Goodbye and good luck to our visiting scholar Dr. Dongjoon Shin!

Local outreach: ViPER graduate students volunteer at Murdock Elementary STEM Night, Spring 2024.

Group dinner with JakerTech visitors, December 2023.

Celebrating Nestor's M.S. graduation, December 2023.

The group assembled after winning DoD Defense University Research Instrumentation Program (DURIP) Grant.

Graduate student Esin Aydemir at work within a glovebox.

A group dinner in honor of the successful Ph.D. defenses of Dr. Zheng Li and Dr. Daniel Gribble, August 2023.

A visit from Dr. Venkataramanan Mahalingam, July 2023.

ViPER Group and Nissan visitors, July 2023.

Prof. Pol with Prof. Ramkrishna.

Graduate student Ethan Adams assembling a battery to test at sub-zero temperatures.

Dinner with Prof. Jeffrey Dick (Purdue Chemistry) and his group.

ViPER Group enjoying the lovely May weather with Prof. Jeffrey Dick (Purdue Chemistry) and his group.

Goodbye and good luck to visiting scholar Murthy!

All smiles at a birthday dinner, Spring 2023.

Murdock STEM Night: Volunteering with K-5 children in the local community in guided construction of penny batteries.

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.

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 Daechol Jeong (co-advised by Dr. Brian Tackett, Purdue CHE) and Jamee Boyer (co-advised by Prof. Alina Alexeenko, Purdue AAE) to the group!

The Vilas Pol Energy Research (ViPER) Group Receives DoD Award for Quasi-Solid State Battery Prototyping Equipment (August 2023). Link

Congratulations to Zheng Li and Daniel Gribble on their successful Ph.D. defenses!

Welcome to Ryan Gallagher to the group in his new role as a project coordinator!

Prof. Pol presented at 40th International Battery Seminar & Exhibit, Orlando, FL, Mar 22, 2023.

Purdue's ViPER group innovates high-energy-density, long cycle-life rechargeable lithium metal batteries, with a new paper in Nature Communications. Link

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.