Regulation methods for the Zn/electrolyte interphase and the effectiveness evaluation in aqueous Zn-ion batteries

Abstract

Aqueous Zn-ion batteries (ZIBs) have inspired an overwhelming literature surge due to their safety, cost effectiveness, and environmental benignity. Directly employing metallic Zn foil as anode significantly simplifies battery manufacturing...

Stabilizing Interface pH by N‐Modified Graphdiyne for Dendrite‐Free and High‐Rate Aqueous Zn‐Ion Batteries

“…Meanwhile, the onset potential of Zn deposition is reduced by 31 mV, which benefits from the suppressed deposition polarization by NGDY‐assisted desolvation. To eliminate the influence of Zn deposition on the study of hydrogen evaluation, we also employed Na 2 SO 4 solution as electrolyte to test the LSV curve (Figure S3) [6b] . Similar with the cases using ZnSO 4 electrolyte, the NGDY interface can effectively suppress the parasitic reaction of hydrogen evolution and meanwhile suppress the Zn deposition polarization.…”

A Better Zn-Ion Storage Device: Recent Progress for Zn-Ion Hybrid Supercapacitors

“…Typically, the precipitation/dissolution processes of by-products like Zn 4 SO 4 (OH) 6 ·nH 2 O have been found in the system of ZIBs, especially in the Mn-based and V-based ZIBs [ 87 ]. The by-products with loose and porous layers will randomly form on the surface of bare Zn foil during charging/discharging processes, which leads to the uneven surface and Zn dendrite, then the poor cycling performance of ZIBs [ 194 , 195 ]. Therefore, the investigation of formation mechanisms of the by-products in ZHSCs is more necessary since the Zn anode of ZHSCs can be greatly consumed by the fast charging/discharging processes.…”

Strategies of regulating Zn2+solvation structures for dendrite-free and side reaction-suppressed zinc-ion batteries

“…In addition, the regulation of zinc ion solvation structure will affect the Zn 2+ de-solvation and nucleation process, thus inducing uniform zinc deposition. 58,83 Therefore, a systematic understanding of the functions of those electrolyte engineering technologies and a comprehensive summary on solvation structure regulation strategies can not only provide a timely overview of the latest developments of this important research field, but also offer guidance for rationally designing stable and reversible zinc anodes.…”