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Simple Microwave‐Assisted Synthesis of Delafossite CuFeO 2 as an Anode Material for Sodium‐Ion Batteries
Author(s) -
Youn Duck Hyun,
Choi Yo Han,
Kim JunHyuk,
Han Sungmin,
Heller Adam,
Mullins C. Buddie
Publication year - 2018
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201800548
Subject(s) - delafossite , anode , microcrystalline , materials science , microwave , ion , chemistry , electrode , oxide , metallurgy , crystallography , physics , quantum mechanics , organic chemistry
A simple synthesis of microcrystalline delafossite CuFeO 2 is reported. Rhombohedral CuFeO 2 0.7–2.5 μm crystals were obtained by heating an aqueous solution of Fe(NO 3 ) 3 , Cu(NO 3 ) 2 , and propionaldehyde to 180 °C for 2 h in a microwave oven, which enables the synthesis of the CuFeO 2 microcrystals with significantly reduced heating time at a mild temperature. The electrode made with the delafossite CuFeO 2 discharged at 0.01 V and charged at 1.5 V vs Na + /Na and retained a reversible capacity of 240 mAh g −1 at a specific current of 0.1 Ag −1 after 200 cycles. The delafossite CuFeO 2 microcrystals could be a potential anode material for sodium‐ion batteries considering the simple synthetic method and acceptable reversible capacity compared to other nanostructured anode materials.