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Liao Q.,Shanghai University of Electric Power | Sun B.,Shanghai University of Electric Power | Liu Y.,CAS Shanghai Institute of Ceramics | Liu Y.,Shanghai Electrical Sodium Sulfur Batteries Energy Storage Technology Co. | And 2 more authors.
International Journal of Energy Research | Year: 2016

The merits of electricity grid in Shanghai and sodium sulfur (NaS) storage techniques situation are introduced. High-energy NaS battery energy storage system (BESS) is very suitable for peak shaving of electricity grid. A cost-benefit analysis model of NaS BESS is established to study the electricity price mechanism in load shift in the light of an example of NaS BESS in Meisei University. Capacity price, energy price and twofold electricity price mechanism are discussed under the fixed payback period. The results show that twofold electric power price mechanism is fitter for NaS BESS than onefold energy price mechanism while onefold capacity price mechanism is not suitable for NaS BESS. The discharge price of NaS BESS has an advantage over Shanghai's electricity price in industrial and commercial peak periods when its construction cost descends to 1000yuankWh-1. © 2016 John Wiley & Sons, Ltd.


Zhao K.,CAS Shanghai Institute of Ceramics | Liu Y.,CAS Shanghai Institute of Ceramics | Liu Y.,Shanghai Electrical Sodium sulfur Batteries Energy Storage Technology Co. | Zeng S.M.,CAS Shanghai Institute of Ceramics | And 4 more authors.
Ceramics International | Year: 2016

This work focused on the preparation and characterization of a Mg2+ stabilized 8wt%-ZrO2-2wt%-TiO2-co-doped Na-β''-Al2O3 ceramic thin film. A fine powder with high β''-phase (Na1.76Mg0.67Al10.33O17) purity of 96.86% was obtained by a modified solid state reaction. ZrO2 and TiO2 were doped into the pristine Na-β''-Al2O3 ceramic to achieve a high mechanical strength and a high densification. The sintered 8wt%-ZrO2-2wt%-TiO2-co-doped Na-β''-Al2O3 pellet exhibits a mechanical strength of 192Mpa and an ionic conductivity of 0.28Scm-1 at 350°C. An environmentally friendly tape casting method was utilized to prepare the Mg2+ stabilized Na-β''-Al2O3 green tape. The dense Na-β''-Al2O3 thin film with a thickness of approximately 100μm was obtained by sintering the green tape at 1500°C for 2h. It is a promising electrolyte for the development of the room temperature ceramic-based sodium ion battery. © 2016 Elsevier Ltd and Techna Group S.r.l.


Zhang J.,Shanghai University of Electric Power | Liu F.,Shanghai University of Electric Power | Liu Y.,CAS Shanghai Institute of Ceramics | Zhu M.,Shanghai Electrical Sodium Sulfur Batteries Energy Storage Technology Co. | Zhu X.,Shanghai Electrical Sodium Sulfur Batteries Energy Storage Technology Co.
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | Year: 2013

In order to improve the life of Na-S battery by enhancing the reliability of ceramic tubes, a numerical simulation on the mechanical strength of β″-Al2O3 ceramics tube as the key components of Na-S battery was carried out by using a software named ANSYS based on the finite element theory. The variation of maximum stress for the ceramic tube with its size was obtained. The simulated results indicate that the maximum stress of the ceramic tube subjected to inner or outer pressure increases with decreasing the wall thickness and the length, but decreases with the reduction of the length and the diameter. The shrinking of the diameter and the wall thickness has little impact on the stress change. The simulation method provides a guideline for the optimization design of mechanical strength when the size of ceramic tube reduces.


Zhang J.,Shanghai University of Electric Power | Liu Y.,CAS Shanghai Institute of Ceramics | Zhang K.,Shanghai University of Electric Power | Zhu X.,Shanghai Electrical Sodium sulfur Batteries Energy storage Technology Co. | Zhu M.,Shanghai Electrical Sodium sulfur Batteries Energy storage Technology Co.
Cailiao Kexue yu Gongyi/Material Science and Technology | Year: 2014

Aiming at the problem of easy failure of the β ″-Al2O3 ceramic tube which is the core component of energy storage sodium sulfur battery, the mathematical model of ceramic tubes was built by using cylindrical shell theory, and the solid model and the numerical simulation were carried out by using ANSYS software. The quantitative relationships among the wall thickness, the diameter, the length for the ceramic tube and its mechanical strength were given. The results indicate that the maximum stress is located at the root of ceramic tubes, and increases with the decrease of the wall thickness or the increase of the diameter, but it is almost independent of the length, and the critical curve between the wall thickness and the diameter for ceramic tubes almost presents the linear trend, which provides quantitative guidance for optimal design of mechanical strength for ceramic tubes. ©, 2014, Harbin Institute of Technology. All right reserved.

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