A sodium-ion-conducted asymmetric electrolyzer to lower the operation voltage for direct seawater electrolysis
Huazhong University of Science and Technology · Chinese Academy of Sciences · +4 more institutions
Abstract
Abstract Hydrogen produced from neutral seawater electrolysis faces many challenges including high energy consumption, the corrosion/side reactions caused by Cl - , and the blockage of active sites by Ca 2+ /Mg 2+ precipitates. Herein, we design a pH-asymmetric electrolyzer with a Na + exchange membrane for direct seawater electrolysis, which can simultaneously prevent Cl - corrosion and Ca 2+ /Mg 2+ precipitation and harvest the chemical potentials between the different electrolytes to reduce the required voltage. In-situ Raman spectroscopy and density functional theory calculations reveal that water dissociation can be promoted with a catalyst based on atomically dispersed Pt anchored to Ni-Fe-P nanowires…
Citation impact
- FWCI
- 10.99
- Percentile
- 100%
- References
- 58
Authors
14- HSHao ShiCorresponding
Huazhong University of Science and Technology
- TWTanyuan Wang
Huazhong University of Science and Technology
- JLJianyun Liu
Huazhong University of Science and Technology
- WCWeiwei Chen
Chinese Academy of Sciences, Institute of Physics
- SLShenzhou Li
Huazhong University of Science and Technology
Topics & keywords
- Electrolysis
- Seawater
- Electrolyte
- High-pressure electrolysis
- Materials science
- Polymer electrolyte membrane electrolysis
- Electrolysis of water
- Chemical engineering