Saturday, April 19, 2014
Search
  
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
HTC Hired Ex-Samsung Marketing Officer
Xbox One Wolrdwide Sales Cross 5 million
Samsung Works With GLOBALFOUNDRIES On 14 nm FinFET Offering
Facebook To Find Nearby Friends
Console Sales Lift AMD's First Quarter Results
LG Expands 'Second Screen' TV Ecosystem With Open-Source SDK
Amazon Announces Kindle Service For Samsung Devices
Nokia Halts Sales Of Lumia 2520 Tablet
Active Discussions
help questions structure DVDR
Made video, won't play back easily
Questions durability monitor LCD
Questions fungus CD/DVD Media, Some expert engineer in optical media can help me?
CD, DVD and Blu-ray burning for Android in development
IBM supercharges Power servers with graphics chips
Werner Vogels: four cloud computing trends for 2014
Video editing software.
 Home > News > Mobiles > Sharp's...
Last 7 Days News : SU MO TU WE TH FR SA All News

Friday, May 16, 2008
Sharp's Efficient Fuel Cell Technology Could Replace Lithium-ion Batteries


Sharp said Thursday it has developed a technology to produce small fuel cells that have almost the same volume as lithium-ion batteries but a longer continuous lifespan.

The Japanese company claims that it has achieved the world's highest power density, 0.3W/cc, for direct methanol fuel cells (DMFC) for mobile equipment. This new technology enables efficient power generation from a small cell volume. Thus, the use of this technology can make it possible to develop fuel cells that have almost the same volume but a longer continuous-use lifespan than lithium-ion batteries, which are the main type currently in use.

Sharp plans to promote further research and development for the practical application of fuel cells for mobile equipment such as PDAs, electronic dictionaries, and notebook computers.

Fuel cells use energy produced by the chemical reaction between hydrogen and oxygen, meaning that they have a small impact on the global environment. Also, fuel cells are expected to become the next-generation power generating devices because of their high generating efficiency that comes from converting chemical energy directly into electrical energy.

Generally, DMFC have a simple structure in which power is generated through a chemical reaction between methanol supplied directly to the power generation part and oxygen in the air, making them suitable for miniaturization.

However, the relatively low power density of the current DMFCs increases the size of the power generation part and, as a result, increases the total cell volume.

Sharp has developed the three-dimensional highly integrated stack structure through the use of thin cells made using microfabrication techniques. This structure can be created by the alternate lamination of reed-shaped thin cells arranged in parallel at fixed intervals and reed-shaped (porous) spacers, with the cells and spacers running perpendicular to each other like a grid. With this structure, uniform and continuous spaces are secured, making it possible to increase the cell surface area per unit volume and smoothly circulate the air that is one of the sources for power generation.

Sharp said that it has managed to improve power density per unit volume and achieved the world's highest level, 0.3W/cc (about 7 times greater than previous Sharp technology).

The Japanese company believes that in the future, cell volume can be further miniaturized, making them competitive to the currently mainstream lithium-ion batteries, while they will offer a longer lifespan.


Previous
Next
OCZ Introduces Do-It-Yourself Gaming Notebook Solution        All News        IBM Brings Business Intelligence to BlackBerry
RIM to Launch Touch-screen BlackBerry in Q3     Mobiles News      IBM Brings Business Intelligence to BlackBerry

Get RSS feed Easy Print E-Mail this Message

Related News
Sharp Reports Improved Results
Sharp Unveils 15.6-inch Windows 8.1 Tablet, 70-inch Big Pad
Sharp Introduces Quattron+ TVs
Sharp Delivers Wireless Audio and Full HD Video With WiSA-Compliant Universal Player
Sanyo Settles LCD Patent Dispute With Sharp
Sharp Reports Quarterly Profit After Two Years
Sharp Set To Release More Affordable 4K TVs
Sharp to Begin Production of IGZO LCD Panels for Smartphones at Kameyama Plant No. 2
Sharp Showcases Medius Pad Tablet, MEMS Display At CEATEC
Sharp Begins Sample Deliveries of 4K2K IGZO LCD Panels for 15.6-Inch Notebook PCs
Sharp To Offer Monitoring Solutions Through Commercial TVs
Sharp, Samsung Talks Over Copier JV Ended: report

Most Popular News
 
Home | News | All News | Reviews | Articles | Guides | Download | Expert Area | Forum | Site Info
Site best viewed at 1024x768+ - CDRINFO.COM 1998-2014 - All rights reserved -
Privacy policy - Contact Us .