Posts Tagged ‘batteries’

Recharge Alkaline Batteries

Thursday, March 17th, 2011

You heard that right.  Alkaline batteries can be recharged.  A battery is nothing more than 2 or more electrically active metals with an electrolyte in between them.  The electrolyte both separates the metals and allows electrons to go between the metals.  When a battery discharges, a chemical reaction takes place within that little AA battery to produce the current.   read more »

Making Electronics More Efficient

Wednesday, March 2nd, 2011

Have you ever wondered why laptops need the “charging brick”?  Laptops have had these for as long as I can remember.  In laptops, high-voltage AC power is converted to low-voltage DC power.  Apple helped to make them a little less unsightly by making them a bit smaller.  However they are still cumbersome at best.  Fret no more.  A Google Ventures backed company called Transphorm has created a technology that will eliminate the charging brick. read more »

New Lithium Batteries Good for 10,000 Charges

Friday, February 5th, 2010

Battery technology has lagged behind in terms of advancement.  There are two main hindrances with batteries…storage capacity and wear.  We have found some interesting alternatives to batteries, but the old double a  is going to be hard to replace in form, and until there are some real breakthroughs we might have to hold on to our dreams of phones and laptops with super fast processors.  However, before you wake up, a company has come through with an innovation in the wear category. read more »

The Coke Phone?

Thursday, January 7th, 2010

We have seen green technology come to mobile phones before in the form of the Samsung Spring Reclaim, and we have also seen green tech influence the end of the life cycle of the phone by being able to recycle it easier with the ecoATM.  However, Designer Daizi Zheng thinks that the production of the batteries ” is expensive, consuming valuable resources on manufacturing, presenting a disposal problem and harmful to the environment.”

She was looking to catch the problem on the front end, and she might be on to something.  Zheng designed a phone for Nokia that would run on Coke.  Running a fuel cell on sugar water is nothing new, but the tandem of Coke and Nokia could make a big splash. read more »

Spintronics Could Lead to Magnetic Batteries

Monday, October 13th, 2008
(A) Heating one side of a conductive rod causes heated electrons to move to the other end, creating a voltage. (B) Heating one side of a magnetized nickel-iron rod creates a “spin voltage,” with spin-up and spin-down electrons on opposite ends. Image credit: (c)2008 Nature.

Eiji Saitoh a physicist at Keio University in Yokohama, Japan, and his colleagues have published their results in a recent issue of Nature. As they explain, the term “spin Seebeck effect” comes from the original Seebeck effect, which is a thermoelectric phenomenon discovered by Thomas Johann Seebeck in the 1800s. The Seebeck effect states that, heating one side of a conducting rod causes electrons at that end to heat up and move toward the cooler side, creating a voltage. read more »