7. printed, stretchable zinc-silver batteries for wearable electronics

Department: NanoEngineering
Research Institute Affiliation: Agile Center for Wearable Sensors (CWS)
Faculty Advisor(s): Joseph Wang | Ying Meng

Primary Student
Name: Rajan Kumar
Email: rak010@ucsd.edu
Phone: 845-842-8185
Grad Year: 2019

Student Collaborators
Lin Yin, luyin@ucsd.edu

Abstract
While several stretchable batteries utilizing either deterministic or random composite architectures have been described, none have been fabricated using inexpensive printing technologies. Here we printed a highly stretchable Zn-Ag2O battery by incorporating polystyrene-block-polyisoprene-block-polystyrene (SIS) as a hyperelastic binder for custom-made printable inks. The remarkable mechanical properties of the SIS binder lead to an all-printed, stretchable Zn-Ag2O rechargeable battery with a ~2.5 mAh cm-2 reversible capacity density even after multiple iterations of 100% stretching. This battery offers the highest reversible capacity and discharge current density for intrinsically stretchable batteries reported to date. The electrochemical and mechanical properties are characterized under different strain conditions. The new stress-enduring printable inks pave ways for further developing printable, stretchable electronics for the wide range of wearable applications.

Industry Application Area(s)
Electronics/Photonics | Energy/Clean technology | Materials

Related Links:

  1. http://onlinelibrary.wiley.com/doi/10.1002/aenm.201602096/abstract

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