From: Fuel Cell Systems as Power Sources for Sensor Applications Date of download: 9/29/2017 Copyright © ASME. All rights reserved. From: Fuel Cell Systems as Power Sources for Sensor Applications J. Fuel Cell Sci. Technol. 2013;10(4):044501-044501-5. doi:10.1115/1.4024566 Figure Legend: Network-centric operation of sensors enabling larger standoff distance to threats. Individual sensors can be deployed forward with minimized SWaP parameters as SWaP intensive components are in gateway node and slew to cue systems.

From: Fuel Cell Systems as Power Sources for Sensor Applications Date of download: 9/29/2017 Copyright © ASME. All rights reserved. From: Fuel Cell Systems as Power Sources for Sensor Applications J. Fuel Cell Sci. Technol. 2013;10(4):044501-044501-5. doi:10.1115/1.4024566 Figure Legend: Comparison of power capabilities of a DMFC (1 W) versus Li-ion and LiCFx chemistry

From: Fuel Cell Systems as Power Sources for Sensor Applications Date of download: 9/29/2017 Copyright © ASME. All rights reserved. From: Fuel Cell Systems as Power Sources for Sensor Applications J. Fuel Cell Sci. Technol. 2013;10(4):044501-044501-5. doi:10.1115/1.4024566 Figure Legend: DMFC hybridized with a battery to provide 5× power increase. DMFC charges battery and shuts down when battery fully charged. Battery meets increased power requirements until it is depleted, when load is cut off and DMFC recharges battery.

From: Fuel Cell Systems as Power Sources for Sensor Applications Date of download: 9/29/2017 Copyright © ASME. All rights reserved. From: Fuel Cell Systems as Power Sources for Sensor Applications J. Fuel Cell Sci. Technol. 2013;10(4):044501-044501-5. doi:10.1115/1.4024566 Figure Legend: Fuel cell system response to step load increase. When load is increased from 5 to 47 W, fuel cell system requires 100 s to reach new steady state value. System response limited by fuel processing subsystem.

From: Fuel Cell Systems as Power Sources for Sensor Applications Date of download: 9/29/2017 Copyright © ASME. All rights reserved. From: Fuel Cell Systems as Power Sources for Sensor Applications J. Fuel Cell Sci. Technol. 2013;10(4):044501-044501-5. doi:10.1115/1.4024566 Figure Legend: Representative description of a RMFC fuel loop subsystem

From: Fuel Cell Systems as Power Sources for Sensor Applications Date of download: 9/29/2017 Copyright © ASME. All rights reserved. From: Fuel Cell Systems as Power Sources for Sensor Applications J. Fuel Cell Sci. Technol. 2013;10(4):044501-044501-5. doi:10.1115/1.4024566 Figure Legend: RMFC/battery response to step load increase. To maximize lifetime, the FC system is limited to peak load changes >7 s. The use of an external 80 W h battery allows uninterrupted load following by the system.