水诱导固体电解质界面调控的连续流电化学合成氨
Water-Driven Solid Electrolyte Interphase Governs Continuous-Flow Ammonia Electrosynthesis
摘要
Abstract
Flow-cell architectures have emerged as a powerful platform for continuous and stable lithium-mediated nitrogen re-duction(Li-NRR),enabling ambient-condition electrochemical ammonia synthesis and offering a promising alternative to Haber-Bosch processes.However,Li-NRR is exceptionally sensitive to trace water,and even minor variations in water con-tent can profoundly alter interfacial chemistry.Here,we systematically investigate how initial water concentration affects Li-NRR performance in a continuous-flow cell.Excess water drives the formation of a thick solid electrolyte interphase(SEI)layer,which may impede nitrogen access to metallic lithium and hinder lithium-ion transport.As a result,the ammonia Faradaic efficiency collapses from～61%to～3%.These findings reveal the decisive,previously underappreciated role of water in governing SEI evolution and highlight the necessity of precise water control for achieving stable,high-efficiency continuous-flow Li-NRR.关键词
水/固体电解质界面层/连续流反应器/锂介导氮还原/合成氨Key words
Water/Solid electrolyte interphase/Continuous-flow cell/Lithium-mediated nitrogen reduction/Ammonia synthesis引用本文复制引用
刘鹏博,翟盛良,黄继,张衷硕,曾杰,李少锋..水诱导固体电解质界面调控的连续流电化学合成氨[J].电化学（中英文）,2026,32(4):1-11,11.基金项目
Shao-Feng Li acknowledges the National Natural Science Foundation of China(22579157),the robotic AI-Scientist platform of the Chinese Academy of Sci-ences,the Fundamental Research Funds for the Cen-tral Universities(WK2060250114),the Major Frontier Research Project of the University of Science and Tech-nology of China(LS2060000002).This work was sup-ported by National Key Research and Development Program of China(2021YFA1500500),CAS Project for Young Scientists in Basic Research(YSBR-051),NSFC(22525021,22221003,22250007,22361162655),the Science and Technology Development Fund(FDCT)of Macao S.A.R(0070/2023/AFJ),Fundamental Re-search Funds for the Central Universities,the State Key Laboratory of Catalysis(2024SKL-A-011),and In-ternational Partnership Program of Chinese Academy of Sciences(123GJHZ2022101GC).Jie Zeng acknowl-edges support from the New Cornerstone Science Foundation through the XPLORER PRIZE.This work was partially carried out at the Instruments Center for Physical Science,University of Science and Tech-nology of China.This work was also partially carried out at the USTC Center for Micro and Nanoscale Re-search and Fabrication.We thank Sheng-Quan Fu at Instruments Center for Physical Science,University of Science and Technology of China for provision air-sensitive sample transfer system equipped on CIQTEK Co.,Ltd.,FESEM5000X to complete SEM surface picture and EDS measurements and charac-terizations.Sheng-Liang Zhai acknowledges the Chi-na Postdoctoral Science Foundation(2025M781033). （22579157）
