A lively group meeting - Winter 2023.

Purdue's ViPER group sets a GUINNESS WORLD RECORDS™ title!

Summer 2022 ViPER Group.

Group meeting with lunch!

ViPER Group 2021 Fall Trip to Brown County State Park.

Assembling a battery to test at sub-zero temperatures.

Summer 2022 Dinner celebrating winning the Trask Innovation Fund for the 4th time.

Prof. Pol at Carbon 2022.

Fall 2021 ViPER Group enjoying the fine weather.


Dr. Peter B. Littlewood, director of Argonne National Laboratory, and the ViPER Group during his visit to Purdue University.


Prof. Pol with Prof. C. N. R. Rao & Prof. Doraiswami Ramkrishna during the reception of the Indo-US S&T Forum.

Prof. Pol with Dr. Dick Wieboldt and Molly Isermann during the DXR Raman Microscope Symposium.

Recent News

Welcome Dr. Sayan Das to the group as a new postdoctoral researcher!

Welcome Hosung Hwang and Ju Hyeong Kim to the group as new visiting scholars!

Congratulations to ViPER team for the GUINNESS WORLD RECORD™ - The Lowest Temperature (-100 Degrees Celsius) to Charge a Lithium-ion Battery!

Welcome Esin Aydemir (UG - Boğaziçi University, Istanbul, Turkey) to the group! Esin is a new PhD student.

Welcome Beichen (David) Xiong (UG - University of Illinois at Urbana-Champaign) to the group! David is a new PhD student.

Congratulations to Harsha Rao (former student and collaborator) on joining ENOVIX Corporation, California.

For more, see our News Archives.


There is a great demand in today's mobile society for a better, longer lasting battery.

The focus of the Vilas Pol Energy Research (ViPER) Group is the design and fabrication of high capacity materials for next generation Lithium-ion, Lithium-Sulfur, and Sodium-ion battery systems.

Our inspiration draws from over 20+ years of combined experience within electrochemistry, nano-technology, interfacial and surface chemistry, chemical engineering, and environmental engineering. Beginning with the simplest chemical precursors, we are able to synthesize revolutionary, next generation materials that are tested for the future of energy storage technology.

The ViPER Group welcomes interested visiting scholars to explore research opportunities in the areas of Lithium-ion, Li-Sulfur, and Sodium-ion batteries. Please submit your request to viper(at)purdue(.)edu.