Ultrathin nickel manganese nanosheets with rich oxygen-vacancy as a durability electrode for aqueous Ni//Zn batteries.

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ID: 108259
2020
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Abstract
Advanced aqueous batteries with abundant global reserves, large discharge capacity and long life span are crucial research objectives. Herein, a kind of aqueous Zn-ion battery was fabricated with ultra-thin Ni-Mn nanosheet electrode and zinc foil. A simple H-annealing process was employed to handle the NiMnO nanosheets to form oxygen vacancy. Based on the formation of fast ion diffusion channels and the increase of active sites, the fabricated H-NiMnO nanosheet electrode displays an areal capacity of 0.68 mA h cm at a current density of 2 mA cm and an excellent cycling performance (almost no reduction after 6000 cycles). The fabricated H-NiMnO//Zn battery obtains a high areal capacity, up to 0.66 mA h cm at a current density of 4 mA cm, and shows a long cycling stability (88.5% capacity retention after 5500 cycles). In particular, it has a high energy density, up to 1.13 mW cm at a power density of 3.34 mW cm, more than many other similar devices. Thus, this research provides a new idea for the wide application of aqueous Zn-ion battery in intelligent equipment and electric vehicles.
Reference Key
liang2020ultrathinjournal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Xinyue Liang, Xuefeng Zou, Xiaolei Ren, Bin Xiang, Wenpo Li, Feng Chen, Jiangyu Hao, Qin Hu, Li Feng
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Journal Journal of colloid and interface science
Year 2020
DOI
S0021-9797(20)30770-0
URL
Keywords
oxygen vacancy aqueous cycling stability ni//zn battery ultrathin nanosheets

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