Micro Photosynthetic Power Cells may be the Green Energy Source for the Next Generation

Anatomy of micro photosynthetic cell. (a)Main components of micro PSC; (b unassembled micro PSC model; (c) assembled proposed micro PSC model; (d) schematic of micro PSC tested; (e) schematic of experimental set up; and (f) experimental measurement set up.

A team of researchers from the Optical Bio Microsystem lab at Concordia University in Montreal, Canada, have invented and developed micro-photosynthetic cell technology that can harness electrical power from the photosynthesis and respiration of blue-green algae. This novel, scalable technology enables economical ways of generating clean energy, and may be the superlative, carbon-free power source for the future of mankind.

The team headed by Dr. Muthukumaran Packirisamy, research Chair of the Optical Bio Microsystem lab at Concordia, has conceived and developed such a contraption. The report is featured in the September 2015 issue of the journal TECHNOLOGY.

Clean and green carbon-free energy is globally anticipated as the potential soltution for the mitigation and eventual erasure of global warming. The main source of clean energy comes from the sun, which emits more energy to the earth every hour than mankind depletes in one year. Hence, technologies that derive energy from the sun are instrumental to the worldwide conversion of power sources to eco-friendly auxiliaries. This constitutes a large part of the incentive for the team of researchers at Concordia University, who have come up with an effective method for harnessing photosynthetic power from algae.

Both photosynthesis and respiration, which take place in plants cells, involve electron transfer chains. The main concept herein involves trapping these electrons that are released by blue-green algae. The electron transfer chains of photosynthesis and respiration are constructive in harnessing the electrical energy from blue-green algae. This photosynthetic power cell consists of an anode, cathode and proton exchange membrane. The anode chamber consists of cyanobacteria and it releases electrons to the electrode surface from a redox agent that is present at the cathode. An external load is connected to extract the electrons. The fabricated cell could produce an open circuit voltage of 993mV and a power density of 36.23W/cm2. The more detailed report is available in the journal TECHNOLOGY. The performance of the power cell can be increased by reducing the electrode spacing between the two electrodes of proton exchange membrane and efficient design of the cell.

These micro photosynthetic power cells may entail significant military and wireless applications.

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