频繁启停工况对5 kW碱性水电解槽耐久性影响研究

王森; 高慧峰; 高顶云

doi:10.19912/j.0254-0096.tynxb.2024-1678

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (1) : 42-47. DOI: 10.19912/j.0254-0096.tynxb.2024-1678

频繁启停工况对5 kW碱性水电解槽耐久性影响研究

王森^1,2, 高慧峰^1,2, 高顶云^1,2

作者信息 +

STUDY OF INFLUENCE OF FREQUENT START-STOP CYCLES ON DURABILITY OF 5 kW ALKALINE WATER ELECTROLYZER

Wang Sen^1,2, Gao Huifeng^1,2, Gao Dingyun^1,2

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文章历史 +

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/m²). 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.

导出引用

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 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1678

Wang Sen, Gao Huifeng, Gao Dingyun. STUDY OF INFLUENCE OF FREQUENT START-STOP CYCLES ON DURABILITY OF 5 kW ALKALINE WATER ELECTROLYZER[J]. Acta Energiae Solaris Sinica. 2026, 47(1): 42-47 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1678

中图分类号： TQ116.2+1

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