Binghamton University Team Develops Bacteria-Powered Biobattery

Researchers created a new biobattery design inspired by the structure of human intestinal villi.

Updated on Oct. 31, 2026 in Life Sciences

Close-up of a biobattery electrode with uniform, finger-like vertical pillars covered in translucent gel, designed to mimic biological tissue. — Binghamton University researchers developed a high-efficiency biobattery using an intestine-inspired pillar design to improve bacterial nutrient delivery and energy output. AI Illustration. Upload story photo >

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Binghamton University researchers have developed a bacteria-powered biobattery using intestine-inspired pillars to boost energy output. The device utilizes Bacillus subtilis spores embedded in a hydrogel material to achieve significantly higher efficiency than traditional flat designs.

Why it matters

The design addresses limitations in previous biobatteries where flat electrodes restricted surface area and suffered from biofilm clogging. By mimicking human intestinal villi, the system improves mass transport and nutrient delivery, allowing for more consistent energy production.

The biobattery uses a hydrogel-covered anode made of polyvinyl alcohol, PEDOT, and reduced graphene oxide. After testing 24 configurations of pillar heights and radii, the system maintained approximately 0.75 volts for 14 hours of operation.

The players

Binghamton University

This public research university located in New York serves as the site where the biobattery research was developed.

The details

The system employs finger-like pillars as an anode to provide increased surface area for bacteria while an ion-exchange membrane separates the anode from the cathode. These structures effectively facilitate the delivery of nutrients to the embedded spores, outperforming standard flat designs by a factor of 8.3.

The research findings were published on October 31, 2026.

The Big Picture

This development follows the trajectory of Binghamton University's sustainable energy research initiatives to improve microbial fuel cell efficiency. It shifts the field toward bio-inspired designs that overcome legacy issues like biofilm clogging that have historically plagued flat-electrode battery models.

The improvement in power density suggests future potential for bio-based power sources to support low-energy electronics or biosensors. While currently experimental, this bio-inspired architecture could eventually lead to sustainable, biodegradable power modules for consumer tech.

The takeaway

This research demonstrates that complex biological architectures can be replicated through synthetic hydrogel materials to improve industrial efficiency. Future efforts will focus on refining the physiological environment within the device and optimizing production scalability.