Jump to main content
Jump to site search


Soft, stretchable, high power density electronic skin-based biofuel cells for scavenging energy from human sweat

Author affiliations

Abstract

This article describes the fabrication, characterization, and real-life application of a soft, stretchable electronic-skin-based biofuel cell (E-BFC) that exhibits an open circuit voltage of 0.5 V and a power density of nearly 1.2 mW cm−2 at 0.2 V, representing the highest power density recorded by a wearable biofuel cell to date. High power density is achieved via a unique combination of lithographically-patterned stretchable electronic framework together with screen-printed, densely-packed three-dimensional carbon-nanotube-based bioanode and cathode array arranged in a stretchable “island-bridge” configuration. The E-BFC maintains its performance even under repeated strains of 50%, and is stable for two days. When applied directly to the skin of human subjects, the E-BFC generates ∼1 mW during exercise. The E-BFC is able to power conventional electronic devices, such as a light emitting diode and a Bluetooth Low Energy (BLE) radio. This is the first example of powering a BLE radio by a wearable biofuel cell. Successful generation of high power density under practical conditions and powering of conventional energy-intense electronic devices represents a major step forward in the field of soft, stretchable, wearable energy harvesting devices.

Graphical abstract: Soft, stretchable, high power density electronic skin-based biofuel cells for scavenging energy from human sweat

Back to tab navigation

Supplementary files

Publication details

The article was received on 29 Mar 2017, accepted on 15 Jun 2017 and first published on 15 Jun 2017


Article type: Communication
DOI: 10.1039/C7EE00865A
Citation: Energy Environ. Sci., 2017, Advance Article
  •   Request permissions

    Soft, stretchable, high power density electronic skin-based biofuel cells for scavenging energy from human sweat

    A. J. Bandodkar, J. You, N. Kim, Y. Gu, R. Kumar, A. M. V. Mohan, J. Kurniawan, S. Imani, T. Nakagawa, B. Parish, M. Parthasarathy, P. P. Mercier, S. Xu and J. Wang, Energy Environ. Sci., 2017, Advance Article , DOI: 10.1039/C7EE00865A

Search articles by author

Spotlight

Advertisements