Decoding Interfacial Evolution of Aluminum Anode and Constructing Multifunctional Layers toward Ultra-Long Cycle Stability
Abstract
Understanding the dynamic evolution of the aluminum anode interface in ionic liquid electrolytes is crucial for the large-scale application of rechargeable aluminum batteries (RABs). Herein, we use a series of advanced in situ characterizations to reveal a dendrite-to-corrosion transition, demonstrating that imidazolium cations (EMI + ) fundamentally dominate anode degradation and instability. Therefore, based on a differential access mechanism, we engineer a metal–organic framework (MOF-C) layer with molecular-scale nanochannels that selectively block corrosive EMI + while accelerating AlCl 4 – diffusion. The modified Al/MOF-C anode achieves an unprecedented cycling stability of >11,000 h (at 1 mA cm –2 with minimal 20 mV overpotential) in symmetric cells, far exceeding all previous reports (typically
Fields of Study & Subjects
Advancements in Battery Materials
Advanced Battery Materials and Technologies
Thermal Expansion and Ionic Conductivity
Publication details
- Journal / source
- Journal of the American Chemical Society
- Publisher
- American Chemical Society (ACS)
- Volume
- 148
- Issue
- 9
- Pages
- 9990–10001
- Publication date
- 2 March 2026
- Language
- EN