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LIQUID ACTIVATED DEVICES POWERED BY HYDROGEL BATTERIES AND METHODS THEREFORE

  • US 20150303489A1
  • Filed: 11/07/2012
  • Published: 10/22/2015
  • Est. Priority Date: 11/07/2012
  • Status: Active Application
First Claim
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1. A liquid detection device comprising:

  • at least one liquid-activated hydrogel battery configured to generate an electric current responsive to contact with a liquid, the at least one liquid-activated hydrogel battery comprising;

    at least one hydrogel comprising at least one hydrophilic polymer and at least one electrolyte; and

    at least one anode and at least one cathode in contact with the at least one hydrogel;

    wherein the at least one electrolyte supports ionic communication between the at least one anode and the at least one cathode responsive to the hydrogel being hydrated with the liquid and does not support the ionic communication responsive to the hydrogel being dehydrated by an effective absence of the liquid, the ionic communication generating an electric current for the at least one liquid-activated hydrogel battery; and

    at least one circuit in operative communication with the at least one liquid-activated hydrogel battery and configured to be energized by the electric current, wherein a detection event is initiated responsive to the at least one circuit being energized.

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