硅酸盐学报

固体氧化物电解池燃料极表界面的传质/活化双改性策略

PDF下载

项永康 ¹ , 丁镇发 ¹ , 张肖鑫 ¹ , 张婉馨 ¹ , 孙毅飞 ¹^,²

硅酸盐学报 | 固体氧化物电池表界面专题—研究论文 2025,53(10): 2952-2962

收起

硅酸盐学报 |固体氧化物电池表界面专题—研究论文 2025 , 53 (10) : 2952 -2962

固体氧化物电解池燃料极表界面的传质/活化双改性策略

全屏

项永康¹, 丁镇发¹, 张肖鑫¹, 张婉馨¹, 孙毅飞¹^,²

作者信息

^1．厦门大学能源学院，福建厦门 363102

^2．福建省能源材料科学与技术创新实验室，福建厦门 361005

通讯作者:

孙毅飞（1987—），男，博士，副教授。

作者简介:

项永康（1999—），男，硕士研究生。

Mass Transfer and Activation Dual Modification Strategy for Fuel Electrode Interfaces in Solid Oxide Electrolysis Cells

Yongkang XIANG¹, Zhenfa DING¹, Xiaoxin ZHANG¹, Wanxin ZHANG¹, Yifei SUN¹^,²

Affiliations

^1.College of Energy Xiamen University, Xiamen 363102, Fujian, China

^2.Fujian Provincial Energy Materials Science and Technology Innovation Laboratory (IKKEM), Xiamen 361005, Fujian, China

Corresponding Author:

SUN Yifei (1987-), male, Ph.D, Associate Professor. E-mail: yfsun@xmu.edu.cn

XIANG Yongkang (1999-), male, Master candidate. E-mail: 18870019775@163.com

出版时间: 2025-10-20 doi: 10.14062/j.issn.0454-5648.20250217

文章导航

摘要

收起

固体氧化物电池因其高效能量转换及低污染排放的特点，成为能源领域的研究热点。然而燃料极支撑固体氧化物电解池（SOEC）在电解CO₂时面临传质极化大和电解性能有待提高等问题。本研究提出微观结构优化与材料双改性策略，显著提升了SOEC在CO₂电解模式下的性能，通过对电极支撑体共流延过程中对功能层引入4%淀粉作为造孔剂，有效降低了传质阻力，使电解电流密度在750 ℃、1.6 V条件下提升至0.64 A·cm^-2；同时采用溶胶-凝胶法合成Ce_0.8Gd_0.15Ni_0.05O₂并浸渍至燃料极，经还原处理后形成均匀分布的金属镍颗粒。电化学测试表明，改性电池在1.1 V和1.6 V下的电解电流密度分别进一步提高了58%和64%。X射线光电子能谱分析显示，第二活性相的修饰显著提高了电极材料氧空位浓度的增加，进一步促进了电解过程中氧离子传导。改性后电池在100 h长期测试中表现出良好的电压稳定性，为提升SOEC性能提供了有效的设计思路。

关键词

固体氧化物电解池 / 二氧化碳电解 / 微观结构优化 / 燃料极改性

Abstract

收起

Introduction

Solid oxide electrolysis cells (SOECs) are promising devices that use high-temperature electrolysis to convert H₂O and CO₂ into valuable fuels like H₂ and CO. Compared with conventional electrolysis, SOECs operate at elevated temperatures, which improves efficiency via utilizing industrial waste heat and renewable energy sources. However, CO₂ electrolysis faces challenges due to the chemical stability of CO₂, requiring a high energy input to break its bonds. NiO-YSZ based fuel electrode-supported SOECs are widely used due to their good electrochemical performance and mechanical strength at a high temperature. Nonetheless, some issues such as reduced electrode conductivity, chemical stability, and interface reaction activity during long-term operation hinder their performance and lifespan. It is thus important for the enhancement of gas transport and catalytic activity to optimize the microstructure and composition of the fuel electrode.

