Robust ZnS interphase for stable Zn metal anode of high-performance aqueous secondary batteries

Abstract

Although Zn metal is an ideal anode candidate for aqueous batteries owing to its high theoretical capacity, lower cost, and safety, its service life and efficiency are damaged by severe hydrogen evolution reaction, self-corrosion, and dendrite growth. Herein, a thickness-controlled ZnS passivation layer was fabricated on the Zn metal surface to obtain Zn@ZnS electrode through oxidation-orientation sulfuration by the liquid-and vapor-phase hydrothermal processes. Benefiting from the chemical inertness of the ZnS interphase, the as-prepared Zn@ZnS electrode presents an excellent anti-corrosion and undesirable hydrogen evolution reaction. Meanwhile, the thickness-optimized ZnS layer with an unbalanced charge distribution represses dendrite growth by guiding Zn plating/stripping, leading to long service life. Consequently, the Zn@ZnS presented 300 cycles in the symmetric cells with a 42 mV overpotential, 200 cycles in half cells with a 78 mV overpotential, and superb rate performance in Zn||NH 4 V 4 O 10 full cells.

F‐Doped Carbon Nanoparticles‐Based Nucleation Assistance for Fast and Uniform Three‐Dimensional Zn Deposition

“…Similar results are also reflected on the P‐Ti electrode, in which the atomic proportion of C, Ti, and F elements is 60.9 %, 21.7 %, and 17.4 %, respectively. The high resolution of C 1s is given in Figure 1f , which can be devolved into the C—C and C—F bonds with the binding energies of 285.3 and 289.0 eV, [ 32 ] respectively, in which the intensity of the C—C peak is significantly higher than the C—F peak. Additionally, the Raman spectra of P‐Zn display obvious D and G peaks at 1336.8 and 1599.3 cm −1 , [ 33 ] respectively (Figure S3 , Supporting Information).…”

Nicotinic acid additive with a double regulating mechanism for high-performance aqueous zinc ion batteries

“…in aqueous secondary batteries using aqueous electrolytes in energy storage considering safety and cost issues. [4][5][6][7][8] Among these candidates for aqueous rechargeable batteries, zinc-ion batteries (ZIBs) have received a lot of attention. Aqueous zinc ion batteries, usually referred to as AZIBs, in most cases consist of zinc as the metallic anode, and neutral or weakly acidic waterbased electrolytes.…”

Highly robust zinc metal anode directed by organic–inorganic synergistic interfaces for wearable aqueous zinc battery

“…[9][10][11] Thereinto, artificial solid electrolyte interface (SEI) has been considered as an effective way to protect the zinc anode against them. 12,13 In particular, the inorganic passivation layers (i.e., ZnF 2 , ZnS) with high-efficiency zinc ion conductivity have been uniformly coated on the surface of zinc anode by in situ or ex-situ strategies, 14,15 which could have induced uniform deposition of zinc and broaden HER overpotential. For instance, ZnF 2 -based modified layers on the Zn anode surface using electrodeposition and vacuum pyrolysis have effectively inhibited dendrites and interfacial side reactions, extending the life span of the zinc anode to 590 h 16 ; By introducing the weak solvation effect into the electrolyte, the in situ inorganic-rich SEI can significantly improve the interfacial dynamic of the zinc anode by promoting the migration rate of the Zn 2+ .…”