Batteries Made From Algae Are Better By Far...

Tuesday, 07 February 2012

 

Batteries Made From Algae Are Better By Far

The problem with mobile phones is that you have to charge them up, either at the mains or with batteries. That means somewhere in the world, that power that is supplied to you is generating an amount of CO2.  And we could do with less CO2 as to much of it is heating up the atmosphere and causing earth-wide impacts.  So the less you charge up your mobile phones, the better for all, but how can you make a battery last longer, one that you don’t have to charge as much, and also one that doesn’t use up so many resources, especially toxic resources?

But just how do you get round this 100 year old design - well maybe the answer for a more efficient, greener and more environmentally friendly battery is in the sea?

Researchers over at the Clemson University and at the Georgia Institute of Technology may have found the answer in the sea with Phaeophyceae otherwise known as brown algae.  With over 1500 species of the algae, it is one of the fastest growing plants on the planet, it can grow up to half a meter a day and up 60 meters long; to do this it produces alginates, which are the sugars which help it to grow.  But how does that help with making a better battery? What you need is to produce a better binder material within the battery?

The binder is the suspension agent for the silicon or graphite particles that react with the electrolyte within the battery to give you that charge; so better binder, better battery.  As the oceans salt water acts as a highly efficient kind of electrolyte, in which the brown algae produces tons of alginate, and the great news is that this is easy to extract.

Brown algae has been around for a 100 million years and more, it’s completely safe, super efficient and by using it as a binder it’s possible for the battery capacity to be increased by up to 8 times than that of the current Lithium – ion batteries used in mobile phones.