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From: Its from Onion <areda..._at_msn.com>
To: tscm-l2006 <tscm-..._at_googlegroups.com>
Subject: New batteries charge faster, last longer
Date: Mon, 21 Nov 2011 06:25:20 +0000
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EVANSTON, Ill. (UPI) -- U.S. researchers at Northwestern University say the=
y've created batteries for portable devices that charge faster and last 10 =
times longer.=20
By combining two methods, Professor Harold Kung and his team members create=
d lithium-ion batteries they said could make a smartphone run for a week on=
an 8-minute charge, the Chicago Sun-Times reported Friday.=20
The batteries, still two to five years from commercial production, could tr=
ansform the electric-vehicle industry, which is hampered by limited mileage=
ranges and lengthy charging times, Kung said.=20
Conventional lithium-ion batteries charge by sending lithium ions between t=
he two ends of the battery, the anode and the cathode. By sandwiching a lay=
er of silicone between the graphene sheets used to construct the anode, the=
battery can reliably hold far more lithium ions, increasing its capacity, =
Kung said.=20
And by making tiny holes in the graphene sheets, the ions can travel back t=
o the anode more quickly, drastically reducing the recharging time, he said=
.=20
"The challenge to supply and store energy in an clean and sustainable way i=
s very exciting and important," he said.=20
"We just need to take one or two more steps down the road," he said.=20
Copyright 2011 by United Press International =09=09 =09 =09=09 =20
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<html>
<head>
<style><!--
.hmmessage P
{
margin:0px;
padding:0px
}
body.hmmessage
{
font-size: 10pt;
font-family:Tahoma
}
--></style>
</head>
<body class=3D'hmmessage'><div dir=3D'ltr'>
<h3 style=3D"line-height: 13px; font-size: 13px; font-weight: normal; margi=
n-top: 0px; margin-right: 0px; margin-bottom: 5px; margin-left: 0px; color:=
rgb(63, 68, 72) !important; font-family: Arial, Helvetica, sans-serif; bac=
kground-color: rgb(255, 255, 255); padding-top: 0px; padding-right: 0px; pa=
dding-bottom: 0px; padding-left: 0px; font: normal normal bold 13px/13px Ar=
ial, Helvetica, sans-serif; "><span class=3D"Apple-style-span" style=3D"col=
or: rgb(42, 42, 42); font-weight: normal; line-height: 17px; ">EVANSTON, Il=
l. (UPI) -- U.S. researchers at Northwestern University say they've created=
batteries for portable devices that charge faster and last 10 times longer=
.</span><span class=3D"Apple-style-span" style=3D"color: rgb(42, 42, 42); f=
ont-weight: normal; line-height: 17px; "> </span></h3><div style=3D"li=
ne-height: 17px; color: rgb(42, 42, 42); font-family: Arial, Helvetica, san=
s-serif; background-color: rgb(255, 255, 255); "><br>By combining two metho=
ds, Professor Harold Kung and his team members created lithium-ion batterie=
s they said could make a smartphone run for a week on an 8-minute charge, t=
he Chicago Sun-Times reported Friday. <br><br>The batteries, still two=
to five years from commercial production, could transform the electric-veh=
icle industry, which is hampered by limited mileage ranges and lengthy char=
ging times, Kung said. <br><br>Conventional lithium-ion batteries char=
ge by sending lithium ions between the two ends of the battery, the anode a=
nd the cathode. By sandwiching a layer of silicone between the graphene she=
ets used to construct the anode, the battery can reliably hold far more lit=
hium ions, increasing its capacity, Kung said. <br><br>And by making t=
iny holes in the graphene sheets, the ions can travel back to the anode mor=
e quickly, drastically reducing the recharging time, he said. <br><br>=
"The challenge to supply and store energy in an clean and sustainable way i=
s very exciting and important," he said. <br><br>"We just need to take=
one or two more steps down the road," he said. <br><br></div><div sty=
le=3D"line-height: 17px; color: rgb(42, 42, 42); font-family: Arial, Helvet=
ica, sans-serif; background-color: rgb(255, 255, 255); padding-top: 6px; pa=
dding-right: 0px; padding-bottom: 6px; padding-left: 0px; ">Copyright 2011 =
by United Press International</div> =09=09 =09 =09=09 </div></body>
</html>
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