logging in or signing up BATTERY PPT meetujain Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 1686 Category: Science & Tech.. License: All Rights Reserved Like it (3) Dislike it (0) Added: September 28, 2010 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... By: gazal7 (7 month(s) ago) may i download it please ,,,,,,, Saving..... Post Reply Close Saving..... Edit Comment Close By: meetujain (16 month(s) ago) gv me ur id Saving..... Post Reply Close Saving..... Edit Comment Close By: marisamy5 (16 month(s) ago) i want to down load your file let me know how Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript : PRESENTATION ON WORKING OF BATTERIES SUBMITTED TO: SUBMITTED BY: Mr. AMANDEEP S. PATTI NAVDEEP VERMA MANISHA NEHA TANDON NANCY CONTENTS : CONTENTS WHAT IS BATTERY? HISTORY OF BATTERIES TYPES OF BATTERIES PARTS OF BATTERIES TERMS RELATING TO BATTERIES WORKING OF BATTERIES BATTERIES ARRANGMAENTS WHY RECHARGEBLE BATTERIES ? WHEN NOT TO USE RECHARGEBLE BATTERY HOW IT IS RECHARGED? REASONS OF BATTERY DEGRADATION What is BATTERY? : What is BATTERY? A system which converts chemical energy into electrical energy More correctly, a battery is an electrochemical cell Galvanic Cells Electrolytic Cells HISTORY OF BATTERIES : HISTORY OF BATTERIES 1800 Voltaic pile: silver zinc 1836 Daniell cell 1899 Junger: nickel cadmium cell 1946 Neumann: sealed NiCd 1960s Alkaline, rechargeable NiCd 1970s Lithium, sealed lead acid 1990 Nickel metal hydride (NiMH) 1991 Lithium ion 1992 Rechargeable alkaline 1999 Lithium ion polymer TYPES OF BATTERY : TYPES OF BATTERY There are really only two types: Disposable (Primary Cell) For e.g :-Zinc-chloride batteries Alkaline batteries Button cells Lithium-ion batteries Rechargeable (Secondary cell) For e.g:-Accumulators PARTS OF BATTERIES : PARTS OF BATTERIES A cell has three main parts:- ELECTROLYTE ANODE CATHODE SEPRATOR TERMS RELATING TO BATTERIES : TERMS RELATING TO BATTERIES Oxidation:- Loss of Electrons is Oxidation Reduction:- Gain of Electrons is Reduction Anode:- where oxidation takes place. Cathode:- where reduction takes place Voltage:- is the electrical energy that it gives off, measured in volts (V) Current:- is the rate at which electrons pass through the cell, measured in amperes (A) WORKING OF BATTERIES : WORKING OF BATTERIES Nickel-Cadmium Battery Cathode NiO(OH) Anode Cd Separator NaOH WORKING OF BATTERIES : WORKING OF BATTERIES Nickel-Cadmium battery:- the reactions look something like this: Oxidation:- Cd(s) + 2 OH- (aq) → Cd(OH)2(s) + 2 e- Reduction:- 2NiO(OH)(s) + 2 H2O(l) + 2 e- → 2Ni(OH)2(s) + 2 OH- (aq) Net:- Cd(s) + 2NiO(OH)(s) + 2 H2O(l) → Cd(OH)2(s) + 2Ni(OH)2(s) Electrons moving from one place to another – this is electricity No`s of electrons in oxidation and reduction must be same. Contd… : Contd… Alkaline Battery They all have the same voltage, because they’re all based on the same electrochemical cell Contd… : Contd… Reactions in Alkaline Batteries Oxidation Zn(s) + 2 OH- (aq) → Zn(OH)2(s) + 2 e- Reduction 2 MnO2(s) + H2O(l) + 2 e- → Mn2O3(s) + 2 OH- (aq) Net Zn(s) + 2 MnO2(s) + H2O(l) → Zn(OH)2(s) + Mn2O3(s) BATTERIES ARRANGMENTS : BATTERIES ARRANGMENTS Serial arrangements :- In serial arrangements voltages add up Parallel arrangements:- In parallel arrangements currents add ups WHY RECHARGEBLE BATTERIES? : WHY RECHARGEBLE BATTERIES? Purchasing rechargeable batteries saves money. Protects the environment They can be reused many times ,reducing operating cost. WHEN NOT TO USE RECHARGEBLE BATTERY? : WHEN NOT TO USE RECHARGEBLE BATTERY? They lose up to 1% of their power capacity per day. Emergency equipment (flashlights, radios, emergency medical devices, etc…). Low-power-use devices in difficult-to-access areas (field monitoring devices). HOW IT IS RECHARGED? : HOW IT IS RECHARGED? Recharge process is the reverse of the discharge process. An external source of direct electrical current supplies electrons to the anode and removes them from cathode, forcing the chemical reactions into reverse. REASONS OF BATTERY DEGRADATION : REASONS OF BATTERY DEGRADATION Battery is connected to a device Battery is charged Battery is opened Battery is chemically activated : THANKS FOR YOUR ATTENTION You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
