Response behaviour of proton exchange membrane water electrolysis to hydrogen production under dynamic conditions |
| |
| Affiliation: | 1. International Joint Laboratory of Green & Low Carbon Development, Jiangsu Province, China;2. Department of Environment Engineering, Nanjing Institute of Technology, Nanjing 211167, Jiangsu, China;1. Univ. Grenoble Alpes, LEPMI, F-38000 Grenoble, France;2. CNRS, LEPMI, F-38000 Grenoble, France;3. Instituto de Química de São Carlos, U. de São Paulo, Avenida Trabalhador Sãocarlense, 400 Parque Arnold Schmidt, CP 780, 13560-970 São Carlos, SP, Brazil;1. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing, 100081, China;2. School of Petrochemical Engineering & Environment, Zhejiang Ocean University, Zhoushan 316022, China;1. Hebei Key Laboratory of Low Carbon and High Efficiency Power Generation Technology, North China Electric Power University, Baoding 071003, Hebei, China;2. Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education, North China Electric Power University, Baoding 071003, Hebei, China;1. Institute for Sustainable Energy Technology and Mobility, Esslingen University of Applied Sciences, Kanalstraße 33, Baden Württemberg, Esslingen am Neckar, 73728, Germany;2. Institute for Energy Conversion and Storage, Ulm University, Albert-Einstein-Allee 47, Baden Württemberg, Ulm, 89081, Germany |
| |
| Abstract: | Hydrogen production via proton exchange membrane water electrolysis (PEMWE) coupled with renewable energy sources is gaining considerable attention due to its high current densities and flexible responses. This study investigated the voltage responses of PEMWE under dynamic conditions. Three comprehensive performance parameters were adopted to determine the response behaviours of PEMWE devices, including the total response time (TRT), the voltage stability (Vmax - Vmin), and the difference between the voltages seen for dynamic and static conditions (ΔV = Vdynamic - Vstatic). The obtained results showed that with small step currents (ΔI = 1 A) and low currents (I < 9 A), PEMWE presented better responses. The TRT was less than 30 s, (Vmax - Vmin) was less than 10 mV, and ΔV was less than 20 mV. Increasing the amplitude of the step current increased the response time and reduced the voltage stability during electrolysis. The Joule heat produced by the inner resistance have been responsible for the different response behaviours of the PEMWE devices. A durability test showed that after a square wave operated for 300 h, significant degradation of the PEMWE response was observed by comparing the voltage response parameters. Electrochemical characterization studies indicated increases in the static voltage, resistance, and Tafel slope, which were consistent with the degradation of the PEMWE response. |
| |
| Keywords: | Hydrogen production PEM water Electrolysis Response behaviours Dynamic condition |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
