The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Bin Zhu - One of the best experts on this subject based on the ideXlab platform.
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Advanced Fuel cell based on perovskite la srtio3 semiconductor as the electrolyte with superoxide ion conduction
ACS Applied Materials & Interfaces, 2018Co-Authors: Gang Chen, Bin Zhu, Hui Deng, Yadan Luo, Wenkang Sun, Hailiang Liu, Wei Zhang, Xunying Wang, Yumin QianAbstract:A solid oxide Fuel cell’s performance is largely determined by the ionic-conducting electrolyte. A novel approach is presented for using the semiconductor perovskite La0.25Sr0.75TiO3 (LST) as the electrolyte by creating surface superionic conduction, and the authors show that the LST electrolyte can deliver superior power density, 908.2 mW cm–2 at just 550 °C. The prepared LST materials formed a heterostructure, including an insulating core and a superionic conducting surface layer. The rapid ion transport along the surfaces or grain boundaries was identified as the primary means of oxygen ion conduction. The Fuel cell-induced phase transition was observed from the insulating LST to a super O2– conductivity of 0.221 S cm–1 at 550 °C, leading to excellent current and power outputs.
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electrical properties of nanocube ceo2 in Advanced solid oxide Fuel cells
International Journal of Hydrogen Energy, 2018Co-Authors: Bin Zhu, Jing Zhang, Chunjie YanAbstract:Abstract Search for electrolyte materials with a high ionic conductivity at low temperatures has always been a key challenge for the development of solid oxide Fuel cells (SOFCs). In present work, we found un-doped CeO2 nanocubes used as an electrolyte for Advanced Fuel cell showed remarkable performances. The CeO2 nanocubes were synthesized by a simple hydrothermal approach. The synthesized CeO2 nanocubes were used as an electrolyte sandwiched between two layers of semiconducting Ni0.8Co0.15Al0.05LiO2-δ to fabricate the Fuel cell. Such device has achieved an excellent maximum power density of 406 mW cm−2 at 600 °C. These results demonstrate CeO2/CeO2-δ heterogeneous interfaces could provide a high ionic conductive path conductor for the electrolyte in SOFCs, which widen the selecting range of the electrolyte candidates for Advanced SOFCs.
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Advanced Fuel Cell Based on Perovskite La–SrTiO3 Semiconductor as the Electrolyte with Superoxide-Ion Conduction
2018Co-Authors: Gang Chen, Bin Zhu, Hui Deng, Yadan Luo, Wenkang Sun, Hailiang Liu, Wei Zhang, Xunying Wang, Yumin QianAbstract:A solid oxide Fuel cell’s performance is largely determined by the ionic-conducting electrolyte. A novel approach is presented for using the semiconductor perovskite La0.25Sr0.75TiO3 (LST) as the electrolyte by creating surface superionic conduction, and the authors show that the LST electrolyte can deliver superior power density, 908.2 mW cm–2 at just 550 °C. The prepared LST materials formed a heterostructure, including an insulating core and a superionic conducting surface layer. The rapid ion transport along the surfaces or grain boundaries was identified as the primary means of oxygen ion conduction. The Fuel cell-induced phase transition was observed from the insulating LST to a super O2– conductivity of 0.221 S cm–1 at 550 °C, leading to excellent current and power outputs
Yumin Qian - One of the best experts on this subject based on the ideXlab platform.
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Advanced Fuel cell based on perovskite la srtio3 semiconductor as the electrolyte with superoxide ion conduction
ACS Applied Materials & Interfaces, 2018Co-Authors: Gang Chen, Bin Zhu, Hui Deng, Yadan Luo, Wenkang Sun, Hailiang Liu, Wei Zhang, Xunying Wang, Yumin QianAbstract:A solid oxide Fuel cell’s performance is largely determined by the ionic-conducting electrolyte. A novel approach is presented for using the semiconductor perovskite La0.25Sr0.75TiO3 (LST) as the electrolyte by creating surface superionic conduction, and the authors show that the LST electrolyte can deliver superior power density, 908.2 mW cm–2 at just 550 °C. The prepared LST materials formed a heterostructure, including an insulating core and a superionic conducting surface layer. The rapid ion transport along the surfaces or grain boundaries was identified as the primary means of oxygen ion conduction. The Fuel cell-induced phase transition was observed from the insulating LST to a super O2– conductivity of 0.221 S cm–1 at 550 °C, leading to excellent current and power outputs.
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Advanced Fuel Cell Based on Perovskite La–SrTiO3 Semiconductor as the Electrolyte with Superoxide-Ion Conduction
2018Co-Authors: Gang Chen, Bin Zhu, Hui Deng, Yadan Luo, Wenkang Sun, Hailiang Liu, Wei Zhang, Xunying Wang, Yumin QianAbstract:A solid oxide Fuel cell’s performance is largely determined by the ionic-conducting electrolyte. A novel approach is presented for using the semiconductor perovskite La0.25Sr0.75TiO3 (LST) as the electrolyte by creating surface superionic conduction, and the authors show that the LST electrolyte can deliver superior power density, 908.2 mW cm–2 at just 550 °C. The prepared LST materials formed a heterostructure, including an insulating core and a superionic conducting surface layer. The rapid ion transport along the surfaces or grain boundaries was identified as the primary means of oxygen ion conduction. The Fuel cell-induced phase transition was observed from the insulating LST to a super O2– conductivity of 0.221 S cm–1 at 550 °C, leading to excellent current and power outputs
Ray Grout - One of the best experts on this subject based on the ideXlab platform.
