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Vibration Robustness of Electrodes for Automotive Applications

R. Shaw Lynds, NATTBatt, 2015

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Vibration Robustness of Electrodes

Maxwell has invested great effort in extending the working envelop of UCAP cells. During this investigation we have found some inherent ways that our dry process electrode preforms better then wet coated electrode under vibration testing. We believe that these results would hold true not only for UCAPS but also batteries made with the dry process.

R. Shaw Lynds, NATTBatt, 2015

Vibration testing of cells ISO 16750 Table 12 for truck chassis mounted electronics

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Vibration Robustness of Electrodes

Dry Process Wet Coated #1 Wet Coated #2 Wet Coated #3

15 day soak

10 min shake

Post-vibration

Maxwell has observed high ESR increases in UCAPS with wet coated electrodes after vibration testing• Process: binder breakdown => loose carbon,

higher ESR• Electrode level tests: 15 day soak in ACN or 10 min

shake on mixer while folded and soaked in ACN Pre-vibration

R. Shaw Lynds, NATTBatt, 2015

Wet coated cells