Transient Characteristics and Current Overshoot Mechanism of Reversible Solid Oxide Cells During Bidirectional Mode Switching Between Power Generation and Hydrogen Production

JI Chengze; ZONG Zheng; 2; GE Yangyang; ZHANG Xiaotong; 3; WU Kai; ZHOU Jun; 1

doi:10.13336/j.1003-6520.hve.20240432

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Transient Characteristics and Current Overshoot Mechanism of Reversible Solid Oxide Cells During Bidirectional Mode Switching Between Power Generation and Hydrogen Production

更新时间：2026-09-17

- Transient Characteristics and Current Overshoot Mechanism of Reversible Solid Oxide Cells During Bidirectional Mode Switching Between Power Generation and Hydrogen Production
- Vol. 51, Issue 5, Pages: 2200-2209(2025)
- 作者机构：
  
  西安交通大学电工材料电气绝缘全国重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.13336/j.1003-6520.hve.20240432
  CLC：
- Published：2025
- 稿件说明：
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JI Chengze, ZONG Zheng, 2, et al. Transient Characteristics and Current Overshoot Mechanism of Reversible Solid Oxide Cells During Bidirectional Mode Switching Between Power Generation and Hydrogen Production[J]. 2025, 51(5): 2200-2209.
DOI：

JI Chengze, ZONG Zheng, 2, et al. Transient Characteristics and Current Overshoot Mechanism of Reversible Solid Oxide Cells During Bidirectional Mode Switching Between Power Generation and Hydrogen Production[J]. 2025, 51(5): 2200-2209. DOI： 10.13336/j.1003-6520.hve.20240432.

摘要

可逆固体氧化物电池(reversible solid oxide cell，RSOC)兼具发电与电解产氢能力，发电-电解模式切换过程中出现的电流密度超调对RSOC的寿命与能源转换效率有不利影响，然而针对RSOC模式切换瞬态特性及电流超调相关的研究较少。因此在建立RSOC多物理场耦合模型的基础上深入分析了RSOC模式切换过程中的超调现象，研究发现提升燃料通道入口H2O的摩尔分数会降低燃料电池(fuel cell，FC)模式切换到电解池(electrolysis cell，EC)模式的电流密度超调量，而增加EC到FC过程的超调量；此外，研究发现改变不同模式切换方式，引起的电流超调量与电压变化量并不完全呈正相关。为未来RSOC设备在电氢耦合能源系统中的可靠运行提供了理论基础。

Abstract

Reversible solid oxide cell (RSOC) is a device with both power generation and hydrogen production capacities. The current density overshoot in the transient of power generation - hydrogen production mode switching process has adverse effects on RSOC life and energy conversion efficiency. However

there are few researches on RSOC mode switcing transient characteristics and current overshoot. Thus

we study and deeply analyze the overshoot phenomena during the mode switching period based on the multi-physics coupling RSOC model. We find that increasing the mole fraction of H2O at the inlet of fuel channel can decrease the overshoot from fuel cell (FC) mode to electrolysis cell (EC) mode and increase the overshoot in the opposite switching direction. In addition

under the research of different mode switching ways

the relationship between the current density overshoot and voltage variation is not completely positive. The research will provide a theoretical basis for the reliable operation of RSOC equipment in the electro-hydrogen coupling energy system in the future.

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