Battery Power - Spring 2016 - (Page 36)

Industry News New Flow Battery Offers Lower-Cost Energy Storage Energy storage system owners could see significant savings from a new flow battery technology that is projected to cost 60 percent less than today's standard flow batteries. The organic aqueous flow battery is expected to cost $180 per kilowatthour once the technology is fully developed. The lower cost is due to the battery's active materials being inexpensive organic molecules, compared to the commodity metals used in today's flow batteries. "Moving from transition metal elements to synthesized molecules is a significant advancement because it links battery costs to manufacturing rather than commodity metals pricing" said Imre Gyuk, energy storage program manager for the Department of Energy's Office of Electricity Delivery and Energy Reliability (OE), which funded this research. "The battery's water-based liquid electrolytes are also designed to be a drop-in replacement for current flow battery systems," said PNNL materials scientist Wei Wang, one of the paper's corresponding authors. "Current flow battery owners can keep their existing infrastructure, drain their more expensive electrolytes and replace them with PNNL's electrolytes." PNNL researcher Xiaoliang Wei prepares a small demonstration organic flow battery. Flow batteries generate power by pumping liquids from external tanks into a central stack. The tanks contain liquid electrolytes that store energy. When energy is needed, pumps move the electrolytes from both tanks into the stack where electricity is produced by an electrochemical reaction. Both flow and solid batteries, such as the lithium-ion batteries that power most electric vehicles and smartphones today, were invented in the 1970s. Lithium-ion batteries can carry much more energy in a smaller space, making them well suited for mobile uses. The technology gained market acceptance quickly, for both mobile uses like cell phones and larger, stationary uses like supporting the power grid. Lithium-ion batteries now make up about 70 percent of the world's working, grid-connected batteries, according to data from DOE-OE's Global Energy Storage Database. However issues with performance, safety and lifespan can limit the technology's use for stationary energy storage. Flow batteries, on the other hand, store their active chemicals separately until power is needed, greatly reducing safety concerns. Vanadium-based flow batteries have become more popular in recent years, especially after PNNL developed a new vanadium battery design in 2011 that increased storage capacity by 70 percent. Three different companies have licensed the technology behind PNNL's vanadium design. Nearly 79 percent of the world's working flow batteries are vanadium-based, according to data from the Global Energy Storage Database. While vanadium chemistries are expected to be the standard for some time, future flow battery cost reductions will require less expensive alternatives such as organics. PNNL's new flow battery features two main electrolytes: a methyl viologen anolyte (negative electrolyte) and a 4-hydroxy2,2,6,6-tetramethylpiperidin-1-oxyl, or 4-HO-TEMPO catholyte 36 Battery Power * Spring 2016 PNNL's all-organic aqueous flow battery uses two inexpensive and readily available electrolytes, one containing methyl viologen and another with 4-HO-TEMPO. www.BatteryPowerOnline.com http://www.BatteryPowerOnline.com

Table of Contents for the Digital Edition of Battery Power - Spring 2016

Editor's Choice
Reducing TCO with the Right UPS Architecture and Operating Mode
Decades of Data: Using Analytics to Predict the Future
Top Four Considerations for Battery Management in a Connected World
Conference Preview
Designing and Managing Custom Battery Pack Plastic Enclosures
Assessment of Performance and Safety on Lithium Ion Pouch Battery Under Various Test Conditions
Batteries
ICs & Semiconductors
Charging & Testing
Industry News
Calendar of Events

Battery Power - Spring 2016

https://www.nxtbook.com/nxtbooks/webcom/batterypower_2017spring
https://www.nxtbook.com/nxtbooks/webcom/batterypower_2016winter
https://www.nxtbook.com/nxtbooks/webcom/batterypower_2016fall
https://www.nxtbook.com/nxtbooks/webcom/batterypower_2016summer
https://www.nxtbook.com/nxtbooks/webcom/batterypower_2016spring
https://www.nxtbook.com/nxtbooks/webcom/batterypower_2015winter
https://www.nxtbook.com/nxtbooks/webcom/batterypower_2015fall
https://www.nxtbook.com/nxtbooks/webcom/batterypower_2015summer
https://www.nxtbook.com/nxtbooks/webcom/batterypower_2015spring
https://www.nxtbook.com/nxtbooks/webcom/batterypower_2014fall
https://www.nxtbook.com/nxtbooks/webcom/batterypower_2014summer
https://www.nxtbook.com/nxtbooks/webcom/batterypower_2014spring
https://www.nxtbook.com/nxtbooks/webcom/batterypower_2014winter
https://www.nxtbook.com/nxtbooks/webcom/batterypower_20131112
https://www.nxtbook.com/nxtbooks/webcom/batterypower_20130910
https://www.nxtbook.com/nxtbooks/webcom/batterypower_20130708
https://www.nxtbook.com/nxtbooks/webcom/batterypower_20130506
https://www.nxtbook.com/nxtbooks/webcom/batterypower_20130304
https://www.nxtbook.com/nxtbooks/webcom/batterypower_20130102
https://www.nxtbook.com/nxtbooks/webcom/batterypower_20121112
https://www.nxtbook.com/nxtbooks/webcom/batterypower_20120910
https://www.nxtbook.com/nxtbooks/webcom/batterypower_20120506
https://www.nxtbook.com/nxtbooks/webcom/batterypower_20120304
https://www.nxtbook.com/nxtbooks/webcom/batterypower_20120102
https://www.nxtbook.com/nxtbooks/webcom/batterypower_20111112
https://www.nxtbook.com/nxtbooks/webcom/batterypower_20110910
https://www.nxtbookmedia.com