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A biodegradable thin-film magnesium primary battery using silk fibroin-ionic liquid polymer electrolyte

journal contribution
posted on 01.04.2017, 00:00 authored by X Jia, C Wang, V Ranganathan, B Napier, C Yu, Y Chao, Maria ForsythMaria Forsyth, F G Omenetto, D R MacFarlane, G G Wallace
Transient implantable medical bionics offer great
promise in the field of smart controlled release and tissue
regeneration. On-board energy storage is the ideal power system to
drive them. In this work, a critical component of such a device, a
biodegradable polymer electrolyte (silk fibroin−choline nitrate) has
been developed. The efficiency of this electrolyte is demonstrated
when deployed in a biodegradable thin-film magnesium battery. The
battery, encapsulated in silk, offers a specific capacity of 0.06 mAh cm−2.
The enzymatic degradation of the whole device occurs over 45 days
in the buffered protease XIV solution. A programmed battery lifetime
can be achieved using silk protection layers. This battery system
provides a new avenue for an on-board biodegradable power source
for next-generation transient medical bionics.

History

Journal

ACS energy letters

Volume

2

Issue

4

Pagination

831 - 836

Publisher

American Chemical Society

Location

Washington, D.C.

ISSN

2380-8195

Language

eng

Publication classification

C1 Refereed article in a scholarly journal; C Journal article

Copyright notice

2017, American Chemical Society