Ionic Layer Epitaxy Growth of Organic/Inorganic Composite Protective Layers for Large-Area Li and Zn Metal Anodes.
basic_science · Level V
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- Record sourced from PubMed, PMID 37975687.
- Also identified by DOI 10.1021/acs.nanolett.3c03639.
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Abstract
Li and Zn metal batteries using organic and aqueous electrolytes, respectively, are desirable next-generation energy storage systems to replace the traditional Li-ion batteries. However, their cycle life and safety performance are severely constrained by a series of issues that are attributed to dendrite growth. To solve these issues, a nanothick ZnO-oleic acid (ZnO-OA) composite protective layer is developed by a facile ionic layer epitaxy method. The ZnO-OA layer provides strong lithophilic and zincophilic properties, which can effectively induce uniform ion deposition. As a result, the ZnO-OA protected Li and Zn metal anodes can cycle stably for over 600 and 1000 h under a large current density of 10 mA cm<sup>-2</sup>. Employing the ZnO-OA protected anodes, the Li||LiFePO<sub>4</sub> cell can maintain a capacity retention of 99.5% after 600 cycles at a 1 C rate and the Zn||MnO<sub>2</sub> cell can operate stably for 1000 cycles at 1 A g<sup>-1</sup> current density.