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experimental and numerical investigation of the Advanced Fuel ignition delay analyzer afida constant volume combustion chamber as a research platform for Fuel chemical kinetic mechanism validation
Fuel, 2020Co-Authors: Jon Luecke, Mohammad J Rahimi, Bradley T Zigler, Ray GroutAbstract:Abstract Advanced combustion engine strategies that can offer increased efficiency and reduced emissions are enabled by numerical engine combustion simulations, requiring accurate chemical kinetic mechanism input. The Advanced Fuel Ignition Delay Analyzer (AFIDA) device can perform high quality, repeatable measurements of ignition delay (ID) times using small Fuel quantities with high throughput. The AFIDA experiments involve liquid Fuel injection into the heated and pressurized constant-volume chamber, producing an autoignition delay resulting from a combination of physical mixing and chemical kinetic processes, a complexity which makes the development of complementary numerical models necessary for the development and validation of chemical kinetic mechanisms. Modeling the device based on a homogenous approximation with reduced primary reference Fuel (PRF) mechanism shows up to 75% error in the modeled vs. observed autoignition delay data for n-heptane and iso-octane at 10 bar (ɸ = 1.2–0.8) and 20 bar (ɸ = 0.6–0.4) over 973–648 K, whereas the use of a computational fluid dynamics (CFD) model reduces the discrepancy to within 25%. The homogenous approximation error is greatest for conditions where the observed ignition delay is short and the system is not sufficiently mixed (
Nariaki Uto - One of the best experts on this subject based on the ideXlab platform.
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A summary of sodium-cooled fast reactor development
Progress in Nuclear Energy, 2014Co-Authors: Kazumi Aoto, Robert Hill, Philippe Dufour, Yang Hongyi, Jean Paul Glatz, Yeong-il Kim, Yury Ashurko, Nariaki UtoAbstract:Abstract Much of the basic technology for the Sodium-cooled fast Reactor (SFR) has been established through long term development experience with former fast reactor programs, and is being confirmed by the Phenix end-of-life tests in France, the restart of Monju in Japan, the lifetime extension of BN-600 in Russia, and the startup of the China Experimental Fast Reactor in China. Planned startup in 2014 for new SFRs: BN-800 in Russia and PFBR in India, will further enhance the confirmation of the SFR basic technology. Nowadays, the SFR development has Advanced to aiming at establishment of the Generation-IV system which is dedicated to sustainable energy generation and actinide management, and several Advanced SFR concepts are under development such as PRISM, JSFR, ASTRID, PGSFR, BN-1200, and CFR-600. Generation-IV International Forum is an international collaboration framework where various R&D activities are progressing on design of system and component, safety and operation, Advanced Fuel, and actinide cycle for the Generation-IV SFR development, and will play a beneficial role of promoting them thorough providing an opportunity to share the past experience and the latest data of design and R&D among countries developing SFR.
G Palmiotti - One of the best experts on this subject based on the ideXlab platform.
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physics challenges for Advanced Fuel cycle assessment
Journal of Nuclear Science and Technology, 2015Co-Authors: M Salvatores, G Aliberti, G PalmiottiAbstract:Advanced Fuel cycles and associated optimized reactor designs will require substantial improvements in key research area to meet new and more challenging requirements. The present paper reviews challenges and issues in the field of reactor and Fuel cycle physics. Typical examples are discussed with, in some cases, original results.
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radioactive waste partitioning and transmutation within Advanced Fuel cycles achievements and challenges
Progress in Particle and Nuclear Physics, 2011Co-Authors: M Salvatores, G PalmiottiAbstract:Abstract If nuclear power becomes a sustainable source of energy, a safe, robust, and acceptable solution must be pursued for existing and projected inventories of high-activity, long-lived radioactive waste. Remarkable progress in the field of geological disposal has been made in the last two decades. Some countries have reached important milestones, and geological disposal (of spent Fuel) is expected to start in 2020 in Finland and in 2022 in Sweden. In fact, the licensing of the geological repositories in both countries is now entering into its final phase. In France, disposal of intermediate-level waste (ILW) and vitrified high-level waste (HLW) is expected to start around 2025, according to the roadmap defined by an Act of Parliament in 2006. In this context, transmutation of part of the waste through use of Advanced Fuel cycles, probably feasible in the coming decades, can reduce the burden on the geological repository. This article presents the physical principle of transmutation and reviews several strategies of partitioning and transmutation (P&T). Many recent studies have demonstrated that the impact of P&T on geological disposal concepts is not overwhelmingly high. However, by reducing waste heat production, a more efficient utilization of repository space is likely. Moreover, even if radionuclide release from the waste to the environment and related calculated doses to the population are only partially reduced by P&T, it is important to point out that a clear reduction of the actinide inventory in the HLW definitely reduces risks arising from less probable evolutions of a repository (i.e., an increase of actinide mobility in certain geochemical situations and radiological impact by human intrusion).