy 3D framework structure shows excellent ORR, OER and HER activities. Theoretical calculations show that the synergistic interaction between Fe3C and FeN4 sites reduces the energy barrier during the electrochemical reaction and improves the ORR, OER, and HER performance. Based on its superior tri-functional activity, Fe3C-Fe/NC-800 finds potential applications in ZABs and overall water-splitting devices. This work will provide insights into the design and preparation of electrocatalysts used in clean energy conversion devices. The catalyst Fe3C-Fe/NC-800 with a hollow interconnected honeycomb structure was prepared using a hard template strategy. It showed excellent ORR, OER and HER properties and favourable applications in ZABs and the overall water splitting device.