Paper Battery

WELCOME TO ENGINEERING WORLD

PAPER BATTERY

Presented By: M.NIKHIL RAM

In august 2007, a research team of senior professors “Ann and John H.BroadBent, Omkaram Nalamasu” developed the paper battery…

It is also known as “nano composite paper.”

A paper battery is a flexible, ultra-thin energy storage and production device formed by combining carbon nanotubes with a conventional sheet of cellulose-based paper.

What is a paper battery????

The process of construction can be understood in the following steps:

• Firstly, a common Xerox paper of desired shape and size is taken.• Next, by conformal coating using a simple Mayer rod method, the specially formulated ink with suitable substrates (known as CNT ink) is spread over the paper sample.

• The strong capillary force in paper enables high contacting surface area between the paper and nanotubes after the solvent is absorbed and dried out in an oven.

• A thin lithium film is laminated over the exposed cellulose surface which completes our paper battery. This paper battery is then connected to the aluminium current collectors which connect it to the external load.

• The working of a paper battery is similar to an electrochemical battery except with the constructional differences.

1.Batteries produce electrons through a chemical reaction between electrolyte and metal in the traditional battery.

2. Chemical reaction in the paper battery is between electrolyte and carbon nanotubes.

3. Electrons collect on the negative terminal of the battery and flow along a connected wire to the positive terminal

4. Electrons must flow from the negative to the positive terminal for the chemical reaction to continue.

Working:

DURABILITY:Paper batteries may be

folded, cut or otherwise shaped for different applications without any loss of integrity or efficiency

Cutting one in half halves its energy production. Stacking them multiplies power output.

The components are molecularly attached to each other

The carbon nanotube print is embedded in the paper and the electrolyte is soaked into the paper

It is highly used in many fields such as in cosmetics,Micro processor,thin display,functional card, elecronic appliances etc…..

USES:

Powered smart cards RF id tags

Pace makers in heart (uses blood as electrolyte)

Paper batteries recharge themselves from the moisture in the air

Do you Know ??

These are environmentally friendly and can be recycled