Concrete Battery

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Nominal 1.5V and 20mAh with 10K Ώ


Google: concrete crystal battery

Optimising the Performance of Cement-Based Batteries

The development of a battery using different cement-based electrolytes to provide a low but potentially sustainable source of electricity is described. The current, voltage, and lifespan of batteries produced using different electrolyte additives, copper plate cathodes, and (usually) aluminium plate anodes were compared to identify the optimum design, components, and proportions to increase power output and longevity. Parameters examined include water/cement ratio, anode to cathode surface area ratio, electrode material, electrode spacing, and the effect of sand, aggregate, salts, carbon black, silica fume, and sodium silicate on the electrolyte. The results indicate that the greatest and longest lasting power can be achieved using high proportions of water, carbon black, plasticiser, salts, and silica fume in the electrolyte and using a magnesium anode and copper cathode. This cell produced an open-circuit voltage of 1.55 V, a resistor-loaded peak current over 4 mA, maintaining over 1 mA for 4 days, and a quasi steady current of 0.59 mA with a lifespan of over 21 days.

Found in Washington Post article.
The fracture toughness of an Imperial Roman mortar

The vaulted concrete monuments of ancient Rome have an unreinforced concrete core of Pozzolanic mortar and decimeter-sized coarse aggregate. An assessment of the mechanical and fracture properties of a reproduced Trajanic-era (c. 100ad) mortar is the subject of the present work. Description of a newly developed arc-shaped three-point bending test, devised to optimize eventual testing of Trajanic-era concrete specimens with an unusual drill core geometry, is supplemented with details of the reproduced material composition and inverse data reduction procedures. Three ages of mortar are tested, with results suggesting a relatively long curing process that increases mechanical and fracture properties. The mortar cured longest (180 days) is found to have a Young’s modulus of 3.4 GPa, uniaxial tensile strength of 0.5 MPa, and mode-I tensile fracture energy of 55 J/m2. These measurements describe a relatively ductile cementitious material with respect to modern concretes.


Separated by Creators, and sorted so oldest is first.

YouTube: Cement Battery

How to make a cement battery
prototype9000 - Published on Jan 27, 2011

Portland Cement Battery.ASF
Lidmotor - Published on Feb 22, 2011

Earth Lights 9/Cement Crystal Battery /John Bedini
Energenx - Published on Feb 23, 2011


Concrete Power.MOV
magnetman2010 - Published on Sep 27, 2011

concrete battery update #2.MOV
magnetman2010 - Published on Oct 28, 2011

Dad Scientist

Cement battery
Dad Scientist - Published on Sep 12, 2011

update 4 year old Rechargeable concrete battery
Dad Scientist - Published on Sep 11, 2016

Cement Battery Rechargeable and Runs a Drone Motor.
Dad Scientist - Published on Sep 24, 2016

Graphene Added

Robert and his assistant showed that their mixture was able to get a 5x tensile strength increase. Their formula is given in general terms.

Graphene in Concrete
Robert Murray-Smith - Published on May 25, 2017

| Graphene Concrete - Can You Help?
Robert Murray-Smith - Published on Jun 23, 2017

Graphene Concrete Update 2
Robert Murray-Smith - Published on Sep 8, 2017

Bedini Lectures

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