paper battery

A

TECHNICAL SEMINAR

ON

PAPER

BATTERY

PRESENTED BY:

P.RAGHUNATHA REDDY,

11F31AO220.

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Cellulose Paper

+ Nano-technology

An 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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GENERAL Li-ION

BATTERY Generally Li-ion re-chargeable batteries are used in mobiles,

laptops and most of the electronic devices.

3 primary functional component of Li-ion battery are:

1. -ve electrode(graphite)

2. +ve electrode(cobalt oxide)

3.electrolyte( lithium salt in organic solvent)

During discharge and charging, lithium ions Li+ carry the current

from the negative to the positive electrode and vice-versa

respectively, through the non-aqueous electrolyte .

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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 electronics .

WHAT IS A PAPER BATTERY?

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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.

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• 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

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Materials and Description

This energy storage device is based on two basic,

inexpensive materials:

carbon nanotubes

and cellulose.

Also an ionic liquid provides the third component:

electrolyte.

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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

aligned 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 D IAGRAM

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A paper battery is a flexible, ultra-thin

energy storage and production device

formed by combining carbon nanotube s

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 electronics .

PAPER BATTERY:

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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 Nanotubes (SWNT)

Multi-wall Nanotubes (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?

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• 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.

• Electrons must flow from the negative to the positive

terminal for the chemical reaction to continue. 3/26/2015 15DEPT. OF EEE

• 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.

The versatile paper, which stores energy like a conventional

battery, can also double as a capacitor capable of releasing

sudden energy Bursts for high-power applications. 3/26/2015 18DEPT. OF EEE

CONCLUSION

• This energy storage device is cost-effective because

the device can be able to be used in the smallest and

most diversely designed electronics. Such as cell

phones, mp3 players and medical equipment.

• The researchers say that it can also be used in

automobiles and aircraft. But it has a poor processibility,

being that it is particularly insoluble of infusible. Lastly,

the use of ionic liquid makes the device environmentally

friendly; a major concern in nanotechnology.

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