Clever Geek Handbook

POWERPASTE Application for Autonomous Power Supplies

POWERPASTE is an ultra high capacity hydrogen storage medium for PEM fuel cells invented and developed by Fraunhofer IFAM . POWERPASTE generates hydrogen on contact with water. The hydrogen capacity is about 10 wt% (i.e. 10 kg POWERPASTE → 1 kg hydrogen). This is a specific energy of 1.6 kWh / kg and an energy density of 1.9 kWh / liter, which is about 10 times the capacity of lithium-ion batteries. The award-winning POWERPASTE technology is patented (EU, US) and has many advantages over other energy storage technologies, in particular in the power range from 100 W to 10 kW.





Fig. 1: POWERPASTE; POWERPASTE cartridge; demo power supply 100 watts.
Fig. 1: POWERPASTE; POWERPASTE cartridge; demo power supply 100 watts.

A schematic representation of the operating principle of a power supply based on POWERPASTE is shown in the following diagram:





Figure: 2: Schematic representation of a power source based on POWERPASTE.
Figure: 2: Schematic representation of a power source based on POWERPASTE.

Unlike batteries, POWERPASTE power systems are independent of mains power and can be recharged in seconds by replacing the cartridge. In addition, POWERPASTE is highly stable and does not self-discharge. Capital costs per unit power and total cost of ownership for power systems based on POWERPASTE are comparable, in particular in the power range from 100 W to 10 kW, for example, for UAVs with long flight times or vehicles with extended range, as well as for various stationary applications such as standby power generators.





POWERPASTE , MgH2, . POWERPASTE :





Figure: 3: Reaction scheme for producing hydrogen.
. 3: .

POWERPASTE

, . . , ( ) . :





Figure: 4: General principle of the fuel cell.
. 4: .

:





  1. . ( , ) . - . , .





  2. . (, , ) (CO2).





  3. . (DMFC), CO2. - .





  4. , , - , , CO2. . POWERPASTE .





100 10 :





Table 1: Key performance indicators of autonomous energy sources
1:

- . , , ( , ):





Figure: 5: Specific energy (W / kg) and energy density (W / l) of some high energy fuels.
. 5: (/) (/) .

POWERPASTE

, ( ). ( ) . (NaBH4) ( ). , 15 / .





, . , :





MgH2 + 2 H2O → 2 H2 + Mg(OH)2





, c , / , . - . , Fraunhofer IFAM, .





, , NaBH4, , . POWERPASTE, , , Fraunhofer IFAM :





  • 1,9 /





  • /





  • ( +/- 90 ° )













  • ( 5 )





  • ( 2 / POWERPASTE)





Figure: 6: Reaction dynamics of pure magnesium hydride, magnesium hydride + addition of metal salt and POWERPASTE
. 6: , + POWERPASTE

POWERPASTE . ( , ) .





POWERPASTE

POWERPASTE : POWERPASTE, , , PEM, , / . :





Figure: 7: General diagram of a power source based on POWERPASTE
. 7: POWERPASTE

By metering precise amounts of POWERPASTE and water, the reaction in the hydrogen generator is controlled so that the amount of hydrogen produced exactly matches the hydrogen consumption of the fuel cell, ensuring a low pressure in the system and therefore reducing its weight. Refueling simply means replacing cartridges, making it extremely fast.







More articles:


All Articles