Recovery of hydrogen from gas mixture by an intermediate-temperature type proton conductor

Tanaka, Masahiro; Ohshima, T.

doi:10.1016/j.fusengdes.2010.01.007

Cited by 14 publications

(4 citation statements)

References 17 publications

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“…It has attractive advantages such as hydrogen extraction from both hydrogen molecules and hydrogen compounds; control by electric current, no pressurization. Comparing with a series of studies using the zirconate oxides series, we conclude that CaZr 0.9 In 0.1 O 3−␣ is of much practical use because it shows the highest proton transport number and does not exhibit oxide-ion conduction which affects the performance and the durability of hydrogen pump [33].…”

Section: Advanced Tritium System For Fuel Cyclementioning

confidence: 72%

Design activities on helical DEMO reactor FFHR-d1

Sagara

Goto

Miyazawa

et al. 2012

Fusion Engineering and Design

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Section: Advanced Tritium System For Fuel Cyclementioning

confidence: 72%

Design activities on helical DEMO reactor FFHR-d1

Sagara

Goto

Miyazawa

et al. 2012

Fusion Engineering and Design

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“…Recently, the possibility of using an electrochemical hydrogen pump (EHP) in the fuel cycle circuit for extracting, purifying and compressing hydrogen (including all isotopes) in the gas phase has also been growing in popularity [3][4][5]. However, only EHPs based on solid oxide electrolytes have been studied for application in this area [6][7][8]. The main disadvantage of such devices is low current densities (less than 10 mA•cm −2 ) and hence low efficiency and high power consumption [7].…”

Section: Introductionmentioning

confidence: 99%

“…However, only EHPs based on solid oxide electrolytes have been studied for application in this area [6][7][8]. The main disadvantage of such devices is low current densities (less than 10 mA•cm −2 ) and hence low efficiency and high power consumption [7]. The use of PEM can provide a significantly higher proton conductivity and current densities of about 1 A•cm −2 [9].…”

Section: Introductionmentioning

confidence: 99%

Features of Electrochemical Hydrogen Pump Based on Irradiated Proton Exchange Membrane

Ivanova,

Ivanov,

Mensharapov

et al. 2023

Membranes

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An electrochemical hydrogen pump (EHP) with a proton exchange membrane (PEM) used as part of fusion cycle systems successfully combines the processes of hydrogen extraction, purification and compression in a single device. This work comprises a novel study of the effect of ionizing radiation on the properties of the PEM as part of the EHP. Radiation exposure leads to nonspecific degradation of membranes, changes in their structure, and destruction of side and matrix chains. The findings from this work reveal that the replacement of sulfate groups in the membrane structure with carboxyl and hydrophilic groups leads to a decrease in conductivity from 0.115 to 0.103 S cm−1, which is reflected in halving the device performance at a temperature of 30 °C. The shift of the ionomer peak of small-angle X-ray scattering curves from 3.1 to 4.4 nm and the absence of changes in the water uptake suggested structural changes in the PEM after the irradiation. Increasing the EHP operating temperature minimized the effect of membrane irradiation on the pump performance, but enhanced membrane drying at low pressure and 50 °C, which caused a current density drop from 0.52 to 0.32 A·cm−2 at 0.5 V.

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“…Ken Kurosaki et al reported that BaZrO 3 exhibits high thermal conductivity due to the high strength between Zr and O [ 34 ]. However, the BaZrO 3 -based proton conductor’s proton conductivity is lower than the BaCeO 3 -based proton conductor, which can be improved by doping with trivalent cations such as Gd 3+ , Y 3+ , In 3+ , Yb 3+ [ 35 , 36 ]. Pergolesi et al have reported that Y 3+ doped in BaZrO 3 enhances chemical stability, but the poor sinterability increases grain-boundary resistance, which is responsible for reducing proton conductivity [ 37 ].…”

Section: Introductionmentioning

confidence: 99%

A Review of Applications, Prospects, and Challenges of Proton-Conducting Zirconates in Electrochemical Hydrogen Devices

et al. 2022

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In the future, when fossil fuels are exhausted, alternative energy sources will be essential for everyday needs. Hydrogen-based energy can play a vital role in this aspect. This energy is green, clean, and renewable. Electrochemical hydrogen devices have been used extensively in nuclear power plants to manage hydrogen-based renewable fuel. Doped zirconate materials are commonly used as an electrolyte in these electrochemical devices. These materials have excellent physical stability and high proton transport numbers, which make them suitable for multiple applications. Doping enhances the physical and electronic properties of zirconate materials and makes them ideal for practical applications. This review highlights the applications of zirconate-based proton-conducting materials in electrochemical cells, particularly in tritium monitors, tritium recovery, hydrogen sensors, and hydrogen pump systems. The central section of this review summarizes recent investigations and provides a comprehensive insight into the various doping schemes, experimental setup, instrumentation, optimum operating conditions, morphology, composition, and performance of zirconate electrolyte materials. In addition, different challenges that are hindering zirconate materials from achieving their full potential in electrochemical hydrogen devices are discussed. Finally, this paper lays out a few pathways for aspirants who wish to undertake research in this field.

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Recovery of hydrogen from gas mixture by an intermediate-temperature type proton conductor

Cited by 14 publications

References 17 publications

Design activities on helical DEMO reactor FFHR-d1

Design activities on helical DEMO reactor FFHR-d1

Features of Electrochemical Hydrogen Pump Based on Irradiated Proton Exchange Membrane

A Review of Applications, Prospects, and Challenges of Proton-Conducting Zirconates in Electrochemical Hydrogen Devices

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