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High Toughness Inorganic Solid Electrolytes via the Use of Reduced Graphene-Oxide

26 Pages Posted: 14 Jan 2020 Sneak Peek Status: Review Complete

See all articles by Christos E. Athanasiou

Christos E. Athanasiou

Brown University - School of Engineering

Mok Yun Jin

Brown University - School of Engineering

Cristina Ramirez

Brown University - School of Engineering

Nitin P. Padture

Brown University - School of Engineering

Brian W. Sheldon

Brown University - School of Engineering

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Abstract

Ceramic solid electrolytes are important emerging materials that have the potential to enable the safe use of Li metal anodes. However, they suffer from inherently low fracture toughness which significantly limits battery performance and reliability. While small electrolyte dimensions are generally needed for faster ion transport, these length scales also restrict the approaches that can be used to engineer higher fracture resistance. Inspired by the toughening that reduced graphene oxide provides to polymer and engineering ceramics, this approach is explored as a means to enhance the toughness of an oxide-based lithium ion conductor. An average KIc enhancement of 120% is demonstrated without altering the ionic and electronic behavior of the material. To our knowledge this is the toughest ceramic solid electrolyte reported to date. Based on these results, an analytical framework is developed to provide guidelines for designing ultra-tough solid electrolytes using 2D materials.

Keywords: solid state batteries, inorganic ceramic electrolytes, nanocomposites, graphene, fracture toughness

Suggested Citation

Athanasiou, Christos E. and Jin, Mok Yun and Ramirez, Cristina and Padture, Nitin P. and Sheldon, Brian W., High Toughness Inorganic Solid Electrolytes via the Use of Reduced Graphene-Oxide. MATTER-D-19-00518. Available at SSRN: https://ssrn.com/abstract=3517553 or http://dx.doi.org/10.2139/ssrn.3517553
This is a paper under consideration at Cell Press and has not been peer-reviewed.

Christos E. Athanasiou

Brown University - School of Engineering ( email )

Box 1860
Providence, RI 02912
United States

Mok Yun Jin

Brown University - School of Engineering

Box 1860
Providence, RI 02912
United States

Cristina Ramirez

Brown University - School of Engineering

Box 1860
Providence, RI 02912
United States

Nitin P. Padture

Brown University - School of Engineering

Box 1860
Providence, RI 02912
United States

Brian W. Sheldon (Contact Author)

Brown University - School of Engineering ( email )

Box 1860
Providence, RI 02912
United States

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