In Situ Constructing Coordination Compounds Interphase to Stabilize Zn Metal Anode for High‐Performance Aqueous Zn–SeS₂ Batteries

Abstract

Aqueous zinc (Zn) metal batteries have been regarded as the most promising aqueous batteries due to their low redox potential, high theoretical capacity, and abundant Zn resources. Unfortunately, Zn dendrite growth and serious side reactions drastically curtail the cycle life, severely affecting their large‐scale application. Herein, a multifunctional ordered Zn‐aminotrimethylene phosphonic acid (Zn‐ATMP) film is in situ modified on the surface of metal Zn via a facile etching process. The modified layer can not only retard the side reactions and suppress the corrosion rate, but also lower the Zn nucleation overpotential and accelerate diffusion and homogenize deposition of Zn2+ due to the strong Zn affinity. Consequently, the as‐prepared Zn‐ATMP@Zn anode in the symmetric cell enables long‐term lifespan (over 1000 h) at 10.0 mA cm−2 with a high areal capacity of 5 mAh cm−2. Furthermore, when assembled with a SeS2‐based cathode, a long lifespan for over 280 cycles at 2 C can be achieved for the aqueous Zn–SeS2 battery. This work provides a reliable strategy for constructing stabilized Zn anode and accelerating the development of an aqueous energy storage system.

Covalent triazine frameworks for advanced energy storage: challenges and new opportunities

“…This approach is similar to the effective components found in the SEI layer on Li metal in LMBs, which facilitate ionic conductivity and prevent electrolyte penetration to improve corrosion resistance. Furthermore, in situ formation of CTFs on Zn metal could provide the Zn anode with better mechanical stability and contact adhesion, 163,164 lowering the interfacial impedance for ionic and electronic diffusion, despite this is quite challenging. This could further enhance the performance of AZIBs (Fig.…”

Research progress on modified Zn substrates in stabilizing zinc anodes

“…Li et al employed a straightforward etching technique to modify a multifunctional ordered zinc-aminotrimethylene phosphonic acid (Zn-ATMP) film on the surface of metallic zinc in situ . 97 The modified layer has a strong attraction to Zn, which can not only slow down side reactions and decrease the corrosion rate but also reduce the Zn nucleation overpotential and hasten the diffusion and even deposition of Zn 2+ . As a result, the as-prepared Zn-ATMP@Zn anode in the symmetric cell achieves a long cycling stability of 1000 h at 10.0 mA cm −2 with a high areal capacity of 5 mA h cm −2 .…”

Recent advances of organic polymers for zinc-ion batteries

“…In comparison to ex situ coating, the coating layer formed by in situ chemical reaction provides Zn with better mechanical stability and contact adhesion. 81 Bi-based anti-corrosion coating layer might prevent hazardous side reactions during anode/electrolyte contact, offer a consistent surface for promoting uniform nucleation of ions. Lu et al 82 took place a simple and economical metallic replacement method successfully manufactured a Bi-PVDF membrane coated on Zn metal (Zn@Bi-PVDF) with 3D cross-linked structures, as shown in Fig.…”