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

Xiaoteng Jia, Caiyun Wang, Vijayaraghavan Ranganathan, Bradley Napier, Changchun Yu, Yunfeng Chao, Maria Forsyth, Fiorenzo G. Omenetto, Douglas R. MacFarlane, Gordon G. Wallace

Research output: Contribution to journalArticleResearch

35 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)831-836
Number of pages6
JournalACS Energy Letters
Volume2
Issue number4
DOIs
Publication statusPublished - 14 Apr 2017

Cite this

Jia, X., Wang, C., Ranganathan, V., Napier, B., Yu, C., Chao, Y., ... Wallace, G. G. (2017). A biodegradable thin-film magnesium primary battery using silk fibroin-ionic liquid polymer electrolyte. ACS Energy Letters, 2(4), 831-836. https://doi.org/10.1021/acsenergylett.7b00012