One-Pot Spray Engineering to Design Na0.44MnO2 Cathode Electrodes for High-Rate and Cycle-Stable Na-Ion Batteries

To improve the practical performance of Na-ion batteries, electrode structure engineering provides a new route to improve the electrochemical efficiency of the cathode active material. In this study, we suggest a new route of one-pot spray engineering to design Na0.44MnO2 cathodes to realize high-ra...

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Bibliographic Details
Published inBatteries (Basel) Vol. 8; no. 10; p. 181
Main Authors Koo, Bon-Ryul, Lee, Young-Geun, Lee, Sang Ho, An, Geon-Hyoung, Huang, Chun
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.10.2022
Subjects
Battery cycles
Carbon
Cathodes
Collectors
Contact angle
Design engineering
electrode structure
Electrodes
Electrolytes
Energy storage
Lithium
Na0.44MnO2
one-pot spraying construction
open-pores networking structure
Rechargeable batteries
Sodium
Sodium-ion batteries
sodium-ion battery
Solvents
Spectrum analysis
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Summary:To improve the practical performance of Na-ion batteries, electrode structure engineering provides a new route to improve the electrochemical efficiency of the cathode active material. In this study, we suggest a new route of one-pot spray engineering to design Na0.44MnO2 cathodes to realize high-rate and cycle-stable Na-ion battery performance. This technique adjusts the electrode structure from a dense to an open sponge-like morphology during layer-by-layer deposition of the materials. The sponge-like cathode results in improved ion insertion and transport kinetics, thus accelerating the rate capability with increased capacity and high-rate cycling capability (100.1 mAh/g and 90.2% cycling retention after 100 cycles at 5 C). These results highlight the potential for design engineering of cathode structures to achieve high-rate and cycle-stable performance for Na-ion batteries.
ISSN:2313-0105
2313-0105
DOI:10.3390/batteries8100181