Abstract
High-rate and stable Zn-ion batteries working at low temperatures are highly desirable for practical applications, but are challenged by sluggish kinetics and severe corrosion. Herein, inspired by frost-resistant plants, we report trace hydroxyl-rich electrolyte additives that implement a dual remodeling effect for high-performance low-temperature Zn-ion batteries. The additive with high Zn absorbability not only remodels Zn2+ primary solvent shell by alternating H2O molecules, but also forms a shielding layer thus remodeling the Zn surface, which effectively enhances fast Zn2+ de-solvation reaction kinetics and prohibits Zn anode corrosion. Taking trace α-D-glucose (αDG) as a demonstration, the electrolyte obtains a low freezing point of −55.3 °C, and the Zn//Zn cell can stably cycle for 2000 h at 5 mA cm−2 under −25 °C, with a high cumulative capacity of 5000 mAh cm−2. A full battery that stably operates for 10000 cycles at −50 °C is also demonstrated.
Original language | English |
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Article number | e202318496 |
Journal | Angewandte Chemie - International Edition |
Volume | 63 |
Issue number | 9 |
DOIs | |
State | Published - 26 Feb 2024 |
Keywords
- High Rate
- Hydroxyl-Rich Additive
- Low Temperature
- Stability
- Zinc-Ion Batteries