Advanced Battery Development

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Advanced Battery Development ( advanced-battery-development )

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III.A.5 Development of a High-Performance PHEV Battery Pack Groshek – USABC, Alamgir – LG Chem Conclusions and Future Directions While the Mn-rich cathode has the potential of delivering very high specific energy, several key drawbacks need to be mitigated to make it a long-life, low-cost cathode. Various approaches we have studied show that there are considerable opportunities to improve the cathode material properties. Extensive test data involving analytical studies have clearly established the usefulness of our approaches toward improving the performance and life of the cells. However, none of the methods we have investigated thus far was able to fully alleviate the key challenges of Mn dissolution, gassing and voltage sagging, which leads to poor life. Multiple design iterations have led to the development of a pack using an indirect cooling method comprising a refrigerant-to-cold plate system. These packs have been built and delivered to the USABC for testing by the National Labs. FY 2013 Publications/Presentations Figure III - 19: Top: Schematic of the PHEV-40 mile pack we have developed. The thermal chamber containing elements such as the compressor, the cold-plate and the evaporator is on the right while the electrical chamber is on the left; Bottom: picture of the finished pack as delivered to the National Labs Energy Storage R&D 48 FY 2013 Annual Progress Report 1. Presentation at the 2013 DOE Annual Peer Review Meeting, Washington, DC, May 2013.

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