一种新型太阳能热电化学耦合甲烷重整制氢脱碳与太阳能储能方法

作     者：郭轲 刘明恺 王彬 娄佳慧 郝勇 裴刚 金红光 Ke Guo;Mingkai Liu;Bin Wang;Jiahui Lou;Yong Hao;Gang Pei;Hongguang Jin

作者机构：Department of Thermal Science and Energy EngineeringUniversity of Science and Technology of ChinaHefei 230026China Institute of Engineering ThermophysicsChinese Academy of SciencesBeijing 100190China University of Chinese Academy of SciencesBeijing 100049China Wu Zhonghua CollegeNorth China Electric Power UniversityBeijing 102206China 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2024年第69卷第8期

页      面：1109-1121页

核心收录：

学科分类：081702[工学-化学工艺] 080703[工学-动力机械及工程] 08[工学] 0817[工学-化学工程与技术] 0807[工学-动力工程及工程热物理] 

基　　金：supported by the Basic Science Center Program for Ordered Energy Conversion of the National Natural Science Foundation of China(51888103) the Joint Research Center for Multi-energy Complementation and Conversion between the University of Science and Technology of China and the Institute of Engineering Thermophysics,Chinese Academy of Sciences。 

主　　题：Hydrogen Solar fuel Thermo-electrochemical conversion Decarbonization Solar energy storage 

摘      要：Hydrogen is widely regarded as a sustainable energy carrier with tremendous potential for low-carbon energy transition.Solar photovoltaic-driven water electrolysis(PV-E)is a clean and sustainable approach of hydrogen production,but with major barriers of high hydrogen production costs and limited capacity.Steam methane reforming(SMR),the state-of-the-art means of hydrogen production,has yet to overcome key obstacles of high reaction temperature and CO_(2)emission for sustainability.This work proposes a solar thermo-electrochemical SMR approach,in which solar-driven mid/low-temperature SMR is combined with electrochemical H_(2)separation and in-situ CO_(2)capture.The feasibility of this method is verified experimentally,achieving an average methane conversion of 96.8%at a dramatically reduced reforming temperature of 400-500℃.The underlying mechanisms of this method are revealed by an experimentally calibrated model,which is further employed to predict its performance for thermoelectrochemical hydrogen production.Simulation results show that a net solar-to-H_(2)efficiency of26.25%could be obtained at 500℃,which is over 11 percentage points higher than that of PV-E;the first-law thermodynamic efficiency reaches up to 63.27%correspondingly.The enhanced efficiency also leads to decreased fuel consumption and lower CO_(2)emission of the proposed solar-driven SMR system.Such complementary conversion of solar PV electricity,solar thermal energy,and low-carbon fuel provides a synergistic and efficient means of sustainable H_(2)production with potentially long-term solar energy storage on a vast scale.