Three-Dimensional Porous Carbon Nanocomposites with Grafted Block Copolymer Self-Assembly for High-Performance Aqueous Zinc-Ion Batteries
발표자
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초록
내용
Manganese oxide (MnO) has been extensively researched as an ideal cathode material for aqueous zinc-ion batteries (AZIBs) due to its low cost (0.96 to 1.6 US$ kg-1), high theoretical capacity (≈330 mAh g-1 based on one-electron reaction), and environment-friendly. However, low intrinsic conductivity, structural collapse, and slow reaction kinetics limit its electrochemical performance. Thus, the rational design of the cathode is crucial to overcome these limitations.
In this work, we introduce self-assembled three-dimensional porous carbon nanocomposites synthesized via block copolymer methods to examine the impact of different composite structures on battery performance. The three-dimensional porous carbon nanocomposite, enriched with MnO through block copolymer self-assembly, provides increased zinc active sites and facilitates rapid zinc ion diffusion due to its large surface area. Furthermore, the carbon nanocomposite's structural stability inhibits the dissolution of MnO.