文献类型：期刊文献

英文题名：Optimization of High-Temperature Electrolysis System for Hydrogen Production Considering High-Temperature Degradation

作者：Yuan, Jiming[1];Li, Zeming[2];Yuan, Benfeng[2];Xiao, Guoping[2,3];Li, Tao[1];Wang, Jian-Qiang[2,3]

机构：[1]East China Univ Sci & Technol, Engn Res Ctr Large Scale Reactor Engn & Technol, State Key Lab Chem Engn, Minist Educ, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Shanghai Inst Appl Phys, Key Lab Interfacial Phys & Technol, Shanghai 201800, Peoples R China;[3]Univ Chinese Acad Sci, Beijing 100049, Peoples R China

年份：2023

卷号：16

期号：6

外文期刊名：ENERGIES

收录：;EI(收录号：20231513874749);WOS:【SCI-EXPANDED(收录号:WOS:000958375700001)】；

基金：This research was funded by the Transformational Technologies for Clean Energy and Demonstration Strategic Priority Research Program of the Chinese Academy of Sciences, XDA2100000, and the Young Potential Program of Shanghai Institute of Applied Physics, Chinese Academy of Sciences, E155041031.

语种：英文

外文关键词：high-temperature steam electrolysis; solid oxide electrolysis cell; high-temperature degradation; hydrogen production efficiency; optimization

摘要：Solid oxide electrolysis cells (SOECs) have great application prospects because of their excellent performance, but the long-term applications of the stacks are restricted by the structural degradation under the high-temperature conditions. Therefore, an SOEC degradation model is developed and embedded in a process model of the high-temperature steam electrolysis (HTSE) system to investigate the influence of the stack degradation at the system level. The sensitivity analysis and optimization were carried out to study the influence factors of the stack degradation and system hydrogen production efficiency and search for the optimal operating conditions to improve the hydrogen production efficiency and mitigate the stack degradation. The analysis results show that the high temperature and large current density can accelerate the stack degradation but improve the hydrogen production efficiency, while the high temperature gradually becomes unfavorable in the late stage. The low air-to-fuel feed ratio is beneficial to both the degradation rate and hydrogen production efficiency. The results show that the optimization method can improve the hydrogen production efficiency and inhibit the stack degradation effectively. Moreover, part of the hydrogen production efficiency has to be sacrificed in order to obtain a lower stack degradation rate.