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ORNL, Solid Power sign exclusive license for lithium-sulfur battery technology

The Department of Energy’s Oak Ridge National Laboratory and Solid Power Inc. of Louisville, Colo., have an exclusive agreement licensing lithium-sulfur materials for next-generation batteries.

Solid Power licensed a portfolio of ORNL patents relating to lithium-sulfur compositions that will enable development of more energy-dense batteries. ORNL’s proof-of-concept battery research has demonstrated the technology’s potential to improve power, operating temperature, manufacturability and cost as well.

The technology was developed by a team of current and former ORNL researchers including Chengdu Liang, Nancy Dudney, Adam Rondinone, Jong Keum, Jane Howe, Wujun Fu, Ezhiylmurugan Rangasamy, Zhan Lin and Zengcai Liu. The license was negotiated by ORNL commercialization manager Eugene Cochran.

Among their extensive work on Lithium-sulfur, in 2013, members of the Oak Ridge team designed and tested an all-solid lithium-sulfur battery with approximately four times the energy density of conventional lithium-ion technologies. The ORNL battery design also addressed flammability concerns experienced by other chemistries. (Earlier post.)

The battery was built with a new Oak Ridge-designed sulfur-rich cathode and a lithium anode with a solid electrolyte material, also developed at ORNL.

The technology licensed to Solid Power includes a method of forming lithium-containing electrolytes using wet chemical synthesis. In some examples, the lithium-containing electrolytes are composed of β-Li3PS4 or Li4P2S7. The solid electrolyte may be a core shell material. In one embodiment, the core shell material includes a core of lithium sulfide (Li2S), a first shell of β-Li3PS4 or Li4P2S7, and a second shell including one of β-Li3PS4 or Li4P2S7 and carbon. The lithium containing electrolytes may be incorporated into wet cell batteries or solid state batteries.

The mission of Solid Power is to develop next-generation energy storage devices for the rechargeable battery market, which is dominated by lithium-ion technologies. The current annual rechargeable battery market is estimated at $12 billion and is anticipated to grow to $20 billion by 2020 to meet demands in consumer electronics, electric vehicles and military, aerospace and industrial applications.

The ORNL technology will aid Solid Power in the development of solid-state rechargeable batteries that can provide two to three times the energy of conventional lithium ion technologies. Because all-solid batteries lack any volatile or flammable liquid components, they hold potential to save costs by eliminating many of the expensive safety features typically associated with lithium-ion systems.

Solid Power plans to bring the technology to market using a simple battery cell architecture that leverages industry standard manufacturing processes. The company recently constructed a 700-square-foot dry room facility with roll-to-roll processing capabilities that will translate to production scale. This capacity will allow the first large-scale prototypes to begin production before year’s end and to continue in 2016.

ORNL and UT-Battelle work closely with licensees to ensure successful commercialization of licensed technologies.

ORNL research and development on the lithium-sulfur materials was supported by DOE’s Office of Science and the Vehicle Technologies Office in DOE’s Office of Energy Efficiency and Renewable Energy. Materials synthesis and characterization were conducted in part at ORNL’s Center for Nanophase Materials Sciences, a DOE Office of Science User Facility.

Comments

HarveyD

Saver solid state batteries with two to three times current batteries energy density could turn many existing BEVs close to extended range units.

Hope that many major battery manufacturers will develop similar lower cost higher energy density batteres by 2020?

SJC

"..four times the energy density of conventional lithium-ion technologies.."

There are several methods, this is one.

HarveyD

Solid state 3X to 4X batteries may be what is required for future (2017?) second generation extended range BEVs?

Wonder what Toyota's efforts have given so far?

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