One of today’s biggest mobile problems
is that of battery life. When the battery is fully charge the world is our at
out fingertips, but when it is running low or flat then we are effectively cut
off from the world. Having to recharge the smartphone can be a chore we would
rather live without and the time it often takes to recharge can seem an
eternity.
So what if you could charge your
battery in a minute, it held its charge longer and the battery itself was
smaller and more flexible?
Researchers in Stanford University have made a
breakthrough that could lead to the fast charging and longer lasting batteries
and have published their findings in Nature (April 6th). In an article, the
authors note, ‘This was the first time an ultra-fast aluminium-ion battery was
constructed with stability over thousands of cycles.’
Using an aluminum-ion prototype, they
were able to charge a smartphone type battery in 60 seconds, or 60 times faster
than the conventional lithium-ion battery. The protoype consists of a soft
pouch, containing aluminium for one electrode and a graphite foam for the other
- all surrounded by a special liquid salt. Also they claim that its
durability is also greater and that it can stand up to about 7,500
charge-discharge cycles before losing any of its capacity compared to Lithium-ion
batteries 1,000 cycles. But it doesn’t stop there and they also have found that
there are safety and pliability benefits.
Ming Gong, co-lead author of the Nature
study, ‘You can bend it and fold it, so it has the potential for use in
flexible electronic devices. Aluminium is also a cheaper metal than lithium.’
Prof Hongjie Dai from Stanford
University in California claims, ‘Our new battery won't catch fire, even if you
drill through it.’ This could address concerns raised on lithium-ion batteries,
which have resulted in recent bans on air transport.
Now the challenge is moving what was
discovered in the labs into being a commercial reality. Some question the
energy density of these batteries and whether the results in the lab can be
scaled up, but irrespective the findings start to point the way to creating new
opportunities to connect for longer, more efficiently and could open the doors
to many new devices and applications.
We just now have to wait.