harsh mangla

17
NAME = HARSH MANGLA CLASS = X B ROLL . NO = 11 SUBJECT = SCIENCE TOPIC = ELECTROLYSIS OF WATER RAWAL INTERNATIONAL SCHOOL

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Page 1: Harsh mangla

NAME = HARSH MANGLACLASS = X B

ROLL . NO = 11SUBJECT = SCIENCE

TOPIC = ELECTROLYSIS OF WATERRAWAL INTERNATIONAL

SCHOOL

Page 2: Harsh mangla

“Energy can neither be created or destroyed, it can only be changed from one form to another”

– Albert Einstein

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Conventional Alternate

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How do we store electricity?

Through chemistry

battery

hydrogen

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Why is Hydrogen such a big deal?

Energy Density (Mega Joules per kilogram)

Li-ion Battery 0.54Gasoline 46.9Hydrogen 120.0

~ 220 times more energy than batteries

~ 2.6 times more energy than gasolineNO AVAILABLE SOURCE OF HYDROGEN

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Electrolysis of WaterElectrolysis: Using electricity to drive a non-spontaneous chemical reaction

H2 and O2

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What do we need?• Water• Electrolyte (PEM, salt water, citric acid)• Metal electrodes (Anode +, Cathode -)• Electricity

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Chemical what Happens

• Anode (positive):

• Cathode (negative):

OVERALL:

2H2O O2+4H++4e-

4H++4e-2H2

2H2O O2+2H2

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What is a PEM

• PEM – Proton Exchange Membrane• Used as fuel cells to produce electricity

• Must use deionized water• Can be run backwards as an electrolyses

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Proton Exchange Membrane

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DEMO

4H++4e-2H22H2O O2+4H++4e-

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How do we use the Hydrogen?

• Fuel Cells (electrolyzer in reverse)

• Run on H2 and O2 to form clean water.

• Water can then be recycled to electrolyzer.

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Setup PEM electrolyzer(s). Produce efficiency curves of PEM using

simple circuitry. Determine Hydrogen Generation Rate vs.

Power input.Build our own electrolyzer powered by our Solar Cells

What are we going to do?

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Electrolyte

Solar Cell

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Design a Power Plant

Electricity!!!

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WHAT INDUSTRY WANTS TO MAKE

Solar Cells

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THANK YOU