Multi-part nontoxic printed batteries
A battery-powered analyte sensing system includes a printed battery and an analyte sensor. The printed battery includes an anode composed of a non-toxic biocompatible metal, a first carbon-based current collector in electrical contact with the anode, a three-dimensional hierarchical mesoporous carbon-based cathode, a second carbon-based current collector, and an electrolyte layer disposed between the anode and the cathode, the electrolyte layer configured to activate the printed battery when the electrolyte is released into one or both the anode and the cathode. The analyte sensor includes a sensing material and a reactive chemistry additive in the sensing material.
1. A battery-powered analyte sensing system comprising:
a printed battery comprising:
an anode composed of a non-toxic biocompatible metal;
a first carbon-based current collector in electrical contact with the anode;
a three-dimensional hierarchical mesoporous carbon-based cathode;
a second carbon-based current collector; and
an electrolyte layer disposed between the anode and the cathode, the electrolyte layer configured to activate the printed battery when the electrolyte is released into one or both the anode and the cathode; and
an analyte sensor comprising:
a sensing material; and
a reactive chemistry additive in the sensing material.
2. The battery-powered analyte sensing system of claim 1 , wherein the non-toxic biocompatible metal includes one or more of Zn, Mg, or Al, and is configured to yield a cell voltage between approximately 1.5 volts and 3 volts.
3. The battery-powered analyte sensing system of claim 1 , wherein the battery-powered analyte sensing system is configured to transform oxygen into water by exposing the oxygen to ambient air.
4. The battery-powered analyte sensing system of claim 1 , wherein the electrolyte layer is configured to release into one or both the anode and the cathode in response to one or more of a pressure-activated rupture of the electrolyte layer or exposure of a hygroscopic compound to solid salts contained within the anode.
5. The battery-powered analyte sensing system of claim 1 , wherein one or both the anode and the cathode comprise a three-dimensional scaffolded mesoporous carbon-based material.
6. The battery-powered analyte sensing system of claim 5 , wherein the scaffolded mesoporous carbon-based material further comprises a plurality of electrically conductive three-dimensional aggregates formed of graphene sheets.
7. The battery-powered analyte sensing system of claim 6 , wherein the three-dimensional aggregates form an open porous scaffold configured to provide electrically conductive paths between contact points of the graphene sheets.
8. The battery-powered analyte sensing system of claim 1 , wherein the electrolyte layer is configured to be released based on an application of pressure to one or both the anode and cathode.
9. The battery-powered analyte sensing system of claim 1 , wherein the battery-powered analyte sensing system is fabricated by one or more of three-dimensional printing or additive manufacturing techniques.
10. The battery-powered analyte sensing system of claim 1 , wherein one or both the anode and cathode are three-dimensionally printed onto at least a portion of a container comprising one or more of card stock, cardboard, paper, or polymer-coated paper.