High-Areal-Loading Zinc-Ion Batteries with Long-Term Cycling at Practical Current Densities with Scalable Electrode Design.

ABSTRACT: Aqueous zinc-ion batteries (ZIBs) offer a safe and cost-effective solution for stationary energy storage, but achieving long-term cycling at high areal loadings and low C-rates remains challenging. Here, we present a polyaniline-based ZIB with a unique 3D interconnected sponge-like carbon nanotube (CNT) host that provides high porosity, mechanical resilience, and robust conductivity. This architecture supports active material loading up to 6 mg cm^-2, enabling stable cycling at practical current densities. With a dimethyl sulfoxide electrolyte additive, the cell retains 70% capacity over ∼6,000 cycles at 0.68C, highlighting its outstanding long-term stability at low rates. It also maintains ∼9,000 cycles at 6.8C, demonstrating high-rate capability. To demonstrate scalability, we

SUBMITTER: Islam MZ 

PROVIDER: S-EPMC12512180 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature