文献类型：期刊文献

英文题名：Expanded Negative Electrostatic Network-Assisted Seawater Oxidation and High-Salinity Seawater Reutilization

作者：Liang, Jie[1,2];Cai, Zhengwei[1];Li, Zixiao[2];Geng, Meiqi[1];Wang, Hefeng[1];Wang, Zhiqiang[3,4,5];Li, Tingshuai[2];Wu, Tongwei[2];Luo, Fengming[6,7];Sun, Xuping[1,6];Tang, Bo[1,8]

机构：[1]Shandong Normal Univ, Coll Chem Chem Engn & Mat Sci, Jinan 250014, Shandong, Peoples R China;[2]Univ Elect Sci & Technol China, Inst Fundamental & Frontier Sci, Chengdu 610054, Sichuan, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat & Joint Int Res Lab Precis Chem, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Mol Engn Ctr Computat Chem, Shanghai 200237, Peoples R China;[5]East China Univ Sci & Technol, Res Inst Ind Catalysis, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[6]Sichuan Univ, West China Hosp, Ctr High Altitude Med, Chengdu 610041, Sichuan, Peoples R China;[7]Sichuan Univ, West China Hosp, Dept Pulm & Crit Care Med, Chengdu 610041, Sichuan, Peoples R China;[8]Laoshan Lab, Qingdao 266237, Shandong, Peoples R China

年份：2025

卷号：19

期号：1

起止页码：1530

外文期刊名：ACS NANO

收录：;EI(收录号：20250417739837);WOS:【SCI-EXPANDED(收录号:WOS:001390459200001)】；

基金：X.S. acknowledges the funding support from the Free Exploration Project of Frontier Technology for Laoshan Laboratory (No. 16-02). B.T. acknowledges the funding support from the Natural Science Foundation of China (No. 21927811). F.L. thanks the funding support from the Science and Technology Program of Tibet (No. XZ202201ZY0002G). T.W. acknowledges the funding support from the Natural Science Foundation of China (No. 52202214) and the Natural Science Foundation of Sichuan Province (No. 2023NSFSC0954). The numerical calculations in this paper have been done on Computing Center in Xi'an.

语种：英文

外文关键词：hydrogen; seawater; phytates; electrostatic; high-salinity

摘要：Coastal/offshore renewable energy sources combined with seawater splitting offer an attractive means for large-scale H-2 electrosynthesis in the future. However, designing anodes proves rather challenging, as surface chlorine chemistry must be blocked, particularly at high current densities (J). Additionally, waste seawater with increased salinity produced after long-term electrolysis would impair the whole process sustainability. Here, we convert seawater to O-2 selectively, on hydroxides, by building phytate-based expanded negative electrostatic networks (ENENs) with electrostatically repulsive capacities and higher negative charge coverage ranges than those of common inorganic polyatomic anions. With surface ENENs, even typically unstable CoFe hydroxides perform nicely toward alkaline seawater oxidation at activities of >1 A cm(-2). CoFe hydroxides with phytate-based ENENs exhibit prolonged lifespans of 1000 h at J of 1 A cm(-2) and 900 h at J of 2 A cm(-2) and thus rival the best seawater oxidation anodes. Direct introduction of trace phytates to seawater weakens corrosion tendency on conventional CoFe hydroxides as well, extending the life of hydroxides by similar to 28 times at J of 2 A cm(-2). A wide range of materials all obtain prolonged lifetimes in the presence of ENENs, validating universal applicability. Mechanisms are studied using theoretical computations under working conditions and ex situ/in situ characterizations. We demonstrate a potentially viable way to sustainably reutilize high-salinity wastewater, which is a long-standing but neglected issue. Series-connected devices exhibit good resistance to low temperature operation and are more eco-friendly than current organic electrolyte-based energy storage devices.