Constructing robust heterostructured interface for anode-free zinc batteries with ultrahigh capacities.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 36604413.
- Also identified by DOI 10.1038/s41467-022-35630-6 and PMC identifier 9816316.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
The development of Zn-free anodes to inhibit Zn dendrite formation and modulate high-capacity Zn batteries is highly applauded yet very challenging. Here, we design a robust two-dimensional antimony/antimony-zinc alloy heterostructured interface to regulate Zn plating. Benefiting from the stronger adsorption and homogeneous electric field distribution of the Sb/Sb<sub>2</sub>Zn<sub>3</sub>-heterostructured interface in Zn plating, the Zn anode enables an ultrahigh areal capacity of 200 mAh cm<sup>-2</sup> with an overpotential of 112 mV and a Coulombic efficiency of 98.5%. An anode-free Zn-Br<sub>2</sub> battery using the Sb/Sb<sub>2</sub>Zn<sub>3</sub>-heterostructured interface@Cu anode shows an attractive energy density of 274 Wh kg<sup>-1</sup> with a practical pouch cell energy density of 62 Wh kg<sup>-1</sup>. The scaled-up Zn-Br<sub>2</sub> battery in a capacity of 500 mAh exhibits over 400 stable cycles. Further, the Zn-Br<sub>2</sub> battery module in an energy of 9 Wh (6 V, 1.5 Ah) is integrated with a photovoltaic panel to demonstrate the practical renewable energy storage capabilities. Our superior anode-free Zn batteries enabled by the heterostructured interface enlighten an arena towards large-scale energy storage applications.