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 Liang, Xinyue;Zou, Xuefeng;Ren, Xiaolei;Xiang, Bin;Li, Wenpo;Chen, Feng;Hao, Jiangyu;Hu, Qin;Feng, Li;
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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