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Toward biodegradable Mg–air bioelectric batteries composed of silk fibroin–polypyrrole film

Journal Article


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Abstract


  • Biodegradable active implantable devices can be used to diagnose and/or treat disease and eventually disappear without surgical removal. If an “external” energy source is required for effective operation then a biocompatible and biodegradable battery would be ideal. In this study, a partially biodegradable Mg-air bioelectric battery (biobattery) is demonstrated using a silk fibroin-polypyrrole (SF-PPy) film cathode coupled with bioresorbable Mg alloy anode in phosphate buffered saline (PBS) electrolyte. PPy is chemically coated onto one side of the silk substrate. SF-PPy film shows a conductivity of ≈1.1 S cm−1 and a mild catalytic activity toward oxygen reduction. It degrades in a concentrated buffered protease XIV solution, with a weight loss of 82% after 15 d. The assembled Mg-air biobattery exhibits a discharge capacity up to 3.79 mA h cm−2 at a current of 10 μA cm−2 at room temperature, offering a specific energy density of ≈4.70 mW h cm−2. This novel partially biodegradable battery provides another step along the route to biodegradable batteries.

Publication Date


  • 2016

Citation


  • Jia, X., Wang, C., Zhao, C., Ge, Y. & Wallace, G. G. (2016). Toward biodegradable Mg–air bioelectric batteries composed of silk fibroin–polypyrrole film. Advanced Functional Materials, 26 (9), 1454-1462.

Scopus Eid


  • 2-s2.0-84969389450

Ro Full-text Url


  • http://ro.uow.edu.au/context/aiimpapers/article/2907/type/native/viewcontent

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1905

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 1454

End Page


  • 1462

Volume


  • 26

Issue


  • 9

Place Of Publication


  • Germany

Abstract


  • Biodegradable active implantable devices can be used to diagnose and/or treat disease and eventually disappear without surgical removal. If an “external” energy source is required for effective operation then a biocompatible and biodegradable battery would be ideal. In this study, a partially biodegradable Mg-air bioelectric battery (biobattery) is demonstrated using a silk fibroin-polypyrrole (SF-PPy) film cathode coupled with bioresorbable Mg alloy anode in phosphate buffered saline (PBS) electrolyte. PPy is chemically coated onto one side of the silk substrate. SF-PPy film shows a conductivity of ≈1.1 S cm−1 and a mild catalytic activity toward oxygen reduction. It degrades in a concentrated buffered protease XIV solution, with a weight loss of 82% after 15 d. The assembled Mg-air biobattery exhibits a discharge capacity up to 3.79 mA h cm−2 at a current of 10 μA cm−2 at room temperature, offering a specific energy density of ≈4.70 mW h cm−2. This novel partially biodegradable battery provides another step along the route to biodegradable batteries.

Publication Date


  • 2016

Citation


  • Jia, X., Wang, C., Zhao, C., Ge, Y. & Wallace, G. G. (2016). Toward biodegradable Mg–air bioelectric batteries composed of silk fibroin–polypyrrole film. Advanced Functional Materials, 26 (9), 1454-1462.

Scopus Eid


  • 2-s2.0-84969389450

Ro Full-text Url


  • http://ro.uow.edu.au/context/aiimpapers/article/2907/type/native/viewcontent

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/1905

Has Global Citation Frequency


Number Of Pages


  • 8

Start Page


  • 1454

End Page


  • 1462

Volume


  • 26

Issue


  • 9

Place Of Publication


  • Germany