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Garnet-type cubic phase Li 7 La 3 Zr 2 O 12 (LLZO) solid-state electrolytes (SSEs) have attracted much attention due to their high ionic conductivity, wide electrochemical window, and excellent stability towards lithium. However, LLZO SSEs still face some urgent problems, such as insufficient ionic conductivity, poor stability in the air, and large impedance at the anode/cathode interface.
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The surface chemistry of garnet electrolyte is sensitive to air exposure. The poor LLZO/Li interface caused by Li2CO3/LiOH contaminants on garnet electrolyte surface easily induces large.
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All-solid-state lithium batteries (ASSLBs), which use solid electrolytes instead of liquid ones, have become a hot research topic due to their high energy and power density, ability to solve battery safety issues, and capabilities to fulfill the increasing demand for energy storage in electric vehicles and smart grid applications. Garnet-type solid electrolytes have attracted considerable.
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ABSTRACT: Garnet solid-electrolyte-based Li-metal batteries can be used in energy storage devices with high energy densities and thermal stability. However, the tendency of garnets to form lithium hydroxide and carbonate on the surface in an ambient atmosphere poses significant processing challenges. In this work, the decomposition of surface.
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Ferraresi et al. [201] etched the garnet-type SSEs surface with Ar + sputtering plasma to remove contaminants before depositing Si (50 nm) on the surface of garnet-type SSEs as a thin film electrode. The results show that the initial capacity of Si/garnet/Li ASSLBs is about 2702 mAh• g − 1 , which cycled more than 100 cycles.
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During SPS process, the flexible graphite layer can in-situ "adhere" onto garnet surface under pressure and heating, thus enable a conformal, tight and intimate interfacial contact with garnet.. In contact with Li anode, the integrated graphite modified layer turns into Li x C 6 and enables the compatibility of garnet transform from lithiophobic to lithiophilic, radically reducing the.
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Garnet-type Li 7 La 3 Zr 2 O 12 (LLZO) solid electrolytes (SE) demonstrates appealing ionic conductivity properties for all-solid-state lithium metal battery applications. However, LLZO (electro.
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Chemical stability of garnet-type lithium ion conductors is one of the critical issues in their application in all-solid-state batteries. Here, we conducted quantitative analysis of impurity layers on the garnet-type solid electrolytes, Li6.5La3-xAExZr1.5-xTa0.5+xO12 (x = 0 and 0.1; AE = Ca, Sr, and Ba), by means of X-ray photoelectron spectroscopy (XPS) and electrochemical methods. Two.
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The conformal oxide layer on LM enables a smooth brushing of LM paint on solid electrolyte surface, which can prevent garnet from further exposure to water and O 2 in air. In addition, LM can.
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Among the plethora of solid-state electrolytes (SSEs) investigated, garnet-type Li-ion electrolytes based on cubic Li 7 La 3 Zr 2 O 12 (LLZO) are considered the most appealing candidates for the.
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Abstract. To satisfy the ever-increasing demand for higher energy density, solid-state batteries (SSBs) have received significant attention due to their potential in providing energy densities greater than 400 Wh kg −1.And as a key material in SSBs, the garnet-type Li 7 La 3 Zr 2 O 12 (LLZO) electrolyte is particularly promising because of its high ionic conductivity at room temperature and.
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Li 7 La 3 Zr 2 O 12 (LLZO) garnet-based materials doped with Al, Nb, or Ta to stabilize the Li +-conductive cubic phase are a particularly promising class of solid electrolytes for all-solid-state lithium metal batteries.Understanding of the intrinsic reactivity between solid electrolytes and relevant electrode materials is crucial to developing high voltage solid-state batteries with long.
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Solid-state lithium metal batteries (SSLMBs) have been widely considered as an "enabler" for the next-generation high-energy density batteries and simultaneously solve the safety issues of liquid lithium-ion batteries. Garnet-type Li7La3Zr2O12 (LLZO) is one of the most promising solid electrolyte (SE) materials for SSLMBs. In the past decade, great advances for LLZO have been achieved in.
Meanings, Properties and Uses
Among different types of solid-state electrolytes, garnet-type Li7La3Zr2O12 (LLZO) solid-state electrolytes have particularly high ionic conductivity (10-3 to 10-4 S/cm) and good chemical.
Crystal structure of at ambient conditions. Download
Cheng, L. et al. Effect of surface microstructure on electrochemical performance of garnet solid electrolytes. ACS Appl. Mater. interfaces 7 , 2073-2081 (2015). CAS Google Scholar
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Garnet solid-electrolyte-based Li-metal batteries can be used in energy storage devices with high energy densities and thermal stability. However, the tendency of garnets to form lithium hydroxide and carbonate on the surface in an ambient atmosphere poses significant processing challenges. In this work, the decomposition of surface layers under various gas environments is studied by using two.