A better battery
Upcoming SlideShare
Loading in...5
×
 

A better battery

on

  • 303 views

A Battery with a Twist was discussed

A Battery with a Twist was discussed

Statistics

Views

Total Views
303
Views on SlideShare
303
Embed Views
0

Actions

Likes
0
Downloads
0
Comments
0

0 Embeds 0

No embeds

Accessibility

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

    A better battery A better battery Presentation Transcript

    • Presented by: •Janine V. Samelo BSChem 2
    • Battery A can full of chemicals that produce electrons When the electrodes are connected to a device to be powered, a chemical reaction occurs. Chemical reactions generate energy that allows electrical current to flow
    • Battery with a twist: Spin Battery  Developed in University of Miami in US and universities of Tokyo and Tohoku in Japan  It stores energy in magnets Nanomagnets- used to induce electromotive force  Magnetic tunnel Junction- it is where magnetic energy is converted directly into electrical energy  Electrical current made in the process is called spin-polarized current.
    • It uses spintronics where the electron’s spin as well as its charge is taken into account. Spin battery can be charged by applying a large magnetic field in the magnetic tunnel junction. Large magnetic field Large energy Spin battery can be used for creation of faster, cheaper computer hard drives with no moving parts. Can also be used to power cars
    • Vanadium Redox Flow Battery (VRB) Invented in The University of New South Wales in Australia Uses an electrolyte where energy is stored and cell stack where energy conversion takes place. Stores energy in two electrolyte solutions: 1. sulfuric acid 2. emulsified vanadium particles Stores energy in two tanks: bigger tanks larger energy Solutions are pumped to opposite sides of the cell that are separated by a polymer membrane. They flow toward the proton exchange membrane where redox reaction between the electrolytes occur.
    • During the cycle, hydrogen ions are exchanged between two tanks. VRB can recharge and discharged several times w/o wearing out the electrolyte. Can store, absorb and release big amounts of electricity easily. Alternative power to solar and wind farms
    • Why Vanadium?  The four oxidation states (+2, +3, +4, +5) carries different amounts of electric charge  Can be used for both positive (anode) and negative (cathode) solutions.  Vanadium solutions have indefinite life, so it can be continuously used and reused
    • References:  Bato Balani ISSN 0117-7050 vol.29 No. 3  Bato Balani ISSN 0117-7052 vol.29 No. 4  www.eurekalert.org/pub_releases/2009-03/uom- uom_1031109.php  www.physics.umd.edu/rgroups/spin/intro.html  www.allaboutbatteries.com/VRB.html  www.electricitystorage.org/search/results/3603ae81d4 ca91eb016e4d849142623e