Featured Research

from universities, journals, and other organizations

Flexible Battery Power

Date:
March 24, 2007
Source:
Royal Society Of Chemistry
Summary:
A paper-like, polymer based rechargeable battery has been made by Japanese scientists. With recent advances in the technology of portable electronic devices, there is a demand for flexible batteries to power them.

A paper-like polymer based rechargeable battery.
Credit: Image courtesy of Waseda University

A paper-like, polymer based rechargeable battery has been made by Japanese scientists.

Related Articles


With recent advances in the technology of portable electronic devices, there is a demand for flexible batteries to power them.

Drs Hiroyuki Nishide, Hiroaki Konishi and Takeo Suga at Waseda University have designed the battery - which consists of a redox-active organic polymer film around 200 nanometres thick. Nitroxide radical groups are attached, which act as charge carriers.

The battery has a high charge/discharge capacity because of its high radical density.

Dr Nishide said: "This is just one of many advantages the 'organic radical' battery has over other organic based materials which are limited by the amount of doping.

"The power rate performance is strikingly high - it only takes one minute to fully charge the battery. And it has a long cycle life, often exceeding 1,000 cycles."

The team made the thin polymer film by a solution-processable method - a soluble polymer with the radical groups attached is "spin-coated" onto a surface. After UV irradiation, the polymer then becomes crosslinked with the help of a bisazide crosslinking agent.

A drawback of some organic radical polymers is the fact they are soluble in the electrolyte solution which results in self-discharging of the battery - but the polymer must be soluble so it can be spin-coated.

However, the photocrosslinking method used by the Japanese team overcomes the problem and makes the polymer mechanically tough.

Dr Nishide said: "This has been a challenging step, since most crosslinking reactions are sensitive to the nitroxide radical."

Professor Peter Skabara, an expert in electroactive materials at the University of Strathclyde , praised the high stability and fabrication strategy of the polymer-based battery.

He said: "The plastic battery plays a part in ensuring that organic device technologies can function in thin film and flexible form as a complete package."

Dr Nishide envisages that the organic radical battery could be used in pocket-sized integrated circuit cards, used for memory storage and microprocessing, within the next three years.

He said: "In the future, these batteries may be used in applications that require high-power capability rather than high-energy density, such as a battery in electronic devices and motor drive assistance in electric vehicles."

The news is reported in the latest edition of the Royal Society of Chemistry journalChemical Communications.


Story Source:

The above story is based on materials provided by Royal Society Of Chemistry. Note: Materials may be edited for content and length.


Cite This Page:

Royal Society Of Chemistry. "Flexible Battery Power." ScienceDaily. ScienceDaily, 24 March 2007. <www.sciencedaily.com/releases/2007/03/070323141052.htm>.
Royal Society Of Chemistry. (2007, March 24). Flexible Battery Power. ScienceDaily. Retrieved November 23, 2014 from www.sciencedaily.com/releases/2007/03/070323141052.htm
Royal Society Of Chemistry. "Flexible Battery Power." ScienceDaily. www.sciencedaily.com/releases/2007/03/070323141052.htm (accessed November 23, 2014).

Share This


More From ScienceDaily



More Matter & Energy News

Sunday, November 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Microsoft Adds Robot Guards, Ushers In Sci-Fi Apocalypse

Microsoft Adds Robot Guards, Ushers In Sci-Fi Apocalypse

Newsy (Nov. 23, 2014) Microsoft has robotic security guards working at its Silicon Valley Campus. Video provided by Newsy
Powered by NewsLook.com
Toyota's Hydrogen Fuel-Cell Green Car Soon Available in the US

Toyota's Hydrogen Fuel-Cell Green Car Soon Available in the US

AFP (Nov. 21, 2014) Toyota presented its hydrogen fuel-cell compact car called "Mirai" to US consumers at the Los Angeles auto show. The car should go on sale in 2015 for around $60.000. It combines stored hydrogen with oxygen to generate its own power. Duration: 01:18 Video provided by AFP
Powered by NewsLook.com
Google Announces Improvements To Balloon-Borne Wi-Fi Project

Google Announces Improvements To Balloon-Borne Wi-Fi Project

Newsy (Nov. 21, 2014) In a blog post, Google said its balloons have traveled 3 million kilometers since the start of Project Loon. Video provided by Newsy
Powered by NewsLook.com
Raw: Paralyzed Marine Walks With Robotic Braces

Raw: Paralyzed Marine Walks With Robotic Braces

AP (Nov. 21, 2014) Marine Corps officials say a special operations officer left paralyzed by a sniper's bullet in Afghanistan walked using robotic leg braces in a ceremony to award him a Bronze Star. (Nov. 21) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Space & Time

Matter & Energy

Computers & Math

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins