Advances, opportunities, and challenges of hydrogen and oxygen production from seawater electrolysis: An electrocatalysis perspective

Asghari, Elnaz; Abdullah, Muhammad; Foroughi, Faranak; Lamb, Jacob Joseph; Pollet, Bruno G.

doi:10.1016/j.coelec.2021.100879

Cited by 29 publications

(25 citation statements)

References 46 publications

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“…However, the seawater consists of various salts such as Na + , K + , Mg 2+ , Ca 2+ , Cl − , and SO4 2− and bacteria and microorganisms, which hindered the HER and OER processes. [ 189 ] Insoluble precipitates generated during seawater electrolysis such as Ca(OH) 2 and Mg(OH) 2 may adhere to the electrode surface, thus blocking the active sites and deteriorating the catalytic activity.…”

Section: Solar‐driven Seawater Splittingmentioning

confidence: 99%

Progress and Perspectives for Solar‐Driven Water Electrolysis to Produce Green Hydrogen

Zhao

Yuan

2023

Advanced Energy Materials

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energy system is among the most promising solutions to solve the above issues. Substituting the current energy carrier with a sustainable fuel is one of the crucial points in the system. Hydrogen as a green and high energy density carrier, primarily derived from water, can satisfy the requirement of sustainable development and facilitate environmental protection and energy conservation. Nowadays, hydrogen is mainly produced from numerous nonrenewable energy such as fossil fuels and biomass for practical applications. [1][2][3] Water electrolysis is a hopeful strategy for efficient and sustainable hydrogen production, but not cost-effective due to the need for large electricity consumption. [4,5] It remains challenging to achieve highly effective hydrogen production with lowcost and renewable energy.Sunlight is an endlessly renewable energy source, which can substitute fossil fuels. In this regard, coupling of sunlight and water electrolysis is desperately needed. The photovoltaic module coupled with water electrolyzers (PV-EC) to achieve the direct conversion of solar energy into hydrogen fuel is a good choice for sustainable energy system. The solar-driven water electrolysis can be achieved through the electrical power generated by a photovoltaic system for driving an external water electrolyzer. [6][7][8] The solar cells do not need to immerse into the electrolyte and not be vulnerable to corrosion in this configuration. However, the high cost of solar photovoltaic devices limits its practical applications. Integrated photoelectrochemical (PEC) devices comprising a photovoltaic device and a water electrolyzer in a single device have aroused much attention. [9][10][11] It allows the direct coupling of light absorbers and catalysts, which could reduce the cost and mechanical limitations. One of the most prominent works is the "artificial leaf", which comprises a triple junction and amorphous silicon photovoltaic interfaced to hydrogen-and oxygen-evolving catalyst for achieving an efficiency of 4.7%. [12] Considering the fluctuating output power and intrinsically intermittent nature of solar energy, a rechargeable energy storage device could be introduced to serve as a reservoir to offer a stable electrical output and accommodate solar energy. The PV-ES-EC system can thus be achieved through the fabrication of an efficient energy storage device to couple the photovoltaic device and water electrolyzer.Notably, the above solar-driven water electrolysis systems require highly conductive and stable separators, highly Solar-driven water electrolysis has been considered to be a promising route to produce green hydrogen, because the conventional water electrolysis system is not completely renewable as it requires power from nonrenewable fossil fuel sources. This review emphasizes the strategies for solar-driven water electrolysis, including the construction of photovoltaic (PV)-water electrolyzer systems, PV-rechargeable energy storage devicewater electrolyzer systems with solar energy as the sole input energy, and photo...

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Section: Solar‐driven Seawater Splittingmentioning

confidence: 99%

Progress and Perspectives for Solar‐Driven Water Electrolysis to Produce Green Hydrogen

Zhao

Yuan

2023

Advanced Energy Materials

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“…However, for numerous small-scale coastal photovoltaic/ wind energy storage devices, direct seawater splitting offers a more economically competitive option. 11,14,18 By optimizing the electrolytic cell, electrocatalyst and ion exchange membrane to remedy disadvantages in corrosion and stability, extracting hydrogen directly from seawater avoids the disadvantages of the high upfront construction investment and post-operation costs of seawater desalination plants. [19][20][21][22][23] Besides, the application of seawater also provides salutary attempts to broaden the use of saline surface water/recycled water, with significant economic and environmental benefits.…”

Section: Introductionmentioning

confidence: 99%

Designing electrocatalysts for seawater splitting: surface/interface engineering toward enhanced electrocatalytic performance

Liu

Sun

et al. 2023

Green Chem.

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“…hypochlorite and hypochlorous acid), which can damage electrolyzer components [6]. While there has been extensive research into developing novel catalysts that preferentially evolve oxygen over chlorine, an alternative approach is using thin-film composite reverse osmosis (RO) membranes with a contained anolyte and a seawater catholyte [7][8][9][10][11][12]. An anolyte that contains fully oxidized salt species such as perchlorate (NaClO 4 ) can be used as an inert electrolyte, while the membrane prevents chloride ion transfer to the anode and thus its oxidation to chlorine gas and other species.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical and hydraulic analysis of thin-film composite and cellulose triacetate membranes for seawater electrolysis applications

Taylor

Shi

Zhou

et al. 2023

Journal of Membrane Science

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Advances, opportunities, and challenges of hydrogen and oxygen production from seawater electrolysis: An electrocatalysis perspective

Cited by 29 publications

References 46 publications

Progress and Perspectives for Solar‐Driven Water Electrolysis to Produce Green Hydrogen

Progress and Perspectives for Solar‐Driven Water Electrolysis to Produce Green Hydrogen

Designing electrocatalysts for seawater splitting: surface/interface engineering toward enhanced electrocatalytic performance

Electrochemical and hydraulic analysis of thin-film composite and cellulose triacetate membranes for seawater electrolysis applications

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