WELCOME TO MY SEMINAR

.PREPARED BY : Amiya Bisoi UNDER THE GUIDANCE OF

PROF.Ambika prasad hota

TOPIC:-

MICRO FUEL CELL THE BATTERY OF FUTURE

INDEX:-

1.Introduction 2.History 3.Need For Using MFC 4.Components 5.Mechanism of MFC 6.Adavantages 7.Disadvantages 7.Application 8.A look in to the future 9.Conclusion

INTRODUCTION:-

Fuel Cell:- A fuel cell is a device that converts

the chemical energy from a fuel into

electricity through a chemical reaction

with oxygen or another oxidizing agent.

High manufacturing and usage costs.

Micro Fuel Cell:- It is a type of or modification of fuel cell. A micro fuel cell is a power source for

electronic

devices that converts chemical energy into  \ electrical energy.

HISTORY:-

In 1838, German Physicist Christian Friedrich Schönbein invented the first crude fuel cell.

 The first commercial use of fuel cells was in NASA space programs to generate power for probes, satellites and space capsules.

Since then, fuel cells have been used in many other applications.

It is a technology from the early 1800s.

The major country making progress is Japan with united states both making positive strides on micro fuel cell search.

Major companies developing the technology include HITACHI,NEC and TOSHIBA.

MTI Fuel cell: Back up power for cell phone Smart fuel cell: cameras and laptop Toshiba: fuel cell powered PDA Casio: laptop powered by fuel cell

NEED OF MICRO FUEL CELL  Some conventional cells and batteries can

be recharged by connection to an external source of current.

Others must be discarded when they are spent.

A micro fuel cell, in contrast, is replenished merely be refilling its reservoir, or by removing the spent fuel cartridge and replacing it with a fresh one.

While the recharging process for a conventional cell or battery can take hours, replacing a fuel cartridge takes only seconds.

COMPONENTS:  Micro fuel cells have many similarities to

conventionally sized fuel cells. The basic components needed for operation of micro fuel cells, such as electrodes, membranes, 

current collectors, and gas distribution, parallel those needed for conventional fuel cells, but in a miniaturized form.

Micro fuel cells are often not self-contained, since elements such as fuel tanks lie outside of the cell and are connected to it separately.

For this reason, some types of micro fuel cells alone are unable to replace batteries in portable electronic devices.

FIGURE OF MFC

MECHANISM OF MICROFUEL CELL

A micro fuel cell is a portable power source for low power electronic devices that converts chemical energy into useable electrical energy.

It generates power through the electrochemical reaction of a fuel in the presence of a catalyst.

The Company's micro fuel cell uses methanol as fuel. Methanol, a common alcohol, has the advantage of high energy density offering the consumer the potential for longer use time and products with increased functionality.

The heart of a micro fuel cell comprises a central membrane coated on each side by a catalyst layer, one for reacting the fuel and the other for reacting oxygen from air.

The micro fuel cell produces electrical power when the fuel is introduced to the anode catalyst layer.

At the anode catalyst, the fuel reacts with water to produce protons, electrons and carbon dioxide.

The membrane allows protons to pass through to the cathode catalyst layer.

Electrons are forced to take an alternate path and flow through the wires of the electronic device, providing electrical power.

At the cathode catalyst layer, the protons and electrons recombine and react with oxygen to form water vapour.

The overall process in the methanol/air fuel cell is thus the direct conversion of the energy of methanol fuel to electric power, with carbon dioxide and water vapour as the only two by-products

ADVANTAGES :

Flexibility Higher quality of power Energy efficient Safe, quiet and reliable Run continuously for long period of time Environment benefit because of no

combustion Relives on existing natural resources

DISADVANTAGES:

Micro fuel cells are often not self-contained, since elements such as fuel tanks lie outside of the cell and are connected to it separately.

For this reason, some types of micro fuel cells alone are unable to replace batteries in portable electronic devices.

APPLICATIONS  One use of these micro fuel cells is as a

power source for everyday electronic devices such as cell phones, personal digital assistants, and even laptop computers, hearing aids.

For military and space application. For stationary application. For electric utility.

EXAMPLES OF ELECTRONICS APPLICATION:

A LOOK IN TO FUTURE: This type of fuel cell or micro fuel cell can be

used For cell miniaturisation and refuelling

infrastructure can be overcome by 3 to 4 years.

It may be more efficient than other fuel cells.

CONCLUSION- Let we stay connected longer and more

economically Conventional batteries like Lithium ion

rechargeable cells are replaced. Cell miniaturization and refuelling

infrastructure Can be overcome next 3 to 4 years. It is a direct conversion of methanol fuel to

electric power. Carbon dioxide and water vapours are by-

products.