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Structured-Liquid Batteries.

Jiajun Yan1,2, Michael A Baird3, Derek C Popple3,4

  • 1Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.

Journal of the American Chemical Society
|February 23, 2022
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Summary
This summary is machine-generated.

Researchers developed novel structured-liquid batteries using redox-active molecules in multiphasic devices. These rechargeable batteries store and release chemical energy on demand, powering external circuits for advanced applications.

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Soft Robotics

Background:

  • Maintaining chemical systems far from equilibrium requires controlling reactive species within microenvironments.
  • A key challenge lies in managing stored chemical energy for on-demand work utilization.

Purpose of the Study:

  • To demonstrate a novel method for storing and discharging chemical energy using structured-liquid devices.
  • To develop rechargeable batteries capable of powering external circuits.

Main Methods:

  • Utilizing redox-active molecules compartmentalized within multiphasic structured-liquid devices.
  • Employing charge-complementary polyelectrolytes to form an ionically conductive coacervate membrane at the liquid-liquid interface.
  • Mitigating active-material crossover through ion pairing between polyelectrolytes and active materials.

Main Results:

  • Structured-liquid batteries were successfully charged and discharged to power a load on an external circuit.
  • The coacervate membrane provided structural support and prevented active-material crossover.
  • The developed batteries demonstrated rechargeability over hundreds of hours.

Conclusions:

  • Multiphasic structured-liquid devices offer a promising platform for on-demand chemical energy utilization.
  • These devices can be integrated with soft electronics for applications in smart textiles, medical implants, and wearables.