Modulating Zn deposition via ceramic-cellulose separator with interfacial polarization effect for durable zinc anode

Regulating Zinc Deposition Behaviors by the Conditioner of PAN Separator for Zinc‐Ion Batteries

“…Inspired by the exploration of separators in LIBs and Li‐S batteries, functionalized separators can be used to optimize the performance of the battery by such as regulating ion diffusion, [ 10 ] selectively ions‐sieving functions, and creating uniform electric field. [ 11 ] In recent years, fibrous separators prepared by electrospinning technology have been widely used in the research of battery due to their high porosity, excellent ions migration ability, and versatile functionalization, which are instrumental in promoting the homogeneous distribution of electric field lines onto the electrode surface. [ 12 ] Non‐woven fiber films with controllable composition and structure, interconnected pores, large surface area, and high porosity can be prepared by using this technique.…”

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

“…286 (3) A directional electric field is formed around the coating layer during discharging, which rejects a certain amount of SO 4 2− anions via electrostatic repulsion, and the special bonding structures in the coating layer adsorbed water molecules to promote the de-solvation process. 75,287…”

“…Up to now, numerous strategies for alleviating or inhibiting zinc dendrites and side reactions have been proposed, such as introducing protective layers on the zinc anode surface, 65–67 manipulating the crystallographic orientation of zinc deposition, 68,69 modifying the current collectors, 44,70,71 optimizing the internal structure of zinc anodes, 72,73 modifying the separators, 69,74,75 alloying zinc anodes with other chemically inert metals, 52,76 utilizing the zinc metal anode-free “Rocking-chair” batteries, 77,78 and optimizing the electrolytes. 17,79–82 Among these strategies, electrolyte engineering attracts much attention due to the features of facile preparation and cost-effectiveness, mainly including modifying the electrolyte composition, mixing some additives (solutes or solvents) and developing solid-state electrolytes.…”

Zinc Anode for Mild Aqueous Zinc-Ion Batteries: Challenges, Strategies, and Perspectives

“…In addition, with the help of the Maxwell–Wagner polarization effect of ZrO 2 , the composite separator made of cellulose nanofibers and ceramic particles can generate a directional polarization electric field, which can guide uniform Zn deposition, increase ion conductivity, and inhibit anion transfer (Fig. 25 d, e), thereby stabilizing the Zn anode and suppressing side reactions [ 177 ]. As mentioned earlier, low lattice matching can induce the crystal orientation of Zn deposition.…”

“…c Schematic illustration of Zn deposition in the contact region of the modified separator and the anode [ 176 ]. d Schematic illustration for the ZC separator; e Schematic illustration of possible migration process of Zn 2+ when passing through the cellulose and ZC separators [ 177 ]. Copyright 2021, Elsevier …”