Presentation Title

Electrospun LiMn2O4 Nanofibers for Highly Selective Lithium Ion Recovery from Brine

Start Date

November 2016

End Date

November 2016

Location

HUB 302-#62

Type of Presentation

Poster

Abstract

The necessity for recovering lithium owes to its significance in industry, namely, pharmaceuticals, batteries, and manufacturing. Current methods of extracting lithium from brine are time and resource intensive. New technologies, specifically, reverse osmosis, magnesium reduction [2], and manganese oxide adsorbent [3], for extracting lithium have gained notoriety in recent years. Using manganese oxide as an adsorbent is of particular interest for its high lithium uptake, inexpensive material cost, and environmentally benign properties [4]. LiMn2O4 is a promising material proven to extract lithium from aqueous environments including brine, sea-water, and wastewater [3]. Nanostructure based materials have shown enhanced extraction and selectivity properties due to the large interface area which allows for higher lithium ion diffusion. Compared to other synthesis methods of synthetic powders or specialized composites, electrospinning is advantageous because it is cost-effective and scalable. Using this principle, we fabricate spinel LiMn2O4 nanofibers due to their innately high surface area as a one-dimensional nanostructure. For enhanced lithium extraction properties, the synthesis of smaller crystallite size and large surface area nanofiber membranes are necessary to maximize lithium extraction and selectivity. Further characterization through Scanning Electron Microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDX), and X-Ray Powder Diffraction (XRD) were used to verify the cubic structure, morphology, and crystallinity of LiMn2O4.

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Nov 12th, 4:00 PM Nov 12th, 5:00 PM

Electrospun LiMn2O4 Nanofibers for Highly Selective Lithium Ion Recovery from Brine

HUB 302-#62

The necessity for recovering lithium owes to its significance in industry, namely, pharmaceuticals, batteries, and manufacturing. Current methods of extracting lithium from brine are time and resource intensive. New technologies, specifically, reverse osmosis, magnesium reduction [2], and manganese oxide adsorbent [3], for extracting lithium have gained notoriety in recent years. Using manganese oxide as an adsorbent is of particular interest for its high lithium uptake, inexpensive material cost, and environmentally benign properties [4]. LiMn2O4 is a promising material proven to extract lithium from aqueous environments including brine, sea-water, and wastewater [3]. Nanostructure based materials have shown enhanced extraction and selectivity properties due to the large interface area which allows for higher lithium ion diffusion. Compared to other synthesis methods of synthetic powders or specialized composites, electrospinning is advantageous because it is cost-effective and scalable. Using this principle, we fabricate spinel LiMn2O4 nanofibers due to their innately high surface area as a one-dimensional nanostructure. For enhanced lithium extraction properties, the synthesis of smaller crystallite size and large surface area nanofiber membranes are necessary to maximize lithium extraction and selectivity. Further characterization through Scanning Electron Microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDX), and X-Ray Powder Diffraction (XRD) were used to verify the cubic structure, morphology, and crystallinity of LiMn2O4.