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Validating Operating Stability and Biocompatibility Toward Safer Zinc-Based Batteries.

Zhexuan Liu1,2, Zhizhao Chen3, Shaorong Lei1

  • 1Department of Plastic Surgery and National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, China.

Advanced Materials (Deerfield Beach, Fla.)
|January 4, 2024
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Summary

This study introduces a novel hydrogel electrolyte for zinc-based batteries (ZBs), enhancing their stability and biocompatibility for wearable electronics. The research validates the safety and performance of these biocompatible ZBs in practical applications.

Keywords:
biocompatibility validationhydrogel electrolyterobust interfacewearable electronicszinc‐based battery

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Area of Science:

  • Materials Science
  • Electrochemistry
  • Biomedical Engineering

Background:

  • Wearable and implantable electronics require reliable and safe power sources.
  • Zinc-based batteries (ZBs) are promising for biocompatible electronics but need validated safety and stability.
  • Harsh operating conditions challenge the development of safe ZBs.

Purpose of the Study:

  • To develop a hydrogel electrolyte for enhanced stability and biocompatibility of ZBs.
  • To validate the biocompatibility and operating stability of ZBs for electronic applications.

Main Methods:

  • Development of a hydrogel electrolyte with moisture-maintaining and robust interface properties.
  • Cytotoxicity evaluation using human cell lines.
  • In vivo assessment of tissue injury via battery implantation in animal models.
  • Implementation of ZBs in preliminary wearable devices.

Main Results:

  • The proposed hydrogel electrolyte creates a milder environment for Zn-MnO2 and Zn-air batteries.
  • Cytotoxicity and tissue injury assessments confirmed the high biocompatibility of the ZBs.
  • Wearable device implementation demonstrated the operating stability of the ZBs.

Conclusions:

  • The developed hydrogel electrolyte offers a viable pathway for creating and validating biocompatible ZBs.
  • This advancement supports the practical application of ZBs in wearable and implantable electronic devices.