June 16, 2021 UMD Home FabLab AIMLab


Work conducted by ISR Director Reza Ghodssi (ECE/ISR) and his research team at the Nanostructures for Electrical Energy Storage Energy Frontier Research Center (NEES EFRC) was profiled in the July 2014 issue of the U.S. Department of Energy?s online Energy Frontier Research Centers newsletter, Frontiers in Energy Research.

"A MEMS platform for in situ, real-time monitoring of electrochemically induced mechanical changes in lithium-ion battery electrodes" appeared in the Journal of Micromechanics and Microengineering. The authors were Ghodssi and his students and postdocs Ekaterina Pomerantseva, Hyun Jung, Markus Gnerlich, Sergio Baron and Konstantinos Gerasopoulos.

The research is an optical-based method to detect changes in the volume of a silicon anode as lithium ions move in and out. These changes in size are related to stress in the active battery material.

The method involves forming a battery underneath a miniature drum. As lithium ions are cycled in and out of a silicon anode, the resulting expansion and contraction of the silicon is measured from the constructive and destructive interference of light incident and reflected off the drum. A control experiment allowed the correlation to be made between the deflection of the drum and the stress in the battery.

The research enables real-time monitoring of lithium-ion battery expansion and contraction and the resulting internal stress. It will enable future researchers to rapidly study and screen materials being considered for lithium-ion batteries.

The Frontiers in Energy Research story was written by Jimmy O?Dea, a postdoc in the Energy Materials Center at Cornell University.

| Read about the research at the Frontiers in Energy Research website |



Related Articles:
Ghodssi, Beyaz, Waits issued US patent for microgenerator
Micro-turbine research on cover of Journal of Micromechanics and Microengineering
Micro-turbo-generator research featured in Journal of Microelectromechanical Systems
Hierarchical three-dimensional electrode paper featured in ACS Nano
New MEMS handbook is comprehensive, practical resource for academics, engineers, students
Micro-ball bearing research featured in Micro Manufacturing magazine
Building Energy Innovation in Maryland
Lemonade from lemons: Despite COVID-19 sidelining of MEMS showcase, proceedings and papers quickly published
New government partner joins UMD’s Center for Research in Extreme Batteries
ARL to Fund $30M in Equipment Innovations for Service Members

August 5, 2014


«Previous Story  

 

 

Current Headlines

Postdoc Candidate Sought at Naval Research Laboratory

Eric Wachsman Elected President of Electrochemical Society

UMD, UMBC, ARL Announce Cooperative Agreement to Accelerate AI, Autonomy in Complex Environments

Liangbing Hu Named 2021/2022 Distinguished Scholar-Teacher

'Fluorinated interphase' bolsters water-based zinc battery chemistry

Engineering at Maryland magazine celebrates 40 Years of the Center for Minorities in Science and Engineering

Engineering Undergrads Recognized for Excellence

Eric Marksz Awarded Charles A. Caramello Distinguished Thesis Award

Building Energy Innovation in Maryland

A Paradigm Shift in Nanochannel Research

 

Colleges A. James Clark School of Engineering
The College of Computer, Mathematical, and Natural Sciences

Communicate Join Email List
Contact Us
Follow us on TwitterTwitter logo

Links Privacy Policy
Sitemap
RSS

Copyright The University of Maryland University of Maryland
2004-2021