Download Electrochemical Energy: Study Material for Engineering and Architecture and more Summaries Electrochemistry in PDF only on Docsity!
NEGROS ORIENTAL STATE UNIVERSITY NOHS (1907) I NOTS (1927) I EVSAT (1956) I CVPC (1983) Kagawasan Ave., Dumaguete City, Negros Oriental, Philippines 6200 COLLEGE OF ENGINEERING AND ARCHITECTURE Main Campus II, Bajumpandan, Dumaguete City 6200
ELECTROCHEMICAL
ENERGY
Prepared By:
Group 11
- Brylle Andrae G. Mangao
- Charisse Nicole G. Montaño
Instructor:
Mrs. Liezl M. Honculada
NEGROS ORIENTAL STATE UNIVERSITY NOHS (1907) I NOTS (1927) I EVSAT (1956) I CVPC (1983) Kagawasan Ave., Dumaguete City, Negros Oriental, Philippines 6200 COLLEGE OF ENGINEERING AND ARCHITECTURE Main Campus II, Bajumpandan, Dumaguete City 6200 Objectives Students will be able to know the; Electrochemical energy REDOX , oxidation and reduction in terms of loss or gain of electrons. The different type of cells The inventions and product that can produce electrochemical energy Advantage and disadvantages of electrochemical energy Cell potential, Gibb’s free energy, Nerst equation
NEGROS ORIENTAL STATE UNIVERSITY NOHS (1907) I NOTS (1927) I EVSAT (1956) I CVPC (1983) Kagawasan Ave., Dumaguete City, Negros Oriental, Philippines 6200 COLLEGE OF ENGINEERING AND ARCHITECTURE Main Campus II, Bajumpandan, Dumaguete City 6200 Motivation/Prompting Question:
- How can electrochemical energy affect our life? Discussion Y Energy in chemistry defined as the ability to do work where work is the movement of the body to be some force. There are different kind of energy, the electrical, chemical, mechanical, thermal, nuclear, kinetic or other various form. But now we will define and understand the other type of energy which is the Electrochemical energy. Electrochemical Energy is the conversion of chemical energy to electrical energy or vice versa. The reactions that happens during the conversion of electrochemical energy is called Redox reaction which includes the transfer of electrons. Redox (oxidation-reduction) is a reaction in which one substances gets oxidized and other gets reducing. The oxidation and reduction reactions always occur simultaneously in redox or Oxidation- Reduction reactions. The substance getting reduced in a chemical reaction is known as the oxidizing
NEGROS ORIENTAL STATE UNIVERSITY NOHS (1907) I NOTS (1927) I EVSAT (1956) I CVPC (1983) Kagawasan Ave., Dumaguete City, Negros Oriental, Philippines 6200 COLLEGE OF ENGINEERING AND ARCHITECTURE Main Campus II, Bajumpandan, Dumaguete City 6200 agent, while a substance that is getting oxidized is known as the reducing agent. In Electrochemical energy there are cells that can generate the electrical energy it is the Electrochemical Cell. The Electrochemical cell is a device that converts chemical energy to electrical energy and electrical energy to chemical energy. It has two types the Galvanic Cell (ex.drycell) and Electrolytic Cell (ex. Pb-Acid Battery). Galvanic cell is the cell that converts the chemical energy to electrical energy while the Electrolytic cell converts the electrical energy to chemical energy. There are two type of galvanic cell the primary which the batteries are disposable and the secondary where the batteries are rechargeable. Electrochemical Cells It is either generate electrical energy from chemical reactions or electrical energy to cause chemical reactions. An electrochemical cell is a device that can generate electrical energy from the chemical reactions occurring in it, or use the electrical energy supplied to it to facilitate chemical reactions in it. These devices are capable of converting chemical energy into electrical energy, or vice versa. A common example of an electrochemical cell is a standard 1.5-
NEGROS ORIENTAL STATE UNIVERSITY NOHS (1907) I NOTS (1927) I EVSAT (1956) I CVPC (1983) Kagawasan Ave., Dumaguete City, Negros Oriental, Philippines 6200 COLLEGE OF ENGINEERING AND ARCHITECTURE Main Campus II, Bajumpandan, Dumaguete City 6200 disadvantages. Advantages of electrochemical energy are lost cost and non-toxic materials, while the disadvantages are short lifetime, low power, cannot be recycled. There are three ways to calculate the specific cell or how to know the amount that the cell can produced. The Cell Potential is the measure of potential difference between two half cells in an electrochemical cell. It is represented by the symbol Ecell. The Gibb’s Free Energy is the energy associated with a chemical reaction and is equal to the difference between the enthalpy (ΔH) of a system and the product of its entropy (ΔS) and absolute temperature( T). The Nernst Equation equation calculates electrochemical cell potential at any known temperature, pressure, and concentration. LEARNING ACTIVITIES/EXERCISES What is electrochemical energy?
NEGROS ORIENTAL STATE UNIVERSITY NOHS (1907) I NOTS (1927) I EVSAT (1956) I CVPC (1983) Kagawasan Ave., Dumaguete City, Negros Oriental, Philippines 6200 COLLEGE OF ENGINEERING AND ARCHITECTURE Main Campus II, Bajumpandan, Dumaguete City 6200 What is the shortened term for reduction and oxidation reaction? What are the types of electrochemical cells? ASSESMENT https://forms.gle/BvHZxQuKuTFAT3YS REFERENCES https://www.youtube.com/watch?v=- Y8OFIjrRB https://byjus.com/jee/nernst-equation/ https://www.chemguide.co.uk/physical/ entropy/deltag.html https://energyfaculty.com/electrochemical- energy/ https://www.youtube.com/watch?v=Fq- NH9INBGA&t=172s https://www.frontiersin.org/articles/10.3389/ fchem.2014.00079/full
