NSF award 2629476 · Virginia Polytechnic Institute and State University

Collaborative Research: Understanding the Reversible Formation of Sodium Hydrosulfide in Hybrid Electrolytes for High-Energy Density Storage

Final report due

28 February 2027

in 133 days · The award ends on 31 October 2026.

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No-cost extension notice21 Oct 2026in 3 days
award ending 2026-10-31 · Research.gov
PAPPG 24-1: “at least ten calendar days prior to the end date”
Final report due28 Feb 2027in 133 days
award ending 2026-10-31 · Research.gov
PAPPG 24-1: “no later than 120-days following the end date of the award”
Project outcomes report due28 Feb 2027in 133 days
award ending 2026-10-31 · Research.gov
PAPPG 24-1: “no later than 120 days following the end date”
Award is closed out28 Feb 2027in 133 days
award ending 2026-10-31 · Research.gov
PAPPG 24-1: “financially closed out 120 days after their expiration date”

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How we got this date

NSF lists this award's end date as 31 October 2026.
NSF rules say the final report is due no later than 120 days after that.
So the final report is due by 28 February 2027.

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Award card

Award number: 2629476
Period of support: 15 Jul 2026 – 31 Oct 2026
Amount: $282,020
Awardee: Virginia Polytechnic Institute and State University, Blacksburg, VA
Program: EchemS-Electrochemical Systems
Directorate: ENG

Abstract

The development of the high-energy density and low-cost sodium-sulfur (Na/S-NaHS) battery technology can potentially have a transformational impact on the nation’s energy security and critical materials supply chain. This will yield new methods and chemistry understanding to enable the use of this battery system in applications requiring more durability and lower-cost including electric vehicles and grid-scale…

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