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Achieving stable Zn metal anode via a hydrophobic and Zn2+-conductive amorphous carbon interface.
- Source :
-
Journal of Colloid & Interface Science . Mar2024, Vol. 657, p644-652. 9p. - Publication Year :
- 2024
-
Abstract
- A hydrophobic and Zn2+-conductive amorphous carbon interface is in-situ constructed to improve the electrochemical performance of Zn anode. [Display omitted] • In-situ prepare a novel amorphous carbon (AC) interface layer to protect Zn anode. • AC interface layer possesses hydrophobic peculiarity and high Zn2+ transference rate. • Zn@AC anode presents mitigated dendrite growth and side reactions. • Zn@AC anode shows high performance for aqueous and solid zinc ion batteries. High security and low cost enable aqueous zinc ion batteries (AZIBs) with huge application potential in large-scale energy storage. Nevertheless, the loathsome dendrite and side reactions of Zn anode are harmful to the cycling lifespan of AZIBs. Here, a new type of thin amorphous carbon (AC) interface layer (∼100 nm in thickness) is in-situ constructed on the Zn foil (Zn@AC) via a facile low-temperature chemical vapor deposition (LTCVD) method, which owns a hydrophobic peculiarity and a high Zn2+ transference rate. Moreover, this AC coating can homogenize the surface electric field and Zn2+ flux to realize the uniform deposition of Zn. Consequently, dendrite growth and side reactions are concurrently mitigated. Symmetrical cell achieves a dendrite-free Zn plating/stripping over 500 h with a low overpotential of 31 mV at 1 mA cm−2/1 mAh cm−2. Of note, the full cell with a MnO 2 /CNT cathode harvests a capacity retention of 70.0 % after 550 cycles at 1 A/g. In addition, the assembled flexible quasi-solid-state AZIBs display a stable electrochemical performance under deformation conditions and maintain a capacity of 76.5 mAh/g at 5 A/g after 300 cycles. This innovative amorphous carbon layer is expected to provide a new insight into stabilizing Zn anode. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00219797
- Volume :
- 657
- Database :
- Academic Search Index
- Journal :
- Journal of Colloid & Interface Science
- Publication Type :
- Academic Journal
- Accession number :
- 174528030
- Full Text :
- https://doi.org/10.1016/j.jcis.2023.11.178