EN频繁启停工况对5 kW碱性水电解槽耐久性影响研究
频繁启停工况对5 kW碱性水电解槽耐久性影响研究
- 太阳能学报 2026年47卷第1期 页码：42-47
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DOI：doi:10.19912/j.0254-0096.tynxb.2024-1678
中图分类号： TQ116-
网络首发：2026-02-05，
纸质出版：2026-02-05
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王森, 高慧峰, 高顶云. 频繁启停工况对5 kW碱性水电解槽耐久性影响研究[J]. 太阳能学报, 2026,47(1):42-47.
王森, 高慧峰, 高顶云. 频繁启停工况对5 kW碱性水电解槽耐久性影响研究[J]. 2026, 47(1): 42-47.
王森, 高慧峰, 高顶云. 频繁启停工况对5 kW碱性水电解槽耐久性影响研究[J]. 太阳能学报, 2026,47(1):42-47. DOI： doi:10.19912/j.0254-0096.tynxb.2024-1678.
王森, 高慧峰, 高顶云. 频繁启停工况对5 kW碱性水电解槽耐久性影响研究[J]. 2026, 47(1): 42-47. DOI： doi:10.19912/j.0254-0096.tynxb.2024-1678.
摘要
采用快速频繁启停（运行10 min
关闭10 min）循环工况
探究频繁启停工况对5 kW碱性水电解槽（AWE）耐久性影响。在100 h的连续测试期间
频繁启停工况对应电解槽平均小室电压增加0.32 V
平均衰退率3.2 mV/h
是恒电流密度（2500 A/m2）工况运行结果的4倍。利用线性扫描伏安曲线、电化学阻抗、X射线光电子能谱等表征手段进行分析
测试结果表明频发启停工况对阳极电极的性能变化影响不明显
而阴极电极催化剂发生氧化
反应动力学减弱
电荷转移阻抗增大
进而导致AWE电解效率和稳定性衰减。
Abstract
A rapid frequent start-stop cycling condition (10 min operation followed by 10 min shutdown) was applied to investigate the impact of frequent start-stop operation on the durability of a 5 kW alkaline water electrolyzer (AWE). During a 100 h continuous test
the frequent start-stop condition increased the average cell voltage by 0.32 V with an average degradation rate of 3.2 mV/h
which is four times that under constant current density operation (2500 A/m). The performance degradation of both cathode and anode electrodes was monitored using linear sweep voltammetry and electrochemical impedance spectroscopy and X-ray photoelectron spectroscopy (XPS). The results show that the degradation in AWE performance under frequent start-stop conditions is primarily attributed to the deterioration of the cathode electrode. This degradation is likely associated with the generation of reverse currents during the start-stop cycles. Therefore
this study highlights the challenges posed by frequent start-stop operations under fluctuating renewable energy conditions and underscores the need for the development of cathode electrodes capable of withstanding such conditions.
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references
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