November 28, 2021 UMD Home FabLab AIMLab



A research team in the University of Maryland (UMD) Department of Chemical and Biomolecular Engineering (ChBE) has achieved another breakthrough in metallic zinc battery chemistry – after innovating a zinc-air battery cathode reported in Science earlier this year – this time specific to the anode.

The team, led by UMD Professor Chunsheng Wang, created a fluorinated interphase, which enables reversible water-based zinc battery chemistries. Longsheng Cao (ChBE Post-doc), Dan Li (ChBE Post-doc) and Travis Pollard (U.S. Army Research Lab) served as first authors on the study, published in Nature Nanotechnology on May 10.

"Metallic zinc is a supreme anode because it boasts high capacity, low redox potential, high abundance and low toxicity," said Cao. "It's also incredibly safe, but suffers from severe irreversibility -- for example, we often see dendrite growth and low coulombic efficiency in aqueous electrolytes, which makes the formation of a solid-electrolyte interphase [SEI] impossible."

To that end, the Wang group created a diluted and acidic water electrolyte, with an alkylammonium salt additive, which gave way to the formation of a robust and waterproof SEI. This chemistry offers dendrite-free zinc plating and stripping at nearly 100% coulombic efficiency.

The SEI, mainly composed of hydrophobic inorganic fluoride, allows zinc ions to move back and forth, blocks water penetration, and prevents electron transfer. Such chemistry prohibits electrolyte or zinc anode consumption, which enables long-term use of aqueous zinc batteries.

This study continues research progress in the zinc battery including air cathode, electrolytes, organic electrolyte coatingSEI design, and MnO2 cathodes.

For additional information:

Cao, L., Li, D., Pollard, T., Deng, T., Wang, C. et al. (10 May 2021). Fluorinated interphase enables reversible aqueous zinc battery chemistries, Nature Nanotechnology. DOI: 10.1038/s41565-021-00905-4.



Related Articles:
Multi-institutional Research Team Documents Quantum Melting of Wigner Crystals
Maryland Scientists Synthesize Metallic Glass Nanoparticles via High Temperature Thermal Shock
Maryland Engineers Open Door to Big New Library of Tiny Nanoparticles
A Paradigm Shift in Nanochannel Research
UMD Research Team Advances the Battery Revolution
Joy Chao Receives 2020 MRS Silver Graduate Student Award
Micro-reactor Produces Quality Nanoparticles
High Temperature Thermal Shocks Increase Stability of Single Atom Catalysts
Marina Leite to Give a Plenary Talk at International Conference in Belgium
Gary Rubloff keynote speaker at IEEE nanotechnology conference

May 10, 2021


«Previous Story  

 

 

Current Headlines

Postdoc Candidate Sought at Naval Research Laboratory

UMD Scientists Convert Methane without Greenhouse Gas Emissions

Wood That Can Cut Like Steel, Be Molded Like Plastic or Build Batteries?

UMD-Led Team Wins NSF Award for Rapid Materials Design

Expanded Wood Fiber for High-Performance Solid-State Paper Batteries

USMSM Debuts SMART Innovation Center

Incentive Awards Program, Engineering Lab Building Named for Mote

Improving Disaster Communication for Marginalized Communities

Rosemary Parker Honored with President's Distinguished Service Award

College Park-born Quantum Firm IonQ Goes Public

 

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