Must Read Rumors

Kate Middleton to attend SportsAid 40th anniversary dinner at the Palace next month

The royal’s next engagement will honor one of the charities she supports.

Kate Middleton calls William ‘babe’ – Find out what other nicknames the Duchess uses for her husband

Catherine, Duchess of Cambridge, and Prince William have their own set of nicknames for each other, just like every other couple.

Kate Middleton carries out new sailing engagement in Portsmouth

Catherine, Duchess of Cambridge, is definitely a keen royal sailor!

Kate Middleton praised by Queen’s photographer for ‘wonderful pictures, beautifully shot’ of her children

In the past couple of years the Duchess of Cambridge, née Kate Middleton, has delighted royal fans with several amazing pictures of her children, Princess Charlotte and Prince George.

Kate Middleton boxes at the launch of Heads Together mental health campaign

The Duchess of Cambridge, née Kate Middleton, showed off her boxing skills during a recent mental health campaign.

Kate Middleton to attend SportsAid 40th anniversary dinner at the Palace next month
Kate Middleton calls William ‘babe’ – Find out what other nicknames the Duchess uses for her husband
Kate Middleton carries out new sailing engagement in Portsmouth
Kate Middleton praised by Queen’s photographer for ‘wonderful pictures, beautifully shot’ of her children
Kate Middleton boxes at the launch of Heads Together mental health campaign

Sodium batteries an alternative to lithium-ion batteries?

by Julia
May 8, 2012 at 1:15 pm

Soon we could get a cheaper alternative to lithium-ion battery, but with the same advantages.

The new batteries are based on the electrodes formed from a mixture of iron oxide, manganese and sodium. The last one is a reactive metal with properties very similar to those of lithium, but widely available worldwide and therefore much cheaper to use.

Despite the high costs and limited life, lithium-ion batteries have been powered portable computers, mobile phones and almost any other portable gadgets for years.

Currently, the development of lithium batteries seems to be reaching an end, showing that the technology is beginning to reach its limits.

A good example of this is the difference between the energy required to charge tablets and smartphones and the energy storage demonstrated by current batteries.

However, the increase of the energy density in Li-ion batteries is made in small steps and the price is higher than production costs.

A group of researchers from the University of Tokyo has come up with a daring project. They propose the replacement of the composition of lithium batteries with a combination of less expensive materials, but with similar results.

Shinichi Komaba’s team has developed a Na-ion battery that offers an energy density of 520 mWhr / g, similar to lithium-ion batteries. Unfortunately, the sodium-ion batteries developed by the Japanese researchers are losing their energy storage capacity after just 30 charging cycles, so their use in commercial products is not yet possible.

But a solution could come from Argonne National Laboratory in Chicago, where another version of the sodium battery is being tested.

A team led by a researcher named Chris Johnson has created a new material using layered vanadium pentoxide which is capable maintaining its capacity for 200 charging cycles.

At present, the most accessible lithium-ion batteries can maintain a minimum of 300 charging cycles, without losing significant energy storage capacity.

The transition to the new type of battery could boost the autonomy of these devices without raising the final costs.

Researchers must now focus on finding a way to store more energy without increasing the physical dimensions of the battery.

Lithium-ion and sodium-ion batteries now offer the same capacity, except that the latter are cheaper.

Most Commented

    What do you think? What is your gossip?

    The rules: Keep it clean, stay on the subject and use English only - or we may delete your comment. If you see inappropriate language email us. Read our Terms and Conditions