A SEMINAR ON PAPER BATTERY

PRESENTED BY:CHANDAN PATHAKKNIPSS ENGG. COLLEGE SULTANPURVI SEM ECE

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Cellulose Paper + Nano-technologyAn Overview of the battery technology that powers our mobile society.___________________________?**

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INTRODUCTION The creation of the paper battery drew from a diverse pool of disciplines, requiring expertise in materials science, energy

storage and chemistry.

In august 2007, a research team at Rensselear polytechnic

Institute developed the paper battery, also known as nano composite paper.

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Battery Chemistry Electrochemical reaction - a chemical reaction between elements which creates electrons.

Oxidation occurs on the metals (electrodes), which creates the electrons.

Electrons are transferred down the pile via the saltwater paper (the electrolyte).

A charge is introduced at one pole, which builds as it moves down the pile.**

It is a hybrid energy storage device that combines characteristics of batteries and super capacitors.

It takes the high energy storage capacity of the battery and the high energy density of the super capacitor which producing bursts of extreme power.

**What is Nanocomposite Paper

This energy storage device is based on two basic, inexpensive materials:

Carbon Nanotubes

Cellulose

Electrolyte

**Materials and Description

How it is made To create this paper we have to first dissolve the cellulose in the ionic liquid and then infiltrate the cellulose paper with carbon nanotubes which form the uniform film.

Then it is solidified on dry ice, after this it is soaked in ethanol to remove the ionic liquid and dried in a vacuum, which gives us our final product: Nanocomposite paper.

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**BLOCK DIAGRAM

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

A paper battery acts as both a high-energy battery and super capacitor , combining two components that are separate in traditional electronic .

**PAPER BATTERY

WHAT IS A CARBON NANOTUBE?

A carbon nanotube is a tube-shaped material, made of carbon, having a diameter measuring on the nanometer scale.

Carbon Nanotubes have many structures, differing in length, thickness, and in the type of helicity and number of layers.

Although they are formed from essentially the same graphite sheet, their electrical characteristics differ depending on these variations, acting either as metals or as semiconductors.

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Carbon Nanotubes can be categorized by their structures:

Single wall Nanotube (SWNT)

Multi-wall Nanotube (MWNT)

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While a conventional battery contains a number of separate components, the paper battery integrates all of the battery components in a single structure, making it more energy efficient, Integrated devices.

The battery contains carbon nanotubes, each about one millionth of a centimeter thick, which act as an electrode. The nanotubes are embedded in a sheet of paper soaked in ionic liquid electrolytes, which conduct the electricity.

**How a paper battery works?

Electricity is the flow of electrical power or electrons

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

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

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

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The flexible battery can function even if it is rolled up, folded or cut.

"If we stack 500 sheets together in a ream, that's 500 times the voltage. If we rip the paper in half we cut power by 50%. So we can control the power and voltage issue."

Because the battery consists mainly of paper and carbon, it could be used to power pacemakers within the body where conventional batteries pose a toxic threat.

We wouldn't want the ionic liquid electrolytes in our body, but it works without them that is we can implant a piece of paper in the body and blood would serve as an electrolyte."

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APPLICATIONS

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Paper Battery Offers Future Power The black piece of paper can power a small light.

Flexible paper batteries could meet the energy demands of

the next generation of gadgets.

The ambition is to produce reams of paper that could one day power a car.

The paper battery was a glimpse into the future of power storage.

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