Dow Energy Materials showcases current Li-ion cathode, anode and electrolyte systems at EVS26; layered-layered NMC cathode and Si anode materials under development
8 May 2012
|Dow coated NMC cathode materials. Click to enlarge.|
Dow Energy Materials (DEM), a business unit of The Dow Chemical Company formed in 2010 to focus on the development of advanced battery systems (cathode, anode, electrolyte) presented a poster on its current coated graphite anode and coated NMC cathode and a second poster on its high voltage ethylmethoxyethyl sulfone electrolyte at the 26th International Electric Vehicle Symposium (EVS26) in Los Angeles.
In addition to the NMC cathode materials, DEM is also providing phosphate cathode materials, said David Kalnecky, Global Business Director, Dow Energy Materials.
Dow Energy Materials uses a proprietary coating process for their anode and cathode materials that, when used in combination, provide greater lifetime (up to 2x over conventional uncoated systems), higher energy density, improved safety and a faster charging rate. Through Dow Energy Materials’ joint venture with Ube Industries, Advanced Electrolyte Technologies, the company offers functional electrolytes. (Earlier post.)
Next-generation. The coated NMC and graphite materials are current products—what DEM calls Horizon 1, said Dr. Alan Nelson, DEM R&D Director. For Horizon 2 products, DEM is working on layered-layered NMC cathode materials as well as silicon-based anodes. DEM is not a direct licensee of the Argonne National Laboratory layered-layered materials, noted Klanecky, but can work with cell manufacturers who are. In addition, DEM has its own research efforts ongoing. On the silicon anode side, DEM is exploring a variety of approaches, Nelson said, but is not yet ready to announce.
DEM expects to deliver these next-generation materials with cathode capacities in the range of 280 - 300 mAh g-1 and anode capacities in the range of 1,000 - 1,500 mAh g-1, Nelson and Klanecky said.
Much further out (Horizon 3) are efforts on Lithium-air batteries and other potential chemistries.
One-third of the cost of an electric vehicle is the battery itself. We are focused on developing technologies that provide higher performance while reducing battery cell cost, and ultimately the cost of EVs.—David Klanecky
DEM is distinct from Dow’s battery manufacturing JV Dow Kokam; DEM will supply materials to any battery manufacturer.
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