News tagged with anode
New nanostructure for batteries keeps going and going
(Phys.org) -- For more than a decade, scientists have tried to improve lithium-based batteries by replacing the graphite in one terminal with silicon, which can store 10 times more charge. But after just a ...
May 11, 2012 |
4.8 / 5 (67) |
28
|
Mystery of car battery's current solved
(PhysOrg.com) -- Chemists have solved the 150 year-old mystery of what gives the lead-acid battery, found under the bonnet of most cars, its unique ability to deliver a surge of current.
Dec 19, 2011 |
4.7 / 5 (28) |
15
|
New charging method could greatly reduce battery recharge time
(PhysOrg.com) -- Part of the headache of having to constantly recharge batteries is not just how often they need to be charged, but also the time it takes to charge them. In a new study, researchers have proposed ...
Mar 11, 2010 |
4.7 / 5 (25) |
14
|
'Nanoscoops' could spark new generation of electric automobile batteries
An entirely new type of nanomaterial developed at Rensselaer Polytechnic Institute could enable the next generation of high-power rechargeable lithium (Li)-ion batteries for electric automobiles, as well as ...
Nanotechnology / Nanomaterials
Jan 04, 2011 |
4.7 / 5 (24) |
15
|
Using carbon nanotubes in lithium batteries can dramatically improve energy capacity
Batteries might gain a boost in power capacity as a result of a new finding from researchers at MIT. They found that using carbon nanotubes for one of the battery's electrodes produced a significant increase — up to tenfold ...
Nanotechnology / Nanomaterials
Jun 20, 2010 |
4.7 / 5 (22) |
6
|
Lithium-ion anode uses self-assembled nanocomposite materials to increase capacity
A new high-performance anode structure based on silicon-carbon nanocomposite materials could significantly improve the performance of lithium-ion batteries used in a wide range of applications from hybrid ...
Nanotechnology / Nanomaterials
Mar 15, 2010 |
4.9 / 5 (20) |
9
|
Rechargeable lithium-sulfur batteries get a boost from graphene
(PhysOrg.com) -- By wrapping tiny sulfur particles in graphene sheets, researchers from Stanford University have synthesized a promising cathode material for rechargeable lithium-sulfur batteries that could ...
Nanotechnology / Nanomaterials
Jul 13, 2011 |
4.2 / 5 (22) |
53
|
Increasing Electric Car Battery Performance
(PhysOrg.com) -- Researchers have found that by replacing conventional graphite electrodes with silicon nanotube electrodes, lithium-ion batteries can store 10 times more charge.
Nanotechnology / Nanomaterials
Sep 23, 2009 |
4.5 / 5 (20) |
10
Batteries get a quick charge with new anode technology
(PhysOrg.com) -- A breakthrough in components for next-generation batteries could come from special materials that transform their structure to perform better over time.
Nanotechnology / Nanomaterials
Nov 03, 2011 |
4.7 / 5 (19) |
24
Liquid-OLED Offers More Light-Emitting Possibilities
(PhysOrg.com) -- As organic light-emitting diodes (OLEDs) are poised to go mainstream in the near future, scientists continue to explore new twists on the technology. Recently, researchers have fabricated ...
Aug 14, 2009 |
4.8 / 5 (18) |
1
New technology improves both energy capacity and charge rate in rechargeable batteries
Imagine a cellphone battery that stayed charged for more than a week and recharged in just 15 minutes. That dream battery could be closer to reality thanks to Northwestern University research.
Nov 14, 2011 |
4.8 / 5 (18) |
17
|
Lithium-air batteries' high energy density could extend range of electric vehicles
(PhysOrg.com) -- For today's electric vehicles that run on lithium-ion batteries, one of the biggest downsides is the limited range between recharging. Over the past several years, researchers have been working ...
Technology / Energy & Green Tech
Feb 01, 2011 |
4.3 / 5 (19) |
8
|
A new generation of power: Hi-tech rechargeable batteries developed for military
Scientists reported progress today in using a common virus to develop improved materials for high-performance, rechargeable lithium-ion batteries that could be woven into clothing to power portable electronic ...
Technology / Energy & Green Tech
Aug 23, 2010 |
3.4 / 5 (24) |
12
|
Chinese team develop fuel cell that can clean water as it generates electricity
(PhysOrg.com) -- Yanbiao Liu and his colleagues from Shanghai Jiao Tong University, have succeeded in building a device capable of both cleaning wastewater and producing electricity from it. Using light as ...
Aug 19, 2011 |
4.9 / 5 (16) |
6
|
Fuel cells get up to speed with a new kind of platinum
A new form of platinum that could be used to make cheaper, more efficient fuel cells has been created by researchers at the Department of Energy's SLAC National Accelerator Laboratory and the University of ...
Apr 26, 2010 |
4.9 / 5 (13) |
0
|
Anode
An anode is an electrode through which electric current flows into a polarized electrical device. Mnemonic: ACID (Anode Current Into Device). Electrons flow in the opposite direction to the electric current (flow of hypothetical positive charge)
A widespread misconception[citation needed] is that anode polarity is always positive. This is often incorrectly inferred from the correct fact that in all electrochemical devices negatively charged anions move towards the anode (hence their name) and/or positively charged cations move away from it. In fact anode polarity depends on the device type, and sometimes even in which mode it operates, as per the above electric current direction-based universal definition. Consequently, as can be seen from the following examples, in a device which consumes power the anode is positive, and in a device which provides power the anode is negative:
An electrode through which current flows the other way (out of the device) is termed a cathode.
For more information about Anode, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