BATTERY PPT meetujain Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 1686 Category: Science & Tech.. License: All Rights Reserved Like it (3) Dislike it (0) Added: September 28, 2010 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... By: gazal7 (7 month(s) ago) may i download it please ,,,,,,, Saving..... Post Reply Close Saving..... Edit Comment Close By: meetujain (16 month(s) ago) gv me ur id Saving..... Post Reply Close Saving..... Edit Comment Close By: marisamy5 (16 month(s) ago) i want to down load your file let me know how Saving..... Post Reply Close Saving..... Edit Comment Close Premium member Presentation Transcript : PRESENTATION ON WORKING OF BATTERIES SUBMITTED TO: SUBMITTED BY: Mr. AMANDEEP S. PATTI NAVDEEP VERMA MANISHA NEHA TANDON NANCY CONTENTS : CONTENTS WHAT IS BATTERY? HISTORY OF BATTERIES TYPES OF BATTERIES PARTS OF BATTERIES TERMS RELATING TO BATTERIES WORKING OF BATTERIES BATTERIES ARRANGMAENTS WHY RECHARGEBLE BATTERIES ? WHEN NOT TO USE RECHARGEBLE BATTERY HOW IT IS RECHARGED? REASONS OF BATTERY DEGRADATION What is BATTERY? : What is BATTERY? A system which converts chemical energy into electrical energy More correctly, a battery is an electrochemical cell Galvanic Cells Electrolytic Cells HISTORY OF BATTERIES : HISTORY OF BATTERIES 1800 Voltaic pile: silver zinc 1836 Daniell cell 1899 Junger: nickel cadmium cell 1946 Neumann: sealed NiCd 1960s Alkaline, rechargeable NiCd 1970s Lithium, sealed lead acid 1990 Nickel metal hydride (NiMH) 1991 Lithium ion 1992 Rechargeable alkaline 1999 Lithium ion polymer TYPES OF BATTERY : TYPES OF BATTERY There are really only two types: Disposable (Primary Cell) For e.g :-Zinc-chloride batteries Alkaline batteries Button cells Lithium-ion batteries Rechargeable (Secondary cell) For e.g:-Accumulators PARTS OF BATTERIES : PARTS OF BATTERIES A cell has three main parts:- ELECTROLYTE ANODE CATHODE SEPRATOR TERMS RELATING TO BATTERIES : TERMS RELATING TO BATTERIES Oxidation:- Loss of Electrons is Oxidation Reduction:- Gain of Electrons is Reduction Anode:- where oxidation takes place. Cathode:- where reduction takes place Voltage:- is the electrical energy that it gives off, measured in volts (V) Current:- is the rate at which electrons pass through the cell, measured in amperes (A) WORKING OF BATTERIES : WORKING OF BATTERIES Nickel-Cadmium Battery Cathode NiO(OH) Anode Cd Separator NaOH WORKING OF BATTERIES : WORKING OF BATTERIES Nickel-Cadmium battery:- the reactions look something like this: Oxidation:- Cd(s) + 2 OH- (aq) → Cd(OH)2(s) + 2 e- Reduction:- 2NiO(OH)(s) + 2 H2O(l) + 2 e- → 2Ni(OH)2(s) + 2 OH- (aq) Net:- Cd(s) + 2NiO(OH)(s) + 2 H2O(l) → Cd(OH)2(s) + 2Ni(OH)2(s) Electrons moving from one place to another – this is electricity No`s of electrons in oxidation and reduction must be same. Contd… : Contd… Alkaline Battery They all have the same voltage, because they’re all based on the same electrochemical cell Contd… : Contd… Reactions in Alkaline Batteries Oxidation Zn(s) + 2 OH- (aq) → Zn(OH)2(s) + 2 e- Reduction 2 MnO2(s) + H2O(l) + 2 e- → Mn2O3(s) + 2 OH- (aq) Net Zn(s) + 2 MnO2(s) + H2O(l) → Zn(OH)2(s) + Mn2O3(s) BATTERIES ARRANGMENTS : BATTERIES ARRANGMENTS Serial arrangements :- In serial arrangements voltages add up Parallel arrangements:- In parallel arrangements currents add ups WHY RECHARGEBLE BATTERIES? : WHY RECHARGEBLE BATTERIES? Purchasing rechargeable batteries saves money. Protects the environment They can be reused many times ,reducing operating cost. WHEN NOT TO USE RECHARGEBLE BATTERY? : WHEN NOT TO USE RECHARGEBLE BATTERY? They lose up to 1% of their power capacity per day. Emergency equipment (flashlights, radios, emergency medical devices, etc…). Low-power-use devices in difficult-to-access areas (field monitoring devices). HOW IT IS RECHARGED? : HOW IT IS RECHARGED? Recharge process is the reverse of the discharge process. An external source of direct electrical current supplies electrons to the anode and removes them from cathode, forcing the chemical reactions into reverse. REASONS OF BATTERY DEGRADATION : REASONS OF BATTERY DEGRADATION Battery is connected to a device Battery is charged Battery is opened Battery is chemically activated : THANKS FOR YOUR ATTENTION