Performance enhancement of PEM electrolyzers through iridium-coated titanium porous transport layers

Liu, Chang; Carmo, Marcelo; Bender, Guido; Everwand, Andreas; Lickert, Thomas; Young, James L.; Smolinka, Tom; Stolten, Detlef; Lehnert, Werner

doi:10.1016/j.elecom.2018.10.021

Cited by 144 publications

(116 citation statements)

References 21 publications

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“…Grubb idealized the above concept by using solid sulfonated polystyrene membranes as the electrolytes, also known as PEM water electrolysis, rarely called SPE water electrolysis [84,85]. The polymer electrolyte membrane could provide higher proton conductivity, lower gas exchange, the compact design of system and operate under high pressure [86][87][88][89][90]. The advantages of solid polymer electrolyte were lower membrane thickness (~ 20-300 μm thick).…”

Section: Pem Water Electrolysismentioning

confidence: 99%

Water Splitting: From Electrode to Green Energy System

et al. 2020

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HIGHLIGHTS • Bifunctional electrode and electrolytic cell configuration for electrochemical water splitting are reviewed. • The different green energy systems powered water splitting are summarized and discussed. • An outlook of future research prospects for the development of green energy system powered water splitting in practical application process is proposed. ABSTRACT Hydrogen (H 2) production is a latent feasibility of renewable clean energy. The industrial H 2 production is obtained from reforming of natural gas, which consumes a large amount of nonrenewable energy and simultaneously produces greenhouse gas carbon dioxide. Electrochemical water splitting is a promising approach for the H 2 production, which is sustainable and pollution-free. Therefore, developing efficient and economic technologies for electrochemical water splitting has been an important goal for researchers around the world. The utilization of green energy systems to reduce overall energy consumption is more important for H 2 production. Harvesting and converting energy from the environment by different green energy systems for water splitting can efficiently decrease the external power consumption. A variety of green energy systems for efficient producing H 2 , such as two-electrode electrolysis of water, water splitting driven by photoelectrode devices, solar cells, thermoelectric devices, triboelectric nanogenerator, pyroelectric device or electrochemical water-gas shift device, have been developed recently. In this review, some notable progress made in the different green energy cells for water splitting is discussed in detail. We hoped this review can guide people to pay more attention to the development of green energy system to generate pollution-free H 2 energy, which will realize the whole process of H 2 production with low cost, pollution-free and energy sustainability conversion.

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Section: Pem Water Electrolysismentioning

confidence: 99%

Water Splitting: From Electrode to Green Energy System

et al. 2020

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“…Due to concerns regarding the formation of an oxide layer on the Pt-coating, Liu et al presented a thin sputtered iridium layer on top of the titanium PTL to improve electrical resistance and long-term durability. 15 Since coating the titanium PTL with a noble metal layer of Au, Pt or Ir increases the cost of PEMWEs, Bystron et al presented an etching technique to remove the oxide layer of the titanium PTLs (reduced electric resistance) while at the same time introducing Ti hydride on the titanium surface (corrosion protective layer, reduced oxide layer formation). 16 This cheap and effective alternative to expensive protective noble metal coatings improved the cell performance compared to untreated PTLs as well in terms of electrical resistance and durability.…”

Section: Figurementioning

confidence: 99%

Optimization of anodic porous transport electrodes for proton exchange membrane water electrolyzers

et al. 2019

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“…Due to harsh acidic conditions, high cell overpotentials, and oxygen evolution, the oxidation state of titanium (Ti 0 ) changes over time, leading to the significant degradation of titanium‐based components on the anode side. [ 6,21–24 ] At present, noble metals such as gold and platinum are used as protective coatings on PTLs and bipolar plates (BPs). [ 22–29 ] We have previously reported that cells assembled with platinum‐coated PTLs show substantially reduced degradation rates compared to cells with uncoated PTLs.…”

Section: Introductionmentioning

confidence: 99%

Exploring the Interface of Skin‐Layered Titanium Fibers for Electrochemical Water Splitting

Liu

Shviro

Gago

et al. 2021

Advanced Energy Materials

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Water electrolysis is the key to a decarbonized energy system, as it enables the conversion and storage of renewably generated intermittent electricity in the form of hydrogen. However, reliability challenges arising from titanium‐based porous transport layers (PTLs) have hitherto restricted the deployment of next‐generation water‐splitting devices. Here, it is shown for the first time how PTLs can be adapted so that their interface remains well protected and resistant to corrosion across ≈4000 h under real electrolysis conditions. It is also demonstrated that the malfunctioning of unprotected PTLs is a result triggered by additional fatal degradation mechanisms over the anodic catalyst layer beyond the impacts expected from iridium oxide stability. Now, superior durability and efficiency in water electrolyzers can be achieved over extended periods of operation with less‐expensive PTLs with proper protection, which can be explained by the detailed reconstruction of the interface between the different elements, materials, layers, and components presented in this work.

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Performance enhancement of PEM electrolyzers through iridium-coated titanium porous transport layers

Cited by 144 publications

References 21 publications

Water Splitting: From Electrode to Green Energy System

Water Splitting: From Electrode to Green Energy System

Optimization of anodic porous transport electrodes for proton exchange membrane water electrolyzers

Exploring the Interface of Skin‐Layered Titanium Fibers for Electrochemical Water Splitting

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