An Intrinsically Self-Healing NiCo||Zn Rechargeable Battery with a Self-Healable Ferric-Ion-Crosslinking Sodium Polyacrylate Hydrogel Electrolyte.

Published

Journal Article

Self-healing solid-state aqueous rechargeable NiCo||Zn batteries are inherently safe and have a high energy density and mechanical robustness. However, the self-healability of solid-state batteries has only been realized by a few studies in which electron/ion-inactive self-healable substrates are utilized. This arises from the lack of self-healable electrolytes. Now an intrinsically self-healing battery has been designed that utilizes a new electrolyte that is intrinsically self-healable. Sodium polyacrylate hydrogel chains are crosslinked by ferric ions to promote dynamic reconstruction of an integral network. These non-covalent crosslinkers can form ionic bonds to reconnect damaged surfaces when the hydrogel is cut off, providing an ultimate solution to the intrinsic self-healability problem of batteries. As a result, this NiCo||Zn battery with this hydrogel electrolyte can be autonomically self-healed with over 87 % of capacity retained after 4 cycles of breaking/healing.

Full Text

Duke Authors

Cited Authors

  • Huang, Y; Liu, J; Wang, J; Hu, M; Mo, F; Liang, G; Zhi, C

Published Date

  • July 5, 2018

Published In

Volume / Issue

  • 57 / 31

Start / End Page

  • 9810 - 9813

PubMed ID

  • 29905394

Pubmed Central ID

  • 29905394

Electronic International Standard Serial Number (EISSN)

  • 1521-3773

International Standard Serial Number (ISSN)

  • 1433-7851

Digital Object Identifier (DOI)

  • 10.1002/anie.201805618

Language

  • eng