TY - JOUR
T1 - Feasibility of high efficient solar hydrogen generation system integrating photovoltaic cell/photon-enhanced thermionic emission and high-temperature electrolysis cell
AU - Wang, Hongsheng
AU - Kong, Hui
AU - Pu, Zhigang
AU - Li, Yao
AU - Hu, Xuejiao
N1 - Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/4/15
Y1 - 2020/4/15
N2 - The integration of solar photovoltaic (PV) cell and high-temperature electrolysis cell to produce hydrogen is a promising means of solar energy storage and hydrogen harvesting. In this paper, a novel hydrogen production system is proposed by combining PV cell and photon-enhanced thermionic emission cell (PETE) with the solid oxide electrolysis cell (SOEC). The inlet steam of SOEC could be heated to a high temperature ranging from 800 °C to 1000 °C by the waste heat recovery of the PV cell and PETE module. The high-temperature steam and the electricity produced by PV cell and PETE module are fed into the SOEC together for H2 generation. High temperature electrolysis could decrease the Gibbs free energy required in water splitting, leading to less electricity cost at the expense of consuming more heat. PV cells can also be more efficient in a relatively low operation temperature by the waste heat recovery, and more electricity would be generated for hydrogen production. The first-law thermodynamic efficiency, solar exergy efficiency and solar-to-hydrogen efficiency (STH efficiency) of this proposed system could reach 77.05%, 55.99%, and 29.61%, respectively, which are expected to provide a theoretic basis for the research and application of convenient and efficient solar hydrogen generation.
AB - The integration of solar photovoltaic (PV) cell and high-temperature electrolysis cell to produce hydrogen is a promising means of solar energy storage and hydrogen harvesting. In this paper, a novel hydrogen production system is proposed by combining PV cell and photon-enhanced thermionic emission cell (PETE) with the solid oxide electrolysis cell (SOEC). The inlet steam of SOEC could be heated to a high temperature ranging from 800 °C to 1000 °C by the waste heat recovery of the PV cell and PETE module. The high-temperature steam and the electricity produced by PV cell and PETE module are fed into the SOEC together for H2 generation. High temperature electrolysis could decrease the Gibbs free energy required in water splitting, leading to less electricity cost at the expense of consuming more heat. PV cells can also be more efficient in a relatively low operation temperature by the waste heat recovery, and more electricity would be generated for hydrogen production. The first-law thermodynamic efficiency, solar exergy efficiency and solar-to-hydrogen efficiency (STH efficiency) of this proposed system could reach 77.05%, 55.99%, and 29.61%, respectively, which are expected to provide a theoretic basis for the research and application of convenient and efficient solar hydrogen generation.
KW - High temperature electrolysis
KW - Hydrogen production
KW - Photon-enhanced thermionic emission cell (PETE)
KW - Photovoltaic and thermal hybrid utilization
KW - Solar water splitting
KW - Solid oxide electrolysis cell (SOEC)
UR - http://www.scopus.com/inward/record.url?scp=85082116713&partnerID=8YFLogxK
U2 - 10.1016/j.enconman.2020.112699
DO - 10.1016/j.enconman.2020.112699
M3 - Article
AN - SCOPUS:85082116713
SN - 0196-8904
VL - 210
JO - Energy Conversion and Management
JF - Energy Conversion and Management
M1 - 112699
ER -
