文献类型：期刊文献

英文题名：Self-sustaining alkaline seawater electrolysis via forward osmosis membranes

作者：Shi, Ke[1];Wan, Hongyi[1,3];Wang, Keyu[1];Fang, Fumohan[1];Li, Shiyi[1];Wang, Yixing[1,2];Lei, Linfeng[1,2];Zhuang, Linzhou[1];Xu, Zhi[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Suzhou Lab, Suzhou 215000, Peoples R China;[3]Hunan Inst Sci & Technol, Dept Chem & Chem Engn, Yueyang 414000, Hunan, Peoples R China

年份：2025

卷号：10

期号：3

起止页码：518

外文期刊名：GREEN ENERGY & ENVIRONMENT

收录：;EI(收录号：20242216182586);WOS:【SCI-EXPANDED(收录号:WOS:001471680900001)】；

基金：The authors gratefully acknowledge the research funding provided by the National Key R & D Program of China (Grant No. 2021YFB3801301) , National Natural Science Foundation of China (Grant Nos. 22075076, 22208097 and 22378119) , and Shanghai Pilot Program for Basic Research (22TQ1400100-4) .

语种：英文

外文关键词：Alkaline water electrolysis; Forward osmosis; Self-sustaining seawater splitting; Hydrogen evolution; Real seawater

摘要：Seawater electrolysis for hydrogen production faces inherent challenges, including side reactions, corrosion, and scaling, stemming from the intricate composition of seawater. In response, researchers have turned to continuous water splitting using forward osmosis (FO)-driven seawater desalination. However, the necessity of a neutral electrolyte hampers this strategy due to the limited current density and scarcity of precious metals. Herein, this study applies alkali-durable FO membranes to enable self-sustaining seawater splitting, which can selectively withdraw water molecules, from seawater, via concentration gradient. The membranes demonstrates outstanding perm-selectivity of water/ions (similar to 5830 mol mol(-1)) during month-long alkaline resistance tests, preventing electrolyte leaching (>97% OH- retention) while maintaining similar to 95% water balance (V-FO = V-electrolysis) via preserved concentration gradient for consistent forward-osmosis influx of water molecules. With the consistent electrolyte environment protected by the polyamide FO membranes, the NiFe-Ar-P catalyst exhibits promising performance: a sustain current density of 360 mA cm(-2) maintained at the cell voltage of 2.10 V and 2.15 V for 360 h in the offshore seawater, preventing Cl/Br corrosion (98% rejection) and Mg/Ca passivation (99.6% rejection). This research marks a significant advancement towards efficient and durable seawater-based hydrogen production.