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All‐Printed, Stretchable Zn‐Ag 2 O Rechargeable Battery via Hyperelastic Binder for Self‐Powering Wearable Electronics
Author(s) -
Kumar Rajan,
Shin Jaewook,
Yin Lu,
You JungMin,
Meng Ying Shirley,
Wang Joseph
Publication year - 2017
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201602096
Subject(s) - materials science , stretchable electronics , battery (electricity) , hyperelastic material , wearable technology , flexible electronics , nanotechnology , polystyrene , electronics , printed electronics , composite material , wearable computer , electrical engineering , inkwell , computer science , polymer , power (physics) , physics , quantum mechanics , nonlinear system , embedded system , engineering
While several stretchable batteries utilizing either deterministic or random composite architectures have been described, none have been fabricated using inexpensive printing technologies. In this study, the authors printed a highly stretchable, zinc‐silver oxide (Zn‐Ag 2 O) 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‐Ag 2 O rechargeable battery with a ≈2.5 mA h 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 stretchable electronics for the wide range of wearable applications.