Constructing high-performance zinc metal anodes based on an amino-functionalized highly three-dimensional porous structure interface layer

Abstract

Aqueous zinc ion batteries (AZIBs) are one of the most well-liked power source systems at present because of their low price and elevated security. However, AZIBs still face challenges such as zinc dendrite formation, hydrogen evolution, and corrosion. Therefore, this work achieves high-performance dendrite-free AZIBs (Zn@MIL-101-NH₂) by constructing a highly three-dimensional porous Cr-based metal–organic framework (MIL-101-NH₂) artificial interface protection layer. MIL-101 has a highly three-dimensional porous structure, and –NH₂ groups are introduced. –NH₂, which is hydrophilic and zincophilic, reconfigures the hydrogen-bonding network structure around the artificial interfacial layer, inhibits the occurrence of the hydrogen precipitation reaction, and induces the uniform deposition of zinc ions. According to experimental results, the Zn@MIL-101-NH₂ full cell may retain up to 89.6% of its capacity after 1400 cycles at a current density of 1.0 A g⁻¹, demonstrating excellent electrochemical performance.