Tech

June 5, 2012

Army scientists energize battery research

Tags:
by David McNally
Adelphi, Md.

Army Research Laboratory scientist, is one of the inventors responsible for a 30-percent increase in energy density in lithium batteries.

Army scientists are squeezing more power from batteries by developing new methods and materials with incredible results.

“Our battery group has recently developed some new materials that could potentially increase the energy density of batteries by 30 percent,” said Cynthia Lundgren, electrochemical branch chief at the U.S. Army Research Laboratory.

This small group of scientists work on energy and power solutions for America’s soldiers.

“This 30 percent is actually quite a big deal. Typically improvements range about one percent a year with a few step changes,” Lundgren said.

For years, researchers studied how batteries work. They looked at how each component reacts with another. At high voltages batteries are extremely energetic systems.

Doctoral student Josh Allen (right) works with Army Research Laboratory scientist Arthur Cresce in the Electrochemistry Branch. Cresce is the co-inventor of an electrolyte additive with the potential to increase lithium battery energy density by 30 percent.

“There has never been a battery, a single cell, that operated at five volts,” Lundgren explained. “Through our understanding of that interface, we were able to design an additive that you add into the electrolyte that is somewhat of a sacrificial agent. It preferentially reacts with the electrode and forms a stable interface. Now the battery is able to operate at five volts.”

Scientists are calling the additive a major step forward. Since Army researchers Kang Xu and Arthur Cresce designed the substance two years ago, the lab has filed patent applications.

This is what you would call a quantum leap,” Cresce said. “We’ve gone from circling around a certain type of four volt energy for quite a while. All of a sudden a whole new class of batteries and voltages are open to us. The door is open that was closed before.”

Army research has the potential to reduce battery weight and allow soldiers to carry more ammunition or water.

“Our goal is to make things easier for the Soldier,” Lundgren said. “This research started because of the Army’s unique needs. There is a huge investment in batteries.”

In the future, Lundgren hopes they just don’t make better materials, but rather design new types of energy devices undreamt of today.

“We’re looking at designing systems to allow for ubiquitous energy – energy anywhere for the soldier using indigenous sources,” Lundgren said. “Some of our new programs are looking at how we may make fuel out of water. For instance, can we split water and make hydrogen to be used as fuel in a fuel cell or small engine?”

Lundgren said future advances will occur with the right resources.

“The laboratory gives us really good resources, but our highest value resource is our scientists,” she said. “We have an exceptional group of scientists here. We’ve been able to retain them. They have been sought after by many people. But, they’re ability to do good research here, research that can make a difference has allowed us to attract and retain really top talent.”

Emily Wikner, an Army Research Laboratory intern, assists in battery research. She will be a junior this year at Wake Forest University in Winston-Salem, N.C.




All of this week's top headlines to your email every Friday.


 
 

 

Headlines August 28, 2015

Business: Rafale, Mistral on agenda for Le Drian in Malaysia, India¬†– French Defense Minister Jean-Yves Le Drian is due to visit Malaysia Aug. 30, with talks expected to cover the Rafale fighter jet and Mistral helicopter carrier, website La Tribune reported. U.S. Army to choose new landing craft next year¬†– In line with the Pentagon’s...
 
 

News Briefs August 28, 2015

Boeing plans to lay off some Southern California workers Boeing has announced that it plans to lay off employees at its Southern California-based satellite division. The Los Angeles Times reports that the aerospace giant said Aug. 25 that it will lay off as many as several hundred employees at the El Segundo factory. Boeing says...
 
 

Special tactics Airmen killed in hostile incident

Two special tactics airmen, who were deployed in support of Operation Freedom’s Sentinel, were killed near Camp Antonik, Afghanistan, Aug. 26. Capt. Matthew D. Roland, 27, and SSgt. Forrest B. Sibley, 31, were at a vehicle checkpoint when two individuals wearing Afghan National Defense and Security Forces uniforms opened fire on them. NATO service members...
 

 

Hurricane Hunters to fly Tropical Storm Erika

The Air Force Reserve Hurricane Hunters are operating out of Homestead Air Reserve Base, Fla., flying their state-of-the-art WC-130J Super Hercules into Tropical Storm Erika in support of the National Hurricane Center in Miami. The 53rd Weather Reconnaissance Squadron flew four missions into the tropical storm from their deployed location at St. Croix in the...
 
 
LM-MUOS

U.S. Navy, Lockheed Martin ready to launch MUOS-4 Aug. 31

The U.S. Navy and Lockheed Martin are ready to launch the fourth Mobile User Objective System secure communications satellite, MUOS-4, from Cape Canaveral Air Force Station, Fla., Aug. 31 aboard a United Launch Alliance Atlas V...
 
 

Pentagon probing alleged distorting of war intelligence

The Pentagon’s inspector general is investigating an allegation that the military command overseeing the anti-Islamic State campaign distorted or altered intelligence assessments to exaggerate progress against the militant group, a defense official said Aug. 26. The official was not authorized to discuss the probe publicly and so spoke on condition of anonymity. The investigation was...
 




0 Comments


Be the first to comment!


Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>