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USA: Lithium Battery Power 2012 December 4-5- Las Vegas, NV

Rachid Yazami, PhD, Nanyang Technological University, Singapore, “A New Concept of Lithium Air Battery with Anode and Cathode in Liquid State”
Current lithium-air battery research mostly focuses on solid state anode materials including metallic lithium and lithium metal alloys. In this work we have developed a new type of liquid anode where the alkali metal is dissolved to form a solvated electron solution (SES). The advantage of liquid anode is the fast ion transport and stable anode/ceramic membrane electrolyte interface. Moreover, battery system based on anode and cathode both in the liquid state is an ultra-fast”charge” owing to easy refilling the anode and cathode tanks with fresh solutions besides electric charging. A laboratory cell consisting of a liquid anode of Li-SES and liquid cathode open to the ambient air atmosphere will be demonstrated. It rates an OCV close to 3V operating at the ambient temperature. Our typical Li-SES comprises a polyaromatic hydrocarbon such naphtalene or bi-phenyl, an organic solvent such THF, which enables lithium to be dissolved. We will also discuss the “phase diagram” of Li-biphenyl-THF system relating to electrical conductivity, as well as the physical-chemical characteristics of Li-SES together with their potential application as the new anode material in lithium-air and lithium-seawater cells.

Recent significant innovations within lithium-ion batteries have propelled the technology into a position in the marketplace far exceeding recent market survey results. Breakthroughs in new battery chemistries, novel electrode and electrolyte materials, system integration for a vast array of mobile and portable applications, from micro medical devices to high-energy/high-power automotive, have paved the roadmap for an emerging market with unlimited potential.

New chemistries & materials to increase energy & decrease cost
Meeting the EV challenge: cycle life, power & energy, cost and safety
Advanced materials for improved electrode & electrolyte performance
Application driven lithium ion battery development
Advanced technology for greater safety, reliability and performance
From novel materials and components to systems design and integration
Role of nanotechnology in improving power and energy density

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