Methods

In this work, a dual modification strategy for microstructure optimization and impregnation modification was proposed to improve SOEC fuel electrode performance for CO₂ electrolysis. The electrode microstructure was optimized via introducing starch as a pore former during slurry preparation to adjust the porosity and improve gas diffusion. Half-cells consisting of NiO-YSZ support, NiO-YSZ functional layer, and YSZ electrolyte were fabricated by tape casting and sintered at 1350 ℃. In addition, Ce_0.8Gd_0.15Ni_0.05O₂ (CGN) was synthesized by a sol-gel method and impregnated into the porous fuel electrode. After impregnation, samples were reduced in hydrogen to produce Ni nanoparticles dispersed on the Ce-based matrix. The microstructure was characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD), while the oxygen vacancies and active sites were determined by X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR), and carbon dioxide temperature programmed desorption (CO₂-TPD). The electrochemical performance was evaluated by impedance spectroscopy and current-voltage measurements.

Results and Discussion

The introduction of starch effectively increases the electrode porosity, thus reducing mass transfer polarization resistance and enhancing gas transport. The results of electrochemical tests demonstrate that the optimized electrode has a current density of 0.64 A·cm^-2 at 750 ℃ and 1.6 V under CO₂ electrolysis atmosphere. The impregnation of CGN precursor leads to the uniform dispersion of Ni nanoparticles and increases oxygen vacancy concentration. These modifications significantly improves catalytic activity toward CO₂ reduction, and the electrolysis current density is increased by 58% and 64% at 1.1 V and 1.6 V, respectively. The impedance data indicate a marked decrease in polarization resistance. The long-term stability tests over 100 hours show a stable electrochemical performance, indicating that the combined structural and compositional modifications effectively enhance electrode durability and activity.

Conclusions

The dual modification approach integrating microstructural optimization and CGN impregnation significantly enhanced SOEC fuel electrode performance in CO₂ electrolysis. Increased porosity improved gas transport, while Ni catalyst modification boosted catalytic activity and oxygen ion transport. This strategy could provide a practical and cost-effective method to improve SOEC durability and efficiency without using expensive noble metals. The findings could offer a valuable guidance for the development of next-generation high-performance SOEC systems for carbon-neutral energy applications.

Key words

solid oxide electrolysis cell / carbon dioxide electrolysis / microstructure optimization / fuel electrode modification

引用本文

项永康, 丁镇发, 张肖鑫, 张婉馨, 孙毅飞. 固体氧化物电解池燃料极表界面的传质/活化双改性策略. 硅酸盐学报, 2025 , 53 (10) : 2952 -2962 . DOI: 10.14062/j.issn.0454-5648.20250217

Yongkang XIANG, Zhenfa DING, Xiaoxin ZHANG, Wanxin ZHANG, Yifei SUN. Mass Transfer and Activation Dual Modification Strategy for Fuel Electrode Interfaces in Solid Oxide Electrolysis Cells[J]. Journal of the Chinese Ceramic Society, 2025 , 53 (10) : 2952 -2962 . DOI: 10.14062/j.issn.0454-5648.20250217

基金

收起

国家自然科学基金(22472134; 22272136)

参考文献

收起

文献

收起

参考文献引证文献

排序方式：

2025年第53卷第10期

PDF下载

引用本文

BibTeX

文章信息

doi: 10.14062/j.issn.0454-5648.20250217

接收时间：2025-03-27
首发时间：2026-10-21
出版时间：2025-10-20

补充材料

相关文章

文章信息

作者

出版历史

收稿日期：2025-03-27
修回日期：2025-04-24

基金

国家自然科学基金(22472134; 22272136)

作者信息

^1．厦门大学能源学院，福建厦门 363102

^2．福建省能源材料科学与技术创新实验室，福建厦门 361005

通讯作者:

孙毅飞（1987—），男，博士，副教授。

参考文献

分享链接

https://castjournals.cast.org.cn/joweb/gsyxb/CN/10.14062/j.issn.0454-5648.20250217

分享至

全文二维码

扫描看全文

引用本文

BibTeX

本文的引用情况

2种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

关闭全屏

BibTeX
EndNote
RefWorks
TxT