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Open AccessCommunication
J. Low Power Electron. Appl. 2018, 8(4), 45; https://doi.org/10.3390/jlpea8040045

Including Liquid Metal into Porous Elastomeric Films for Flexible and Enzyme-Free Glucose Fuel Cells: A Preliminary Evaluation

1
Istituto Italiano di Tecnologia (IIT), Center for Biomolecular Nanotechnologies, Via Barsanti, 73010 Arnesano, Italy
2
Dipartimento di Ingegneria dell’Innovazione, Università del Salento, 73100 Lecce, Italy
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Received: 18 October 2018 / Revised: 8 November 2018 / Accepted: 14 November 2018 / Published: 22 November 2018
(This article belongs to the Special Issue Flexible Electronics and Self-Powered Systems)
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Abstract

This communication introduces a new flexible elastomeric composite film, which can directly convert the chemical energy of glucose into electricity. The fabrication process is simple, and no specific equipment is required. Notably, the liquid metal Galinstan is exploited with a two-fold objective: (i) Galinstan particles are mixed with polydimethylsiloxane to obtain a highly conductive porous thick film scaffold; (ii) the presence of Galinstan in the composite film enables the direct growth of highly catalytic gold structures. As a first proof of concept, we demonstrate that when immersed in a 20 mM glucose solution, a 5 mm-long, 5 mm-wide and 2 mm-thick sample can generate a volumetric power density up to 3.6 mW·cm 3 at 7 mA·cm 3 and 0.51 V without using any enzymes. View Full-Text
Keywords: Galinstan; liquid metal; porous gold; glucose fuel cell; enzyme-free Galinstan; liquid metal; porous gold; glucose fuel cell; enzyme-free
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Desmaële, D.; La Malfa, F.; Rizzi, F.; Qualtieri, A.; De Vittorio, M. Including Liquid Metal into Porous Elastomeric Films for Flexible and Enzyme-Free Glucose Fuel Cells: A Preliminary Evaluation. J. Low Power Electron. Appl. 2018, 8, 45.

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