- As a continued effort to make Zn metal anode reversible at lower cost, researchers at ARL explored a new supporting salt based on ammonium salt to alter the interfacial structure and interphasial chemistries.
- The salt was synthesized at ARL and much cheaper than the phosphonium salt used in the prior work.
- Zn reversibility is significantly enhanced with HER suppressed, as evidenced by widened electrochemical stability window and improved Coulombic efficiency.
- The interphase chemistry brought by this ammonium salt allows a Na2V6O16-1.63H2O/Zn cell with >1,000 cycle lifetime.
- Modeling reveals a reaction pathway forming an interphase comprising ZnF2, ZnCO3, and fluoro-polymeric species.
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You’re Invited - JCESR and Beyond: Translating the Basic Science of Batteries
Please join us at Argonne National Laboratory on Tuesday, April 4, 2023 for JCESR and Beyond: Translating the Basic Science of Batteries. Registration is now open. This in-person event will celebrate 10 years of research from the Joint Center… Read More
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A Message from JCESR: In Memory of George Crabtree
It is with heavy hearts that we say goodbye to George Crabtree, a Senior Scientist and Distinguished Fellow at Argonne National Laboratory, and Director of the Joint Center for Energy Storage Research (JCESR), who passed away unexpectedly on January 23. Dr. Read More
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Cyanopyridines As Extremely Low-Reduction-Potential Anolytes for Nonaqueous Redox Flow Batteries
Discovery of a cyanophenylpyridine derivative with a very low reduction potential and good stability during cycling. Read More
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Characterizing Redoxmer – Electrode Kinetics Using a SECM-Based Spot Analysis Method
Identified asymmetries in electron transfer (ET) kinetics between the reduction and oxidation of ferrocene-based redoxmers by measuring the ET rate constants (kf/kb) as a function of electrode potential. Read More
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Benzotriazoles as Low Potential Anolytes for Non-Aqueous Redox Flow Batteries
We developed an easy-to-synthesize benzotriazole-based anolyte with a high energy redox potential (-2.3 V vs Fc/Fc+) and high solubility that demonstrates stable electrochemical cycling performance. Read More