A Century of Discovery

From Potter's 1911 experiments to today's systems, trace the remarkable journey of microbial electrochemistry.

1911discovery

Electricity from Microbial Decomposition

M.C. Potter

Measured a voltage between fermenting cultures of yeast or bacteria and a non-fermenting medium, using platinum electrodes.

Impact: Showed that the breakdown of organic compounds by micro-organisms releases electrical energy
1931breakthrough

Bacterial Half-Cells in Series

Barnett Cohen

Described the bacterial culture as an electrical half-cell and connected several such cells in series.

Impact: Showed that bacterial cells could be combined, like battery cells, to raise the voltage
1999breakthrough

Direct Electrode Reaction of Shewanella

Byung Hong Kim & colleagues

Showed Shewanella putrefaciens is electrochemically active and can transfer electrons to an electrode without an added mediator — later established for Geobacter by Bond & Lovley (2003).

Impact: Pointed to fuel cells that need no added chemical mediator
2003application

Sustained Electricity from a Sugar-Fed MFC

Swades Chaudhuri & Derek Lovley

Showed that Rhodoferax ferrireducens oxidises glucose to CO₂ and transfers the electrons to a graphite electrode with no mediator — a laboratory result, not a deployment.

Impact: Showed that a single organism can turn glucose into current without a mediator
2003breakthrough

Geobacter Genome Sequenced

B. A. Methé, D. R. Lovley & colleagues

Published the complete genome of Geobacter sulfurreducens (Methé et al., Science, 2003), giving the field a genetic map of a model electroactive organism.

Impact: Made targeted genetic studies of extracellular electron transfer possible
2005innovation

Microbial Electrolysis Cells (MECs)

Liu, Grot & Logan (2005); Rozendal et al. (2006), independently

Showed that with an anoxic cathode, a small applied voltage added to the potential from microbial oxidation at the anode is enough to drive hydrogen evolution at the cathode — electrochemically assisted microbial hydrogen production.

Impact: Expanded MES applications beyond electricity to chemical production
2026innovation

Corpus-Scale Modelling of the MES Literature

MESSAI Platform

Structured parameter extraction across the published MES literature, feeding hierarchical Bayesian priors whose predictions carry credible intervals rather than point estimates.

Impact: Lets a design be compared against the published record before it is built