FINAL REPORT: Transformational electrode drying process

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This report includes major findings and outlook from the transformational electrode drying project performance period from January 6, 2012 to August 1, 2012. Electrode drying before cell assembly is an operational bottleneck in battery manufacturing due to long drying times and batch processing. Water taken up during shipment and other manufacturing steps needs to be removed before final battery assembly. Conventional vacuum ovens are limited in drying speed due to a temperature threshold needed to avoid damaging polymer components in the composite electrode. Roll to roll operation and alternative treatments can increase the water desorption and removal rate without overheating ... continued below

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Claus Daniel, C. & Wixom, M. (A123 Systems, Inc.) December 19, 2013.

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  • Oak Ridge National Laboratory
    Publisher Info: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
    Place of Publication: Oak Ridge, Tennessee

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Description

This report includes major findings and outlook from the transformational electrode drying project performance period from January 6, 2012 to August 1, 2012. Electrode drying before cell assembly is an operational bottleneck in battery manufacturing due to long drying times and batch processing. Water taken up during shipment and other manufacturing steps needs to be removed before final battery assembly. Conventional vacuum ovens are limited in drying speed due to a temperature threshold needed to avoid damaging polymer components in the composite electrode. Roll to roll operation and alternative treatments can increase the water desorption and removal rate without overheating and damaging other components in the composite electrode, thus considerably reducing drying time and energy use. The objective of this project was the development of an electrode drying procedure, and the demonstration of processes with no decrease in battery performance. The benchmark for all drying data was an 80°C vacuum furnace treatment with a residence time of 18 – 22 hours. This report demonstrates an alternative roll to roll drying process with a 500-fold improvement in drying time down to 2 minutes and consumption of only 30% of the energy compared to vacuum furnace treatment.

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  • Report No.: ORNL/TM-2012/617
  • Grant Number: DE-AC05-00OR22725
  • DOI: 10.2172/1060885 | External Link
  • Office of Scientific & Technical Information Report Number: 1060885
  • Archival Resource Key: ark:/67531/metadc837757

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  • December 19, 2013

Added to The UNT Digital Library

  • May 19, 2016, 9:45 a.m.

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  • July 22, 2016, 7:34 p.m.

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Claus Daniel, C. & Wixom, M. (A123 Systems, Inc.). FINAL REPORT: Transformational electrode drying process, report, December 19, 2013; Oak Ridge, Tennessee. (digital.library.unt.edu/ark:/67531/metadc837757/: accessed September 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.