Reshaping the electrolyte structure and interface chemistry for stable aqueous zinc batteries

Protic ethers as highly efficient hydrogen-bond regulators for aqueous eutectic electrolytes

“…S8 †), indicating a subsequent depletion of electron density around hydrogen atoms due to the signicant incorporation of DME in H-bond structures of DMSO/H 2 O and resulting ALE-DME 6.6 . 16,17 The deshielding effect has also been revealed by 1 H diffusion-ordered NMR spectroscopy (DOSY). The decreased diffusion coefficients of H 2 O and DMSO presented in ALE-DME 6.6 resulted from the reduced molecule numbers and hydrogen atom participation of H 2 O and DMSO in the H-bond complex to accommodate the introduced DME molecules (Fig.…”

“…While DME was acting differently with other solvent types regarding Raman peak shiing, which notably originates from the DN difference modifying interaction among TFSI À , DMSO/H 2 O, and Li + . 17 Moreover, the apparent presence of AGGs in all ALEbased electrolytes identied a dominating ability to reduce "free" water molecules and thus improve water stability. 25 Fig.…”

“…27 Apparently, the substrate of organic solvents in eutectic electrolytes is attributed to the reduction of bulk H 2 O and cluster H 2 O populations, and the isolated water reserved evidently in each eutectic-solvent combination illustrated the scattering state of water molecules due to newly formed H-bond complexes between them. 17 The following studies discuss O-H stretching of the water molecule as well for the three divisions regarding the H-bond strength. Thus, three O-H stretching regimes ascribed to strong H-bonds (i.e., the weakest O-H stretching in the range of 3000-3500 cm À1 ), medium H-bond (i.e., the moderate one in the range of 3500-3600 cm À1 ), and weak H-bond (i.e., the strongest one in range of 3600-3700 cm À1 ).…”

“…S1 †). Among them, DME has been found to be one of the most collaborative organic solvents due to its high salt solubility, good ionic conductivity, and excellent commercial compatibility, which are attractive to exploit in ordinary aqueous electrolytes, 17 ILs, 18 and LHCEs. 19 Following the idea of exploring the functionality and mechanism of solvent-joint eutectic electrolytes, we developed aqueous Li-based eutectic (ALE) electrolytes by adding various organic solvents in AEIS electrolytes with a xed salt concentration.…”

An amphoteric betaine electrolyte additive enabling a stable Zn metal anode for aqueous batteries

“…31 Zhang et al designed aqueous-organic hybrid electrolytes to inhibit side reactions and dendrite formation on Zn. 36,37 Despite the above achievement made with Zn anodes, further studies are still widely required to propose efficient approaches and promote the electrochemical performance.…”