1 / 7

Energy Storage

Energy Storage. Lithium-ion Batteries MEEN 3344 Shaun Miller. Where does lithium come from?. More than half of the world’s lithium can be found under the Bolivian desert. Spodumene (hard rock)

konane
Télécharger la présentation

Energy Storage

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Energy Storage Lithium-ion Batteries MEEN 3344 Shaun Miller

  2. Where does lithium come from? • More than half of the world’s lithium can be found under the Bolivian desert. • Spodumene (hard rock) • The rock must be heated to 1100 degrees Celsius and then pulverized before the crystal are processed with acid to produce lithium. Mining process costs twice as much as lithium brines. • Hectorite Clay • New technique • Mining is cheaper and easier.

  3. Energy Density • Energy density is the capacity to store energy, affecting the range a vehicle can travel. • Since Li-ion battery has much higher energy density than nickel-metal hydride and lead acid it requires less materials for the same impact. • 1 kWh lead acid battery requires 14 liters and weighs 55lbs. • 1 kWh Li-ion battery requires 2.5 liters and 14.8 lbs.

  4. Discharge and Recharge • Lithium ion batteries contain lithium ions that move from the negative electrode to the positive electrode during discharge. • Use an intercalated lithium compound for the electrode material for quick recharging. • Cathode (positive electrode) is made of very pure lithium metal oxide. The more uniform the composition, the higher the performance and battery life. • Anode (negative electrode) is made of graphite. • The lithium ions travel from the positive electrode through the electrolyte to the negative electrode during charge.

  5. Advantages and Disadvantages • Advantages • The temperature of Li-ion batteries can be self-controlled using computers that control thermal cooling and heating to allow maximum efficiency. • Charge efficiency-97% • Recharge rate-10x faster than Lead-acid battery • Low maintenance • Driving range is high. • Longer life-up to 8 years for EV • Disadvantages • Production cost-$350 to $750 per kWh • Chevy Volt is rated 16 kWh-Battery can cost $12000

  6. Li-ion Battery Uses • Portable devices • Cell phones • Lap top computers • Watches • Etc. • Automobiles • Primarily for electric vehicles (EV)-Chevy Volt • Hybrid vehicles primarily use Nickel Metal-Hydride • Toyota Prius • Military • Thermal imagers • Combat and technical radios • Radio communication • Respirators • Robots • Medical • Implantable electronic devices • Cardiac Pacemakers • Cardiac Defibrillators • Neurostimulators • Drug infusion systems

  7. References • http://www.digikey.com/us/en/techzone/power/resources/articles/a-designer-guide-lithium-battery-charging.html?WT.z_sm_link=Twitter_pwrtzart_0926 • http://en.wikipedia.org/wiki/Energy_density • http://www.dailymail.co.uk/home/moslive/article-1166387/In-search-Lithium-The-battle-3rd-element.html • Battery Manufacturing for Hybrid and Electric Vehicles: Policy Issues,BillCanis, March 22, 2011 • http://www.reuters.com/article/2010/10/07/us-lithium-mines-idUSTRE6963X920101007 • Dundee Securities Corporation, Byron Capital Markets, U.S. Geological Survey, company websites.

More Related