Featured Research

from universities, journals, and other organizations

High temperature capacitor could pave the way for electric vehicle

Date:
August 6, 2013
Source:
National Physical Laboratory
Summary:
Scientists are working to create electronics capabilities for electric vehicles, with the development of a high temperature capacitor.

Scientists at the National Physical Laboratory are helping to create electronics capabilities for electric vehicles, with the development of a high temperature capacitor.

Electric Vehicles (EV) are hoped to represent more than 50% of worldwide light duty vehicle sales by 2050. The absence of suitable capacitors is one of the major barriers to meeting this goal.

Capacitors are a means of storing energy and are vital to the process of converting DC power from the vehicle battery, into AC power required to drive the motor. Current capacitors do not meet the EV requirements, due to an inability to function reliably under the high temperatures created in electric vehicles.

NPL have overcome this issue, as part of a Technology Strategy Board funded project. The outcome is a capacitor, called HITECA, that can operate close to normal efficiency at over 200oC, significantly higher than any other capacitor on the market. It also offers a high energy density -- the measure of how much energy it can store.

The upshot for the electrical vehicle driver could mean an increased mileage range, reduced maintenance, and an enhanced driving feel.

To develop the capacitor, NPL investigated a range of lead-free materials that could have the desired properties to develop into a high temperature capacitor.

The scientists explored different compositions and different ways of fabricating them. They measured current at a range of high temperatures using advanced measurement techniques. The most promising materials were optimised to achieve the desired properties. The resulting capacitor is created from a ceramic, based on doped-BiFeO3 compound.

Tatiana Correia, lead scientist on the project, said: "The opportunities for electric vehicles are huge, both financially and environmentally, but they are currently being held back by a few technical issues. With this high temperature capacitor we believe we have solved an important one of those issues and will play a vital part in the move towards mass market electric vehicles."

A recent Frost & Sullivan Report shows that capacitors represent a 10bn global market in the automotive industry alone. This capacitor also has huge potential in other areas of high temperature electronics for other industries, for example: pulsed power applications (defibrillators and x-ray generators), energy conversion in photovoltaics and integrated circuits, downhole power electronics in oil and gas industry, which need to work at high temperatures or are subject to overheating.

The project has also allowed NPL to develop a range of new capabilities in metrology to assess energy and power in capacitors across a temperature range, which it will be offering as a new service.

The capacitor was developed as part of the Technology Strategy Board Project, Advanced Capacitors for Energy Storage (ACES). NPL are interested in hearing from industrial partners interested in licensing the innovation. NPL led the project and partners included Queens University of Belfast, Queen Mary University, Syfer and Valeo.


Story Source:

The above story is based on materials provided by National Physical Laboratory. Note: Materials may be edited for content and length.


Cite This Page:

National Physical Laboratory. "High temperature capacitor could pave the way for electric vehicle." ScienceDaily. ScienceDaily, 6 August 2013. <www.sciencedaily.com/releases/2013/08/130806145535.htm>.
National Physical Laboratory. (2013, August 6). High temperature capacitor could pave the way for electric vehicle. ScienceDaily. Retrieved August 23, 2014 from www.sciencedaily.com/releases/2013/08/130806145535.htm
National Physical Laboratory. "High temperature capacitor could pave the way for electric vehicle." ScienceDaily. www.sciencedaily.com/releases/2013/08/130806145535.htm (accessed August 23, 2014).

Share This




More Matter & Energy News

Saturday, August 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Is It a Plane? No, It's a Hoverbike

Is It a Plane? No, It's a Hoverbike

Reuters - Business Video Online (Aug. 22, 2014) UK-based Malloy Aeronautics is preparing to test a manned quadcopter capable of out-manouvering a helicopter and presenting a new paradigm for aerial vehicles. A 1/3-sized scale model is already gaining popularity with drone enthusiasts around the world, with the full-sized manned model expected to take flight in the near future. Matthew Stock reports. Video provided by Reuters
Powered by NewsLook.com
Coal Gas Boom in China Holds Climate Risks

Coal Gas Boom in China Holds Climate Risks

AP (Aug. 22, 2014) China's energy revolution could do more harm than good for the environment, despite the country's commitment to reducing pollution and curbing its carbon emissions. (Aug. 22) Video provided by AP
Powered by NewsLook.com
Former TSA X-Ray Scanners Easily Tricked To Miss Weapons

Former TSA X-Ray Scanners Easily Tricked To Miss Weapons

Newsy (Aug. 21, 2014) Researchers found the scanners could be duped simply by placing a weapon off to the side of the body or encasing it under a plastic shield. Video provided by Newsy
Powered by NewsLook.com
Flower Power! Dandelions Make Car Tires?

Flower Power! Dandelions Make Car Tires?

Reuters - Business Video Online (Aug. 20, 2014) Forget rolling on rubber, could car drivers soon be traveling on tires made from dandelions? Teams of scientists are racing to breed a type of the yellow flower whose taproot has a milky fluid with tire-grade rubber particles in it. As Joanna Partridge reports, global tire makers are investing millions in research into a new tire source. Video provided by Reuters
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:
from the past week

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