The Experts below are selected from a list of 81 Experts worldwide ranked by ideXlab platform
Rui Xiao - One of the best experts on this subject based on the ideXlab platform.
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Chemical looping Hydrogen Storage and production: use of binary ferrite-spinel as oxygen carrier materials
Sustainable Energy & Fuels, 2020Co-Authors: Yu Qiu, Dongxu Cui, Shuai Zhang, Dewang Zeng, Rui XiaoAbstract:Chemical looping Hydrogen Storage and the recovery of iron oxides by the redox cycles were recommended as an emerging approach for Large-Scale Hydrogen Storage with a high volumetric Hydrogen Storage density. However, iron oxides should be operated at a high temperature (>800 °C) for its sufficient redox activity, which would lead to a rapid deterioration of Hydrogen Storage performance over cycles. In this work, a series of ferrite-spinel materials A0.25Fe2.75O4 (A = Co, Cu, Ni, Zn or Mn) were prepared. Among all the additives to iron oxides, Co0.25Fe2.75O4 exhibits the highest volumetric Hydrogen Storage density (∼62.47 g L−1) and an average Hydrogen production rate (∼132 μmol g−1 min−1) under 550 °C. Besides, the Storage capacity was maintained over 10 cycles. The volumetric Hydrogen Storage density of this material was proportionate to the most advanced Rh–FeOx containing rare-earth metal; thus, it may have the potential for industrial application.
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A high-performance ternary ferrite-spinel material for Hydrogen Storage via chemical looping redox cycles
International Journal of Hydrogen Energy, 2020Co-Authors: Dewang Zeng, Yu Qiu, Dongxu Cui, Shuai Zhang, Rui XiaoAbstract:Abstract Chemical looping has been proposed as an emerging technology for Large-Scale Hydrogen Storage with the advantages of high volumetric Hydrogen Storage density, environmental compatibility, and safety. However, to ensure sufficient redox activity, conventional oxygen carrier materials must be operated at a temperature higher than 800 °C, leading to the rapid deterioration on the Storage capacity over several cycles. In this work, we report a ternary ferrite-spinel material Cu0.5Co0.5Fe2O4 for chemical looping Hydrogen Storage and production. The material exhibits high volumetric Hydrogen Storage density (65.58 g·L−1) and average Hydrogen production rate (142 μmol·g−1·min−1) at 550 °C. The performance is maintained with negligible deactivation over repetitive redox cycles. The high performance can be attributed to the ability of Cu and Co to improve the reduction and the reversible phase change during the oxidation stage at moderate temperatures. The performance of the Cu0.5Co0.5Fe2O4 is comparable to the state-of-the-art Rh-FeOx containing rare earth metals, which enables its potential in industry application.
Dewang Zeng - One of the best experts on this subject based on the ideXlab platform.
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Chemical looping Hydrogen Storage and production: use of binary ferrite-spinel as oxygen carrier materials
Sustainable Energy & Fuels, 2020Co-Authors: Yu Qiu, Dongxu Cui, Shuai Zhang, Dewang Zeng, Rui XiaoAbstract:Chemical looping Hydrogen Storage and the recovery of iron oxides by the redox cycles were recommended as an emerging approach for Large-Scale Hydrogen Storage with a high volumetric Hydrogen Storage density. However, iron oxides should be operated at a high temperature (>800 °C) for its sufficient redox activity, which would lead to a rapid deterioration of Hydrogen Storage performance over cycles. In this work, a series of ferrite-spinel materials A0.25Fe2.75O4 (A = Co, Cu, Ni, Zn or Mn) were prepared. Among all the additives to iron oxides, Co0.25Fe2.75O4 exhibits the highest volumetric Hydrogen Storage density (∼62.47 g L−1) and an average Hydrogen production rate (∼132 μmol g−1 min−1) under 550 °C. Besides, the Storage capacity was maintained over 10 cycles. The volumetric Hydrogen Storage density of this material was proportionate to the most advanced Rh–FeOx containing rare-earth metal; thus, it may have the potential for industrial application.
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A high-performance ternary ferrite-spinel material for Hydrogen Storage via chemical looping redox cycles
International Journal of Hydrogen Energy, 2020Co-Authors: Dewang Zeng, Yu Qiu, Dongxu Cui, Shuai Zhang, Rui XiaoAbstract:Abstract Chemical looping has been proposed as an emerging technology for Large-Scale Hydrogen Storage with the advantages of high volumetric Hydrogen Storage density, environmental compatibility, and safety. However, to ensure sufficient redox activity, conventional oxygen carrier materials must be operated at a temperature higher than 800 °C, leading to the rapid deterioration on the Storage capacity over several cycles. In this work, we report a ternary ferrite-spinel material Cu0.5Co0.5Fe2O4 for chemical looping Hydrogen Storage and production. The material exhibits high volumetric Hydrogen Storage density (65.58 g·L−1) and average Hydrogen production rate (142 μmol·g−1·min−1) at 550 °C. The performance is maintained with negligible deactivation over repetitive redox cycles. The high performance can be attributed to the ability of Cu and Co to improve the reduction and the reversible phase change during the oxidation stage at moderate temperatures. The performance of the Cu0.5Co0.5Fe2O4 is comparable to the state-of-the-art Rh-FeOx containing rare earth metals, which enables its potential in industry application.
Yasuhiko H. Mori - One of the best experts on this subject based on the ideXlab platform.
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Comparative study of Large-Scale Hydrogen Storage technologies: Is hydrate-based Storage at advantage over existing technologies?
International Journal of Hydrogen Energy, 2014Co-Authors: Makoto Ozaki, Tomura Shigeo, Ryo Ohmura, Yasuhiko H. MoriAbstract:Abstract Different technologies possibly applicable for Large-Scale Hydrogen Storage in urban or industrial-complex areas have been comparatively evaluated, focusing on the facility-construction costs, the utility expense, and the ground area required for the facility for each technology. The specific technologies examined in this study are the Storage in the form of compressed or liquefied gas, the Storage using a metal hydride, and the Storage using a clathrate hydrate. The common requirements for these technologies are the function of loading or unloading Hydrogen gas at a rate up to 3000 Nm 3 /h and also the Storage capacity of 6.48 × 10 6 Nm 3 that enables continuous 90-day loading or unloading at the rate of 3000 Nm 3 /h. The Storage using a clathrate hydrate is found to require the minimum ground area and, if the cool energy necessary for hydrate production is available from adjacent LNG facilities, the minimum annual depreciation + utility expense.
Yu Qiu - One of the best experts on this subject based on the ideXlab platform.
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Chemical looping Hydrogen Storage and production: use of binary ferrite-spinel as oxygen carrier materials
Sustainable Energy & Fuels, 2020Co-Authors: Yu Qiu, Dongxu Cui, Shuai Zhang, Dewang Zeng, Rui XiaoAbstract:Chemical looping Hydrogen Storage and the recovery of iron oxides by the redox cycles were recommended as an emerging approach for Large-Scale Hydrogen Storage with a high volumetric Hydrogen Storage density. However, iron oxides should be operated at a high temperature (>800 °C) for its sufficient redox activity, which would lead to a rapid deterioration of Hydrogen Storage performance over cycles. In this work, a series of ferrite-spinel materials A0.25Fe2.75O4 (A = Co, Cu, Ni, Zn or Mn) were prepared. Among all the additives to iron oxides, Co0.25Fe2.75O4 exhibits the highest volumetric Hydrogen Storage density (∼62.47 g L−1) and an average Hydrogen production rate (∼132 μmol g−1 min−1) under 550 °C. Besides, the Storage capacity was maintained over 10 cycles. The volumetric Hydrogen Storage density of this material was proportionate to the most advanced Rh–FeOx containing rare-earth metal; thus, it may have the potential for industrial application.
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A high-performance ternary ferrite-spinel material for Hydrogen Storage via chemical looping redox cycles
International Journal of Hydrogen Energy, 2020Co-Authors: Dewang Zeng, Yu Qiu, Dongxu Cui, Shuai Zhang, Rui XiaoAbstract:Abstract Chemical looping has been proposed as an emerging technology for Large-Scale Hydrogen Storage with the advantages of high volumetric Hydrogen Storage density, environmental compatibility, and safety. However, to ensure sufficient redox activity, conventional oxygen carrier materials must be operated at a temperature higher than 800 °C, leading to the rapid deterioration on the Storage capacity over several cycles. In this work, we report a ternary ferrite-spinel material Cu0.5Co0.5Fe2O4 for chemical looping Hydrogen Storage and production. The material exhibits high volumetric Hydrogen Storage density (65.58 g·L−1) and average Hydrogen production rate (142 μmol·g−1·min−1) at 550 °C. The performance is maintained with negligible deactivation over repetitive redox cycles. The high performance can be attributed to the ability of Cu and Co to improve the reduction and the reversible phase change during the oxidation stage at moderate temperatures. The performance of the Cu0.5Co0.5Fe2O4 is comparable to the state-of-the-art Rh-FeOx containing rare earth metals, which enables its potential in industry application.
Cornelia Schmidt-hattenberger - One of the best experts on this subject based on the ideXlab platform.
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Enabling Large-Scale Hydrogen Storage in porous media – the scientific challenges
Energy & Environmental Science, 2021Co-Authors: Niklas Heinemann, Juan Alcalde, Johannes M. Miocic, Suzanne Hangx, Jens Kallmeyer, Christian Ostertag-henning, Aliakbar Hassanpouryouzband, Eike Marie Thaysen, Gion J. Strobel, Cornelia Schmidt-hattenbergerAbstract:Expectations for energy Storage are high but Large-Scale underground Hydrogen Storage in porous media (UHSP) remains largely untested. This article identifies and discusses the scientific challenges of Hydrogen Storage in porous media for safe and efficient Large-Scale energy Storage to enable a global Hydrogen economy. To facilitate Hydrogen supply on the scales required for a zero-carbon future, it must be stored in porous geological formations, such as saline aquifers and depleted hydrocarbon reservoirs. Large-Scale UHSP offers the much-needed capacity to balance inter-seasonal discrepancies between demand and supply, decouple energy generation from demand and decarbonise heating and transport, supporting decarbonisation of the entire energy system. Despite the vast opportunity provided by UHSP, the maturity is considered low and as such UHSP is associated with several uncertainties and challenges. Here, the safety and economic impacts triggered by poorly understood key processes are identified, such as the formation of corrosive Hydrogen sulfide gas, Hydrogen loss due to the activity of microbes or permeability changes due to geochemical interactions impacting on the predictability of Hydrogen flow through porous media. The wide range of scientific challenges facing UHSP are outlined to improve procedures and workflows for the Hydrogen Storage cycle, from site selection to Storage site operation. Multidisciplinary research, including reservoir engineering, chemistry, geology and microbiology, more complex than required for CH4 or CO2 Storage is required in order to implement the safe, efficient and much needed Large-Scale commercial deployment of UHSP.
