Give the qualifier in the article about the issues with the electrolyte:Nekota wrote:Fluoride Ion Batteries offer 10x energy density over Lithium Ion
http://www.rdmag.com/News/2011/10/Energ ... thium-ion/" onclick="window.open(this.href);return false;
...I doubt we'll be seeing fluoride batteries anytime soonfrom R&D magazine article that wrote:Another challenge lies in the further development of the electrolyte: The solid electrolyte applied so far is suited for applications at elevated temperatures only. It is therefore aimed at finding a liquid electrolyte that is suited for use at room temperature.
At MIT, Professor Yet-Ming Chiang and his team of researchers are trying to reinvent the rechargeable battery for electric vehicles and and grid storage.
The new lightweight and inexpensive batteries would be half the weight and price of current batteries, and would make refueling as easy as filling a traditional tank with gas. No more waiting overnight for a charge. The new battery relies on an innovative architecture called a semi-solid flow cell, in which solid particles are suspended in a carrier liquid and pumped through the system. Flow-cell batteries have been around for awhile but they use a liquid fuel that is low in energy density and therefore too large and impractical for cars.
The semi-solid flow battery uses a fuel called "Cambridge Crude" designed at MIT, which is 10 times more energy dense than liquid flow-cell, making it compact and lightweight enough for cars. These batteries are also well suited for large scale electricity storage because they be easily scaled up at a low cost.
Personally, I find the ability to charge at home one of the best attributes of current EVs. I would never buy one that couldn't be charged at home, where I had to go to a "battery" station instead.Clarissa wrote:It sounds amazing. That kind of batteries would absolutely change the way things work. Surely, there is a question of marketing and how much the big shots are ready to allow them to get to the market.
The MIT concept is a flow battery with semi-solid material that is pumped through the battery stack. This means you will need pumps, valves, etc. to control the flow. Scale up could be an issue for use in EVs where available volume is limited. Many years ago, use of a zinc slurry in a flow battery (Zn/air) was considered but the system is more complicated than if the Zn is stationary (for example, in a Zn/air hearing aid battery). The flow battery is more practical for stationary applications, and could be used to charge EVs, but using them on-board to power EVs is more difficult for me to conceive. However, there is some PR from Europe suggesting flow batteries can be used on-board EVs, so we shall see.surfingslovak wrote:Picked this up on the Tesla forum. It's a fun video, which talks about liquid batteries:
http://news.yahoo.com/blogs/this-could-" onclick="window.open(this.href);return false; ... 55500.html