Nonionic Surfactant-Assisted <i>In Situ</i> Generation of Stable Passivation Protective Layer for Highly Stable Aqueous Zn Metal Anodes.
basic_science · Level V
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- Record sourced from PubMed, PMID 36279311.
- Also identified by DOI 10.1021/acs.nanolett.2c03114.
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Abstract
A highly stable interface for aqueous rechargeable Zn batteries is of importance to inhibit the growth of Zn dendrites and suppress the side reactions. In this work, we have developed a stable honeycomb-like ZnO passivation protective layer on the Zn surface, which is <i>in situ</i> generated with the assistance of a nonionic surfactant additive (polyethylene glycol tert-octylphenyl ether, denoted as PEGTE). The ZnO passivation layer can facilitate the uniform distribution of the electric field, guiding the uniform deposition of Zn<sup>2+</sup> and inhibit the generation of dendrites. As a result, the symmetric cell using the electrolyte with PEGTE shows an excellent performance at high areal capacity, reflected by stable cycling for over 2400 h at 5 mAh/cm<sup>2</sup> and 1300 h at 10 mAh/cm<sup>2</sup>. The full cell paired with V<sub>2</sub>O<sub>5</sub> demonstrates a long lifespan for more than 600 cycles at a low negative/positive capacity ratio.