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Current issue

ELEKTRO 1/2019 was released on January 16th 2019. Its digital version will be available on February 12th 2019.

Topic: Electrotechnology; Materials for electrical engineering; Wiring material

Main Article
Electrically conductive adhesives for electrical engineering
Smart Cities (part 6)

SVĚTLO (Light) 6/2018 was released on December 3rd 2018. Its digital version will be available on January 4th 2019.

Luminaires and light apparatuses
Modular floodlights Siteco
Decorative luminaire PRESBETON H-E-X from the integral series town equipment
LED luminaires ESALITE – revolution in sphere of industrial lighting

Daylight
About median illumination by daylight
Professional colloquium Daylight in practice

Cotton-based hybrid biofuel cell could power implantable medical devices

16.11.2018 | Phys.org | www.phys.org

A glucose-powered biofuel cell that uses electrodes made from cotton fiber could someday help power implantable medical devices such as pacemakers and sensors. The new fuel cell, which provides twice as much power as conventional biofuel cells, could be paired with batteries or supercapacitors to provide a hybrid power source for the medical devices.

Researchers at the Georgia Institute of Technology and Korea University used gold nanoparticles assembled on the cotton to create high-conductivity electrodes that helped improve the fuel cell's efficiency. That allowed them to address one of the major challenges limiting the performance of biofuel cells—connecting the enzyme used to oxidize glucose with an electrode.

Biofuell cell

A layer-by-layer assembly technique used to fabricate the gold electrodes—which provide both the electrocatalytic cathode and the conductive substrate for the anode—helped boost the power capacity to as much as 3.7 milliwatts per square centimeter. Results of the research were reported October 26 in the journal Nature Communications.

Read more at Phys.org

Image Credit: Georgia Tech/Korea University

-jk-