TY - JOUR
T1 - Materials Design and System Innovation for Direct and Indirect Seawater Electrolysis
AU - He, Wenjun
AU - Li, Xinxin
AU - Tang, Cheng
AU - Zhou, Shujie
AU - Lu, Xunyu
AU - Li, Weihong
AU - Li, Xue
AU - Zeng, Xiaoyuan
AU - Dong, Peng
AU - Zhang, Yingjie
AU - Zhang, Qiang
PY - 2023/11/28
Y1 - 2023/11/28
N2 - Green hydrogen production from renewably powered water electrolysis is considered as an ideal approach to decarbonizing the energy and industry sectors. Given the high-cost supply of ultra-high-purity water, as well as the mismatched distribution of water sources and renewable energies, combining seawater electrolysis with coastal solar/offshore wind power is attracting increasing interest for large-scale green hydrogen production. However, various impurities in seawater lead to corrosive and toxic halides, hydroxide precipitation, and physical blocking, which will significantly degrade catalysts, electrodes, and membranes, thus shortening the stable service life of electrolyzers. To accelerate the development of seawater electrolysis, it is crucial to widen the working potential gap between oxygen evolution and chlorine evolution reactions and develop flexible and highly efficient seawater purification technologies. In this review, we comprehensively discuss present challenges, research efforts, and design principles for direct/indirect seawater electrolysis from the aspects of materials engineering and system innovation. Further opportunities in developing efficient and stable catalysts, advanced membranes, and integrated electrolyzers are highlighted for green hydrogen production from both seawater and low-grade water sources. © 2023 American Chemical Society.
AB - Green hydrogen production from renewably powered water electrolysis is considered as an ideal approach to decarbonizing the energy and industry sectors. Given the high-cost supply of ultra-high-purity water, as well as the mismatched distribution of water sources and renewable energies, combining seawater electrolysis with coastal solar/offshore wind power is attracting increasing interest for large-scale green hydrogen production. However, various impurities in seawater lead to corrosive and toxic halides, hydroxide precipitation, and physical blocking, which will significantly degrade catalysts, electrodes, and membranes, thus shortening the stable service life of electrolyzers. To accelerate the development of seawater electrolysis, it is crucial to widen the working potential gap between oxygen evolution and chlorine evolution reactions and develop flexible and highly efficient seawater purification technologies. In this review, we comprehensively discuss present challenges, research efforts, and design principles for direct/indirect seawater electrolysis from the aspects of materials engineering and system innovation. Further opportunities in developing efficient and stable catalysts, advanced membranes, and integrated electrolyzers are highlighted for green hydrogen production from both seawater and low-grade water sources. © 2023 American Chemical Society.
KW - chlorine evolution reaction
KW - corrosive effect
KW - green hydrogen
KW - long-term stability
KW - materials engineering
KW - membrane-based reactor
KW - oxygen evolution reaction
KW - seawater electrolysis
KW - seawater purification
KW - selectivity
UR - http://www.scopus.com/inward/record.url?scp=85178523100&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85178523100&origin=recordpage
U2 - 10.1021/acsnano.3c08450
DO - 10.1021/acsnano.3c08450
M3 - RGC 21 - Publication in refereed journal
C2 - 37965727
SN - 1936-0851
VL - 17
SP - 22227
EP - 22239
JO - ACS Nano
JF - ACS Nano
IS - 22
ER -
