Seawater electrolysis technologies for green hydrogen production: challenges and opportunities

Gao, Fei‐Yue; Yu, Peng; Gao, Min‐Rui

doi:10.1016/j.coche.2022.100827

Cited by 66 publications

(48 citation statements)

References 34 publications

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“…22 Further, recent work has reported capital costs for DSE ( i.e. , over 6000 $ kW −1 , 21 ), which are more than double the capital costs for conventional electrolyzers ( i.e. , 920–1725 USD kW −1 for alkaline water electrolysis, AWE, and 1610–2668 USD kW −1 for PEM WE).…”

Section: Direct Seawater Electrolysis For the Hydrogen Energy Economymentioning

confidence: 99%

“…17 The membrane itself is susceptible to degradation from the corrosive nature of seawater, as well, and may further suffer from suspended particles and sparingly soluble salt ions in seawater precipitating or adhering to it. 21 In addition, both Cl 2 and O 2 may cross the membrane to the cathode, where they can compete with the hydrogen evolution reaction, or even react with evolved hydrogen. The net impact of the reactions discussed above is a relatively short lifespan of DSE as well as low performance and production rates.…”

Section: Direct Seawater Electrolysis For the Hydrogen Energy Economymentioning

confidence: 99%

“…A similar result can be expected for the relative contribution to the operating costs and the levelized cost of H 2 (LCOH), since electricity is the primary contributor to the economic and environmental load of H 2 production. 22 Further, recent work has reported capital costs for DSE (i.e., over 6000 $ kW À1 , 21 ), which are more than double the capital costs for conventional electrolyzers (i.e., 920-1725 USD kW À1 for alkaline water electrolysis, AWE, and 1610-2668 USD kW À1 for PEM WE). 23 As a result of the composition of seawater, DSE is also capital intensive due to chlorine crossover and corrosion, 24 leading to frequent replacements of membranes, catalysts, and system components.…”

Section: Direct Seawater Electrolysis For the Hydrogen Energy Economymentioning

confidence: 99%

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Directing the research agenda on water and energy technologies with process and economic analysis

Lee

Wang

et al. 2023

Energy Environ. Sci.

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Section: Direct Seawater Electrolysis For the Hydrogen Energy Economymentioning

confidence: 99%

Section: Direct Seawater Electrolysis For the Hydrogen Energy Economymentioning

confidence: 99%

Section: Direct Seawater Electrolysis For the Hydrogen Energy Economymentioning

confidence: 99%

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Directing the research agenda on water and energy technologies with process and economic analysis

Lee

Wang

et al. 2023

Energy Environ. Sci.

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“…Water is decomposed into hydrogen and oxygen by delivering a current through it in the presence of electrolytes [7]. Electric current produce positively charged ions of hydrogen to move out to the cathode of a negative charge, where a reduction occurs to create hydrogen atoms.…”

Section: Electrolysismentioning

confidence: 99%

Economical study for hydrogen production from seawater using renewable energy in Egypt

Sheta

Abdeltawab

Shash

2023

Materialwissenschaft Werkst

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This study looks into the possibilities of hydrogen production in the north coast and red-sea Zone, Egypt, to conver renewable energy to hydrogen (power to gas). The main purpose is to estimate the power needed for each kg of hydrogen production from seawater using renewable energy and then the quantity of desalinated seawater needed to cover this cost. We will discuss different scenarios; the main two scenarios are photovoltaic (PV) solar with reverse osmosis (RO) desalination and concentrating solar power (CSP) with multi-effect desalination (MED).

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“…It is noteworthy that renewable electricity typically comes from wind energy, tide energy, and solar energy. Renewable electricity can be utilized to generate Hydrogen [51] waste heat is low than 100 °C. Thus, part of waste heat can be utilized by absorption chiller, adsorption chiller, or desiccant dehumidifier.…”

Section: System Applications On Waste Heat Recoverymentioning

confidence: 99%

Sustainable energy recovery from thermal processes: a review

2022

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Background With the increasing concerns on the energy shortage and carbon emission issues worldwide, sustainable energy recovery from thermal processes is consistently attracting extensive attention. Nowadays, a significant amount of usable thermal energy is wasted and not recovered worldwide every year. Meanwhile, discharging the wasted thermal energy often causes environmental hazards. Significant social and ecological impacts will be achieved if waste thermal energy can be effectively harnessed and reused. Hence, this study aims to provide a comprehensive review on the sustainable energy recovery from thermal processes, contributing to achieving energy security, environmental sustainability, and a low-carbon future. Main text To better understand the development of waste thermal energy utilization, this paper reviews the sustainable thermal energy sources and current waste energy recovery technologies, considering both waste heat and cold energy. The main waste heat sources are prime movers, renewable heat energy, and various industrial activities. Different waste heat recovery technologies to produce electricity, heating, and cooling are analyzed based on the types and temperatures of the waste heat sources. The typical purposes for waste heat energy utilization are power generation, spacing cooling, domestic heating, dehumidification, and heat storage. In addition, the performance of different waste heat recovery systems in multigeneration systems is introduced. The cold energy from the liquified natural gas (LNG) regasification process is one of the main waste cold sources. The popular LNG cold energy recovery strategies are power generation, combined cooling and power, air separation, cryogenic CO2 capture, and cold warehouse. Furthermore, the existing challenges on the waste thermal energy utilization technologies are analyzed. Finally, potential prospects are discussed to provide greater insights for future works on waste thermal energy utilization. Conclusions Novel heat utilization materials and advanced heat recovery cycles are the key factors for the development of waste high-temperature energy utilization. Integrated systems with multiply products show significant application potential in waste thermal energy recovery. In addition, thermal energy storage and transportation are essential for the utilization of harnessed waste heat energy. In contrast, the low recovery rate, low utilization efficiency, and inadequate assessment are the main obstacles for the waste cold energy recovery systems.

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Seawater electrolysis technologies for green hydrogen production: challenges and opportunities

Cited by 66 publications

References 34 publications

Directing the research agenda on water and energy technologies with process and economic analysis

Directing the research agenda on water and energy technologies with process and economic analysis

Economical study for hydrogen production from seawater using renewable energy in Egypt

Sustainable energy recovery from thermal processes: a review

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