Regulate electric double layer for one-step synthesize and modulate the morphology of(oxy)hydroxides  

作　　者：Jiaxin Liu Yue Shi Yanli Gu Zheng Lv Liang Zhao Yu Yang Tianrong Zhan Jianping Lai Lei Wang 

机构地区：[1]State Key Laboratory Base of Eco-Chemical Engineering,International Science and Technology Cooperation Base of Eco-chemical Engineering and Green Manufacturing,College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao 266042,China [2]Shandong Engineering Research Center for Marine Environment Corrosion and Safety Protection,College of Environment and Safety Engineering,Qingdao University of Science and Technology,Qingdao 266042,China

出　　处：《Nano Research》2024年第5期3675-3683,共9页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.22001143,52072197);the Youth Innovation and Technology Foundation of Shandong Higher Education Institutions,China(No.2019KJC004);the Outstanding Youth Foundation of Shandong Province,China(No.ZR2019JQ14);the Taishan Scholar Young Talent Program(Nos.tsqn201909114,tsqn201909123);the Natural Science Foundation of Shandong Province(No.ZR2020YQ34);the Major Scientific and Technological Innovation Project(No.2019JZZY020405);the Major Basic Research Program of Natural Science Foundation of Shandong Province under Grant No.ZR2020ZD09.

摘　　要：FeOOH have received considerable attention due to their natural abundance and cost-effectiveness.Despite the significant progress achieved,the one-step synthesis of integrated FeOOH is still a major challenge.Meanwhile,the current research on FeOOH catalyst still suffers from the unclear mechanism of controlling morphology.Here,density functional theory(DFT)calculations and X-ray photoelectron spectroscopy(XPS)demonstrated the strong electron-capturing and hydrogen absorption ability of Co in FeOOH,which further promotes the formation and stabilization of FeOOH.We used a one-step electrodeposition method to synthesize Co introduced FeOOH integrated electrocatalyst and propose to introduce ions with different valence states to regulate the morphology of FeOOH by precise modulation of electric double layer(EDL)composition and thickness.The prepared Co-FeOOH-K^(+)has a larger electrochemically active surface area(ECSA)(325 cm^(2))and turnover frequency(TOF)value(0.75 s^(-1)).In the electrochemical experiments of an alkaline anion exchange membrane electrolyzer,Co-FeOOH-K^(+)shows better oxygen evolution performance than commercial RuO_(2) under industrial production conditions and has good industrial application prospects.

关 键 词：integrated(oxy)hydroxides electrodeposition electric double layer(EDL) oxygen evolution reaction(OER) morphology regulation 

分 类 号：O62[理学—有机化学]