High Performance Stretchable Wire Li-Ion Batteries

Vedi Kuyil Azhagan Muniraj, Roger Delattre, Mohamed Saadaoui, Cyril Calmes, Andrey Petrovitch Kurbatov, Olzhas Kaupbay, Fyodor Malchik, Thierry Djenizian

Research output: Contribution to journalArticlepeer-review

Abstract

The development of integrated micro-power sources is mainly driven by innovative investigations in materials chemistry, battery designs, and microfabrication processes. Here, a new technique is described for the development of coaxial wire-shaped Li-ion batteries by successfully adopting the unidirectional helical winding method starting from a twisted Cu fabric. Such a coaxial wire battery is examined by scanning electron microscopy and characterized by electrochemical techniques. These investigations reveal that the proposed approach is definitely suitable for achieving wire batteries showing high energy storage capacity while being highly flexible and stretchable without compromising the whole electrochemical performance even under mechanical deformations. The full cell based on the Li4Ti5O12/LiCoO2 system delivers an outstanding linear capacity of 137 µAh cm−1 at a 0.1C rate with nearly 100% coulombic efficiency and is further capable of being operated at various kinetics. It is also shown that such a coaxial wire battery can be used to power different electronic devices, which is of significance for the development of autonomous wearable applications like electronic textiles.

Original languageEnglish
JournalAdvanced Materials Technologies
DOIs
StateAccepted/In press - 2024
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2024 The Authors. Advanced Materials Technologies published by Wiley-VCH GmbH.

Keywords

  • coaxial-winding
  • stretchable Li-ion battery
  • textile electronic
  • twisted fabric
  • wire battery

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