New ternary complexes of zinc ions with glycine and histidine in solution

Пырэу, Д. Ф.; Alekseeva, E. S.; Gridchin, S. N.

doi:10.1016/j.tca.2019.178335

Cited by 4 publications

(2 citation statements)

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“…Notably, Gly was regarded as a neutral molecule (Gly) or an anion (Gly − ) in the calculation model according to the experimental analysis and existing literatures. [ 29 ] In the Figure 2d, the BE value of [Zn(H 2 O) 6 ] 2+ is calculated to be −8.26 eV which is lower than that of the [Zn(H 2 O) 5 (Gly)] 2+ (−8.66 eV) and [Zn(H 2 O) 4 (Gly − )] + (−9.05 eV) species. In fact, the higher BE is advantageous for additive to exchange H 2 O molecule from the solvation sheath.…”

Section: Resultsmentioning

confidence: 94%

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Electrolyte Regulation of Bio‐Inspired Zincophilic Additive toward High‐Performance Dendrite‐Free Aqueous Zinc‐Ion Batteries

Gou

Luo

Zhang

et al. 2023

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Aqueous zinc‐ion batteries hold attractive potential for large‐scale energy storage devices owing to their prominent electrochemical performance and high security. Nevertheless, the applications of aqueous electrolytes have generated various challenges, including uncontrolled dendrite growth and parasitic reactions, thereby deteriorating the Zn anode's stability. Herein, inspired by the superior affinity between Zn2+ and amino acid chains in the zinc finger protein, a cost‐effective and green glycine additive is incorporated into aqueous electrolytes to stabilize the Zn anode. As confirmed by experimental characterizations and theoretical calculations, the glycine additives can not only reorganize the solvation sheaths of hydrated Zn2+ via partial substitution of coordinated H2O but also preferentially adsorb onto the Zn anode, thereby significantly restraining dendrite growth and interfacial side reactions. Accordingly, the Zn anode could realize a long lifespan of over 2000 h and enhanced reversibility (98.8%) in the glycine‐containing electrolyte. Furthermore, the assembled Zn||α‐MnO2 full cells with glycine‐modified electrolyte also delivers substantial capacity retention (82.3% after 1000 cycles at 2 A g‐1), showing promising application prospects. This innovative bio‐inspired design concept would inject new vitality into the development of aqueous electrolytes.

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Section: Resultsmentioning

confidence: 94%

“…[ 5,27 ] As the additive concentration increases, the pH value of electrolyte is gradually reduced, verifying that the ionization reactions of Gly preferentially occurs over hydrolysis reactions. [ 28,29 ] Therefore, we speculate that Gly additive mainly exists in the form of molecules and anions in the aqueous electrolyte.…”

Section: Resultsmentioning

confidence: 99%