The properties of the fuel electrode of solid oxide cells under simulated seawater electrolysis

被引：10
|
作者：
Luo, Xing [1 ,2 ]
Wu, Anqi [2 ]
Sang, Junkang [2 ]
Huang, Nan [2 ]
Han, Beibei [2 ]
Wang, Chengtian [2 ]
Gao, Yunfang [1 ]
Guan, Wanbing [2 ]
Singhal, Subhash C. [2 ]
机构：
[1] Zhejiang Univ Technol, Coll Chem Engn, 18 Chaowang Rd, Hangzhou 310014, Zhejiang, Peoples R China
[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Adv Fuel Cells & Electrolyzers Technol Zhe, Ningbo 315201, Zhejiang, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2023年 / 48卷 / 28期
基金：
中国国家自然科学基金;
关键词：
Nickel-yttria-stabilized zirconia; support; Seawater; Area specific resistance; Solid oxide electrolysis cell; NI-YSZ ANODES; HYDROGEN-PRODUCTION; NI/YSZ ELECTRODES; AIR ELECTRODE; CERMET ANODES; DEGRADATION; PERFORMANCE; STABILITY; MICROSTRUCTURE; EFFICIENCY;
D O I：
10.1016/j.ijhydene.2022.11.350
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this study, electrolysis of seawater in flat-tube nickel-yttria-stabilized zirconia (Ni-YSZ) electrode-supported solid oxide electrolysis cells (SOECs) were modeled and the effects of variations in electrical conductivity and microstructure of Ni-YSZ electrode support were investigated. When the current density was greater than 700 mA & BULL;cm-2, the conductivity of the electrode support decreased slightly with an increase in current density at 800 & DEG;C in hydrogen reduction environment; the conductivity of the electrode support decreased with an increase in the current density when the current density was greater than 400 mA & BULL;cm-2 at 800 & DEG;C in the seawater electrolysis environment. During long-term durability experiment of seawater electrolysis, the degradation rates in area specific resistance (ASR) were 0.096 mU & BULL;cm2/100 h and 0.207 mU & BULL;cm2/100 h with a current density of 300 mA & BULL;cm-2 (i.e., & LE;400 mA & BULL;cm-2) and 1000 mA & BULL;cm-2 (i.e., & GE;400 mA & BULL;cm-2), respectively. Besides, the various ions commonly present in seawater did not contaminate the Ni-YSZ support during the long-term durability test. The degradation mechanism of seawater electrolysis in flat-tube SOECs is discussed and clarified.& COPY; 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：10359 / 10367
页数：9
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