University of Pittsburgh

Bharat Gattu

Prashant Nagesh Kumta

Prashanth Jampani Hanumantha

Pavithra Murugavel Shanthi

Moni Kanchan Datta

Oleg Velikokhatnyi

Wei Wang

Prashanth J Hanumantha

Prashanth Hanumantha Jampani

The invention relates to lithium-based battery systems and, more particularly, to electro-spinable solution compositions, electro-spun sulfur-polymer fibers, e.g., wires and yarns, and their use in preparing high performance sulfur mattes, e.g., electrodes, for lithium-sulfur batteries with potential applications in small-scale mobile devices. The sulfur-polymer fibers have nanoscale dimensions and yarn-like morphology. The sulfur-polymer fibers can be prepared by co-dissolving sulfur and polymer in a solvent for forming the electro-spinable solution, and electrospinning the solution. The electrospun fibers can be used to form a composite that includes alternating layers of the electrospun fibers and polymer on a current collector.

Electro-spun sulfur wire for fabricating mattes of lithium sulfur batteries

The invention, relates to flexible, thin trim batteries for use in a variety of applications including, but not limited to, flexible electronics, flexible energy storage systems, wearable textile-like energy devices and various other integrated electronic and mobile device-based applications. The flexible, thin, film batteries allow the design and development of weavable, conformable, wearable and flexible components for advanced battery technology. The invention relates to flexible energy storage system that include an electrospun, textile-like, weaved assembly including a flexible cathode, a flexible anode, and an electrolyte. The electrolyte can include a flexible gel-polymer and a nanostractured filler.

Weavable, conformable, wearable and flexible components for advanced battery technology

The invention relates to lithium ion batteries and, more particularly, to lithium ion conducting composite polymer electrolyte separators. The separators include a nanofiber mat composed of electrospun nanofibers. The nanofibers include a polymer having one or more polar halogen groups, a lithium-containing solid or liquid electrolyte and nanoparticle filler. The polymer, electrolyte and filler are combined to form a solution that is subjected to the electro-spinning process to produce electrospun nanofibers in the form of the mat.

Electrospinning of PVdF-HFP: novel composite polymer electrolytes (CPES) with enhanced ionic conductivities for lithium-sulfur batteries

The invention relates to composite multilayer lithium ion battery anodes that include a porous metal alloy foam, and a lithium ion conductor coating applied to the metal alloy foam. The metal alloy foam can include structurally isomorphous alloys of lithium and, optionally, lithium and magnesium. The lithium ion conductor coating can include ternary lithium silicate, such as, lithium orthosilicate. Lithium ions from the ternary lithium silicate may be deposited within the pores of the metal alloy foam. Optionally, the lithium ion conductor coating may include a dopant. The dopant can include one or more of magnesium, calcium, vanadium, niobium and fluorine, and mixtures and combinations thereof.

High capacity, air-stable, structurally isomorphous lithium alloy multilayer porous foams

The present invention relates to compositions including nano-particles and a nano-structured support matrix, methods of their preparation and applications thereof. The compositions of the present invention are particularly suitable for use as anode material for lithium-ion rechargeable batteries. The nano-structured support matrix can include nanotubes, nanowires, nanorods, and mixtures thereof. The composition can further include a substrate on which the nano-structured support matrix is formed. The substrate can include a current collector material.

Compositions including nano-particles and a nano-structured support matrix and methods of preparation as reversible high capacity anodes in energy storage systems

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Pittsburgh, PA, United States of America

Bharat Gattu