Reduction of Grain Boundary Resistance of La0.5Li0.5TiO3 by the Addition of Organic Polymers

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Boyano, Iker and Mainar, Aroa R. and Blázquez, J. Alberto and Kvasha, Andriy and Bengoechea, Miguel and Meatza, Iratxe de and García Martín, Susana and Varez Álvarez, Alejandro and Sanz, Jesús and García Alvarado, Flaviano (2021) Reduction of Grain Boundary Resistance of La0.5Li0.5TiO3 by the Addition of Organic Polymers. Nanomaterials, 11 (1). pp. 1-12. ISSN 2079-4991

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Official URL: https://doi.org/10.3390/nano11010061




Abstract

The organic solvents that are widely used as electrolytes in lithium ion batteries present safety challenges due to their volatile and flammable nature. The replacement of liquid organic electrolytes by non-volatile and intrinsically safe ceramic solid electrolytes is an effective approach to address the safety issue. However, the high total resistance (bulk and grain boundary) of such compounds, especially at low temperatures, makes those solid electrolyte systems unpractical for many applications where high power and low temperature performance are required. The addition of small quantities of a polymer is an efficient and low cost approach to reduce the grain boundary resistance of inorganic solid electrolytes. Therefore, in this work, we study the ionic conductivity of different composites based on non-sintered lithium lanthanum titanium oxide (La0.5Li0.5TiO3) as inorganic ceramic material and organic polymers with different characteristics, added in low percentage (<15 wt.%). The proposed cheap composite solid electrolytes double the ionic conductivity of the less cost-effective sintered La0.5Li0.5TiO3.


Item Type:Article
Uncontrolled Keywords:lithium lanthanum titanium oxide (LLTO); grain boundary resistance; solid ceramicpolymer composite electrolyte; lithium ion conductivity
Subjects:Sciences > Chemistry > Chemistry, Inorganic
ID Code:64372
Deposited On:08 Apr 2021 07:41
Last Modified:08 Apr 2021 11:35

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