Hierarchically-Structured Bio-Electrocatalyst Materials Design

Akermin proposes, in collaboration with the University of New Mexico, to demonstrate the viability of electronic connections between biomolecules and engineered surfaces in order to harvest power and energy through biologic systems. This work is in part based on Akermin’s proprietary enzyme stabilization technology, which can be used for many lower power commercial and military applications, including microelectrical mechanical devices, unattended ground sensors, and small mobile power devices. This technology has advantages over similar competing technologies (i.e., batteries, conventional fuel cells, and thermal based power supplies) when addressing the needs of small remote sensors and electronics. Akermin’s unique biofuel cell technology has overcome the limitations traditionally associated with enzymatic biofuel cells such as instability at pH’s other than neutral, short operational and shelf lifetimes, and stability relative to temperature changes. The University of New Mexico will contribute their expertise in the design of high surface are engineered electrode materials containing appropriate metal structures for improved electrical connection to biologic molecules. The combination of technologies will result in the highest performing biocathode for highly efficient and long lasting biofuel cell power supplies. BENEFIT: The anticipated benefit of a commercially viable biofuel cell for low power military applications includes being able to provide improved mission operating times due to having greater energy density than incumbent batteries. Additionally, the proposed biofuel cell can be considered an environmentally benign power source, which can be disposed of without concern for environmental contamination. The technology developed under this proposal also has applications in non-military, high volume disposable consumer applications with existing sales volumes of over 100 million units per year. The primary benefit for consumer applications will be the displacement of existing batteries that contain toxic materials with an environmentally benign biofuel cell alternative.