News tagged with anode
Researchers discover a way to significantly reduce the production costs of fuel cells
Researchers at Aalto University in Finland have developed a new and significantly cheaper method of manufacturing fuel cells. A noble metal nanoparticle catalyst for fuel cells is prepared using atomic layer ...
Technology / Energy & Green Tech
Dec 20, 2011 |
5 / 5 (1) |
0
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
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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
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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
Revolutionary conducting polymer enables silicon use as next generation of lithium-ion battery anodes
Lithium-ion batteries are everywhere, in smart phones, laptops, an array of other consumer electronics, and the newest electric cars. Good as they are, they could be much better, especially when it comes to ...
Nanotechnology / Nanomaterials
Sep 23, 2011 |
4.9 / 5 (10) |
6
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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
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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
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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
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'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
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Platinum-coated nanoparticles could lead to better fuel cells
(PhysOrg.com) -- Fuel cells may power the cars of the future, but it's not enough to just make them work -- they have to be affordable. Cornell researchers have developed a novel way to synthesize a fuel cell ...
Nanotechnology / Nanomaterials
Dec 09, 2010 |
4 / 5 (7) |
0
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NEC develops organic radical battery for practical use
NEC Corporation announced today the development of a thin and flexible Organic Radical Battery (ORB) that is significantly more reliable and produces 1.4 times more output than existing units.
Technology / Energy & Green Tech
Nov 09, 2010 |
4 / 5 (1) |
0
Who killed the graphite anode? Researchers move silicon anode li-ion battery technology forward
(PhysOrg.com) -- Scientists at Pacific Northwest National Laboratory developed a lithium-ion (Li-ion) battery technology with reversible capacity of more than 1,600 milliamp hours per gram (mAh/g) after 40 ...
Oct 11, 2010 |
4.9 / 5 (11) |
6
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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
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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
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Microbe power as a green means to hydrogen production
Scientists have been hard at work harnessing the power of microbes as an attractive source of clean energy. Now, Biodesign Institute at Arizona State University researcher Dr. Prathap Parameswaran and his ...
Technology / Energy & Green Tech
Jun 01, 2010 |
4 / 5 (5) |
1
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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.
