Thursday 11th of August 2022

Follow Us

Breaking News

DST-IISc energy storage platform moves towards enabling fast-charging solid-state batteries

(FMNews) -Researchers have reported on an innovative interfacial engineering approach to enable fast charge-discharge rates in solid-state lithium metal batteries. They have found that nanoscopic refractory metal layers like Tungsten could improve the performance of these batteries which are crucial for purposes like electrical mobility.

 Conventional Li-ion batteries employ a graphite anode, a liquid electrolyte, and a transition metal cathode. However, the liquid electrolytes are flammable and degrade at high temperatures leading to poor battery life and in extreme cases lead to battery fires. Replacing the liquid electrolyte in a conventional Li-ion battery with a ceramic solid electrolyte and simultaneously replacing the graphite anode with a metallic lithium anode could enable safer Li-ion batteries that also last long on a single charge.

 However, a long-standing challenge with solid state batteries is the growth of lithium dendrites that short circuits the cells and this is accentuated during fast charging.

 Based on extensive fundamental electrochemical measurements performed over several hundreds of solid-state half cells and subsequent nano-characterization, researchers from the Indian Institute of Science (IISc) realized that dendrite growth was a manifestation of a deeper fundamental process: diffusive growth of lithium voids that are forming during discharge. The researchers identified that the growth of lithium voids during discharge leads to dendrite growth during charge.

 

 

  The team consisting of Vikalp Raj, Victor Venturi, Varun R Kankanallu, Bibhatsu Kuiri, Venkatasubramanian Viswanathan and Naga Phani B Aetukuri found that at the edges of the microscopic voids, Li-ion currents are concentrated. The currents at these edges are around 10000 times larger than average currents in the cell. Hence it is necessary to impede void growth to prevent dendrite growth.

 Experimenting with an ultrathin layer of refractory metals between the lithium anode and the solid electrolyte, the researchers noted that tungsten is an ideal candidate to impede lithium vacancy motion due to its low solubility for lithium and therefore delay void growth. They collaborated with researchers from Carnegie Mellon University to corroborate their work through computational methods.

 Facilities created under the Materials for Energy Conservation and Storage Platform (DST-MECSP) program, Technology Mission Division (Energy, Water and Others), Department of Science and Technology (DST) under the DST-IISc Energy Storage Platform on Supercapacitors and Power Dense Devices has been pivotal in taking the work forward.  The work is published in Nature Materials.

 The researchers acknowledged the support from to Dr. Ranjith Krishna Pai, Scientist ‘E’ (TMD-EWO), DST and (Late) Shri. Dr. Sanjay Bajpai, Former Head (TMD-EWO), DST for conceptualizing this program which brought several essential facilities for energy research under a single roof and Dr. Anita Gupta, Head (TMD-EWO), DST, for extending it.

 The team now intends to build on this advance to develop full solid-state cells that could enable charging in less than an hour, offer up to 1000 or more cycles while withstanding high temperatures of 45 ºC or higher outcompeting conventional Li-ion cells  at a cost that is at par or lower than the cost of conventional Li-ion cells.

Related Science & Tech News

Perseids Meteor Shower on the Way

 Washington, Aug 9, (fast Mail News):-- Usually bringing one of the most vivid annual meteor showers visible in Earth’s night sky, commonly delivering 50-100 “shooting stars” per hour at its height, the Perseids will peak Aug. 12 and 13. There’s just one problem: the ful....

Chandigarh University joins hands with Punjab Remote Sensing Centre for resources management and disaster mitigation

 CHANDIGARH:Marking a revolutionary moment, Chandigarh University, Gharuan has signed an Memorandum of Understanding (MoU) with the Punjab Government's premier enterprise Punjab Remote Sensing Centre (PRSC) Ludhiana to enhance research and academic collaboration for application of Remote Sensin....

Covesting Traders’ Most Anticipated Feature Goes Live On PrimeXBT Android App

 (FMNews)  -The Covesting copy trading module on PrimeXBT has become one of the cryptocurrency market’s most significant sensations. In June alone, a top strategy manager earned over 300% profit, beating out crypto, stocks, energy commodities, currencies, and any other market globall....

Strong Technical Advantages of TANK Platform, GWM TANK300 Will Bring a New Intelligent Off-road Experience

 BAODING:-- The latest batch of GWM TANK300 arrived at the Port of Jeddah, Saudi Arabia, providing consumers with more opportunities to experience and truly feel the technical strength of the GWM TANK Platform.   "GWM's intention behind TANK Platform creation is to provide an uncompro....

Hyderabad-based Quantum Energy forays into electric two-wheelers

 Launched four New Electric Vehicles HYDERABAD:  Quantum Energy showcases its upcoming EV high-speed scooters and signed an MOU with MBI Korea to bring advanced technology into India in high-speed scooters. Quantum Energy is an electric mobility company in the design, development, and manu....

Links
Contact
Editor :
Jagadananda Pradhan
Email :
fastmail@yahoo.com
For Ads :
fastmailads@gmail.com
Ph : (+91)6764295999
Contact Us
© 2022 Fast Mail Media Pvt Ltd. All Rights Reserved.
Powered by : FM Media Pvt Ltd.
Developed by : Futuradept Tech