Notices
Page 2 of 2 FirstFirst 12
Results 101 to 102 of 102
Like Tree2Likes

Thread: Electric cars? Not as good as we think.

  1. #101  
    Moderator Moderator
    Join Date
    Apr 2007
    Location
    Washington State
    Posts
    8,324
    Quote Originally Posted by billvon View Post
    Might be at $10 a gallon - but with a car that uses only 50 gallons of gas a year, that's not a big hardship.
    Your comment resonates with me because the cost of gas ALREADY is about 10 bucks a gallon-- a major obstacle to other energy sources is most of the cost of fossil fuels is masked by other things, such as the cost of huge militaries to protect its extraction, shipment, and production and of course back end environmental impacts.
    Meteorologist/Naturalist & Retired Soldier
    “The Holy Land is everywhere” Black Elk
    Reply With Quote  
     

  2. #102  
    Forum Professor
    Join Date
    Apr 2009
    Posts
    1,122
    Engineering and colleagues have now developed a hybrid zinc battery that combines the best of zinc-air and zinc-nickel technologies, completing over 5,000 charging cycles with no loss of performance. The battery has a zinc anode, while its cathode is based on a carbon-coated nickel foam covered with nickel cobalt oxide nanowires. The liquid electrolyte between the electrodes contains hydroxide anions dissolved in water.
    A key reason for the battery's excellent performance is that the cathode works in two distinct ways during charging and discharging. When the battery charges, hydroxide ions from the electrolyte react with metal oxides in the cathode to produce oxyhydroxide compounds, freeing electrons. But the metals in the cathode also act as a catalyst, combining hydroxide anions to produce oxygen, water, and more electrons. These electrons flow around the circuit to the anode, where they combine with zinc ions in the electrolyte to produce zinc metal. During discharge, these electrochemical processes are reversed.
    The battery has a stable two-step discharge voltage between 1.75 and 1.0 volts, and maintained its performance over three months of continuous testing, vastly outstripping previous zinc batteries. Zong estimates that the battery can store about 270 Watt-hours per kilogram, with potential for improvement. "This is already on a par with lithium-ion batteries available on the market," he says.
    Read more at: https://phys.org/news/2017-07-low-co...ained.html#jCp
    Last edited by Stanley514; December 10th, 2017 at 08:47 PM.
    Antislavery
    Reply With Quote  
     

Page 2 of 2 FirstFirst 12

Similar Threads

  1. Replies: 5
    Last Post: February 15th, 2013, 10:38 AM
  2. Hybrid and Electric Cars
    By LunchBox in forum Environmental Issues
    Replies: 47
    Last Post: May 17th, 2010, 10:09 AM
  3. The new range of Renault's electric cars...
    By Samuel P in forum Environmental Issues
    Replies: 23
    Last Post: January 29th, 2010, 10:29 PM
  4. Electric Cars - An idea
    By dodinator in forum General Discussion
    Replies: 9
    Last Post: August 2nd, 2009, 02:21 AM
  5. Electric cars, the hot rods of the future
    By (In)Sanity in forum Mechanical, Structural and Chemical Engineering
    Replies: 35
    Last Post: August 4th, 2006, 10:16 PM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •