Super capacitors merged with batteries
(hybrid battery) will become the new super battery. Just about everything that is now powered by batteries will
be improved by this much better energy supply. They can be made in
most any size, from postage stamp to hybrid car battery pack. Their light
weight and low cost make them attractive for most portable electronics and
phones, as well as aircraft and automobiles.
new ones are flexible and biodegradable and can be powered by body fluids.
(Since body fluids can act as an electrolyte, the battery can be used for
medical devices and could be installed into a patient fully charged but dry
and feed off bodily fluids to allow it to re-power and discharge energy.
The future of the battery is here...
What are the
Advantages of a Super Capacitor?
Virtually unlimited life cycle
- cycles millions of time -10 to 12 year life
No danger of
Very high rates of charge and discharge
High cycle efficiency (95% or more)
Super capacitors and ultra capacitors are relatively
expensive in terms of cost per watt
Linear discharge voltage prevents use of the full
Low energy density - typically holds one-fifth to
one-tenth the energy of an electrochemical battery
Cells have low voltages - serial connections are
needed to obtain higher voltages. Voltage balancing is required if more
than three capacitors are connected in series
High self-discharge - the rate is considerably higher than that of an
Requires sophisticated electronic control and
Supercapacitors or UltraCapacitors were initially used by the US military
to start the engines of tanks and submarines. Most applications now are in
small appliances, handheld electronics and hybrid electric vehicles.
NASA has a research project to use supercapacitors in an electric bus
called the Hybrid Electric Transit Bus. The energy used to start the engine
and accelerate the bus is regenerated from braking. During test runs, a bus
loaded with 30 supercapacitors, each of them weighing 32 kg and releasing
energy of 50 kJ at 200 V managed to run for four miles.
In most hybrid vehicles, 42 V super capacitors are used. General Motors
has developed a pickup truck with a V8 engine that uses the supercapacitor /
to replace the battery. The efficiency of the engine rose by 14%. The
supercapacitor supplies energy to the alternator. Toyota has developed a
diesel engine using the same technology and it is claimed to use just 2.7
liters of fuel per 100 km.
Will Supercapacitors replace the battery?
A supercapacitor by itself cannot totally replace the
battery. But, by merging a supercapacitor and a battery together - like
a "Hybrid Battery" it will be possible for supercapcitors to replace the
battery as we know it today.
Supercapacitors need batteries to store the energy
and are basically used as a buffer between the battery and the device.
Supercapacitors can be charged and discharged hundreds of thousands of
times where a battery cannot do that. Soon the price point will be where
most every electronic device will use them. As a hybrid battery.. it
will be the new super battery.