Highly reversible Zn metal anodes enabled by multifunctional poly zinc acrylate protective coating

Ion Diffusion-Directed Assembly of an Artificial Electronic–Ionic Conductor Layer with Zn-Ion Selective Channels for Highly Reversible Zinc Anodes

“…Based on the initial impedance ( R 0 ) and steady-state impedance ( R ss ) of the symmetrical battery (Figure S11), of 0.83 was calculated for the 2PPZ@Zn electrode, which considerably surpasses that of bare Zn (0.27) and 2PP zinc anode (0.48), as depicted in Figure e, suggesting the construction of selective Zn 2+ transport channels in PPZ ASEI through the use of polyanion. Moreover, the of zinc anodes in this study exceeds that of zinc anodes reported in other literature studies, as demonstrated in Figure f. ,− This high cation-transfer capability could mitigate the concentration gradient between the layers and reduce the concentration of anions. These findings suggest that 2PPZ represents a high Zn 2+ ionic conductive interface, attributed to the unique negative charge of sulfonic acid on the surface and the three-dimensional selective Zn 2+ ion channels, which significantly enhance the adsorption as well as the transfer ability of Zn 2+ cations.…”

Regulating zinc deposition behaviors by using a functional PANI modification layer on a separator for high performance aqueous zinc-ion batteries

“…[1][2][3][4] However, the practical application of AZIBs is limited by the following issues, i.e., the undesirable Coulombic efficiency (CE) and poor cycle life caused by the dendrite growth, and side reactions (hydrogen evolution reaction (HER) and corrosion reaction) of a Zn metal anode. 5,6 In the aqueous electrolyte, the distribution of the electrical eld near the commercial Zn foil surface is uneven, which easily leads to the uncontrolled growth of Zn dendrites at protuberance sites because of the "tip effect" during the zinc deposition process. In addition, the corrosion of Zn metal and the competing HER in an aqueous electrolyte are inevitable, which also facilitate the uneven distribution of the electrical eld and irregular dendrite growth.…”

Advances in polymer electrolytes for solid-state zinc–air batteries

“…By establishing a stable electrolyte environment with additives, charge transfer can be stabilized and uneven deposition of particles can be inhibited, thus reducing dendrite growth and delaying metal passivation. [124][125][126] Hao et al 127 designed a solid polymer film made from polyvinyl butyral (PVB). The polymer film exhibits strong hydrophilicity and conductivity and can achieve good compatibility with zinc and air electrodes.…”