Structure and properties relationships of beta-Al2O3 electrolyte materials

Zhu, Chengfei; Xue, Junmin

doi:10.1016/j.jallcom.2011.12.080

Cited by 42 publications

(21 citation statements)

References 12 publications

(10 reference statements)

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“…39 Various doping stabilizers such as Li + , Mg 2+ , Ni 2+ , and Ti 4+ have been added to the reaction system to prepare purer b 00 -Al 2 O 3 . [40][41][42][43][44] Unfortunately, the mechanical property of pure b 00 -Al 2 O 3 is relatively low (fracture strength: $200 MPa). 45 Thus, the main challenges are how to control the ratio of b 00 -Al 2 O 3 to realize good mechanical strength as well as high ionic conductivity and to reduce undesired side products.…”

Section: Fundamentals Of Ssementioning

confidence: 99%

Electrolyte and Interface Engineering for Solid-State Sodium Batteries

Lü

Liu

Zhang

et al. 2018

Joule

396

340

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Sodium batteries are considered as promising candidates for large-scale energystorage systems owing to the abundant and low-cost sodium resources. However, many reported sodium batteries are based on conventional organic liquid electrolyte, which would lead to potential safety issues. Developing solid-state electrolyte (SSE) for sodium batteries is an effective way to solve such problems. Nevertheless, how to develop high-performance SSE and compatible interface for constructing solid-state sodium batteries is still challenging. In this review, we mainly focus on the development and recent advances of SSE (including all-solid-state and quasisolid-state electrolyte) and interface engineering for sodium batteries. The structure-property correlations and design principles of different inorganic and organic SSE are discussed in depth. The comprehensive performance of SSE depends on the structural characteristics such as defects, crystallinity, and stability of bonds. The design principles mainly include increasing the density of mobile Na + ions, reducing the energy barrier, immobilizing anions, adjusting the stability of bonds, adding specific buffer layers, and increasing interfacial contact area. Moreover, we discuss the interface between SSE and electrode because a suitable interface is the key prerequisite for high-performance solid-state sodium batteries. This review provides fundamental insights and future perspectives to design advanced SSE and concomitant interface for next-generation rechargeable solid-state sodium batteries.

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Section: Fundamentals Of Ssementioning

confidence: 99%

Electrolyte and Interface Engineering for Solid-State Sodium Batteries

Lü

Liu

Zhang

et al. 2018

Joule

396

340

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“…The impedance spectra were analyzed by the equivalent circuit of the program Zview. [6,8]. So the sintering temperature of the precursor powder is at 1250 °C in this paper.…”

Section: Characterizationmentioning

confidence: 99%

“…In order to improve the ionic conductivity and mechanical property of the Nabeta-Al2O3 solid electrolyte, some elements were doped in the matrix material. For example, it could improve the conductivity by adding an appropriate amount of Li2O or MgO to the beta-Al2O3 solid electrolyte [6][7][8][9][10]. But it decreased the mechanical properties at the same time.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of NiO doped beta-Al2O3 solid electrolyte

Zhu

Hong

Huang

2016

Journal of Alloys and Compounds

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The beta-Al2O3 solid electrolyte with NiO doped and Li2O stabilized is synthesized via the solid state reaction method, which is starting with α-Al2O3, Li2CO3, Na2C2O4 and Ni(NO3)2•6H2O as the raw materials. Effects of the NiO content on the mechanical and electrical performances are studied by means of thermogravimetry/differential scanning calorimetry (TG/DSC), X-ray diffraction (XRD) and scanning electron microscopy (SEM). Meanwhile, the relative density, the bending strength and the electrical properties of the prepared samples are also measured in this paper. The beta-Al2O3 solid electrolyte with the appropriate amount of NiO has a higher β"-Al2O3 phase content and uniform microstructure with dense and plump grains. However, the excess NiO doping can lead the grain to molten state and make the pores become larger. It deteriorates the ionic conductivity. When the NiO content of the beta-Al2O3 solid electrolyte is 0.25wt%, the β"-Al2O3 phase

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“…This results in compositions of Na 1 [19]. It is supposed that a selective occupation of the Al 3+ sites in selected polyhedra play a crucial role for phase stabilization [137]. Using dedicated synthesis methods operating at temperatures of 1600°C, a raw material with a β "-Al 2 O 3 fraction up to 90 % can be achieved [127].…”

Section: Methodsmentioning

confidence: 99%

Separators - Technology review: Ceramic based separators for secondary batteries

Nestler¹,

Schmid²,

Münchgesang³

et al. 2014

AIP Conference Proceedings

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Abstract. Besides a continuous increase of the worldwide use of electricity, the electric energy storage technology market is a growing sector. At the latest since the German energy transition ("Energiewende") was announced, technological solutions for the storage of renewable energy have been intensively studied. Storage technologies in various forms are commercially available. A widespread technology is the electrochemical cell. Here the cost per kWh, e. g. determined by energy density, production process and cycle life, is of main interest. Commonly, an electrochemical cell consists of an anode and a cathode that are separated by an ion permeable or ion conductive membranethe separator -as one of the main components. Many applications use polymeric separators whose pores are filled with liquid electrolyte, providing high power densities. However, problems arise from different failure mechanisms during cell operation, which can affect the integrity and functionality of these separators. In the case of excessive heating or mechanical damage, the polymeric separators become an incalculable security risk. Furthermore, the growth of metallic dendrites between the electrodes leads to unwanted short circuits. In order to minimize these risks, temperature stable and non-flammable ceramic particles can be added, forming so-called composite separators. Full ceramic separators, in turn, are currently commercially used only for high-temperature operation systems, due to their comparably low ion conductivity at room temperature. However, as security and lifetime demands increase, these materials turn into focus also for future room temperature applications. Hence, growing research effort is being spent on the improvement of the ion conductivity of these ceramic solid electrolyte materials, acting as separator and electrolyte at the same time. Starting with a short overview of available separator technologies and the separator market, this review focuses on ceramic-based separators. Two prominent examples, the lithium-ion and sodium-sulfur battery, are described to show the current stage of development. New routes are presented as promising technologies for safe and long-life electrochemical storage cells.

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Structure and properties relationships of beta-Al2O3 electrolyte materials

Cited by 42 publications

References 12 publications

Electrolyte and Interface Engineering for Solid-State Sodium Batteries

Electrolyte and Interface Engineering for Solid-State Sodium Batteries

Synthesis and characterization of NiO doped beta-Al2O3 solid electrolyte

Separators - Technology review: Ceramic based separators for secondary batteries

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