Hollow nanostructured NiO particles as an efficient electrode material for lithium-ion energy storage properties

This work has developed a straightforward approach to obtaining NiO hollow structures by using Li 2 O 2 as an easily removable template. The easy availability and electrochemically active nature of NiO have attracted researchers' attention as an anode electrode for Li-ion storage applications,...

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Bibliographic Details
Published in:RSC advances 2023-07, Vol.13 (32), p.227-2216
Main Authors: Hwang, Young Geun, Nulu, Venugopal, Nulu, Arunakumari, Sohn, Keun Yong
Format: Article
Language:English
Subjects:
Activated carbon
Anodes
Chemistry
Electrochemical analysis
Electrode materials
Electrodes
Energy storage
Ion storage
Lithium ions
Nanostructure
Nanostructured materials
Nickel oxides
Rechargeable batteries
Storage batteries
Supercapacitors
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Summary:This work has developed a straightforward approach to obtaining NiO hollow structures by using Li 2 O 2 as an easily removable template. The easy availability and electrochemically active nature of NiO have attracted researchers' attention as an anode electrode for Li-ion storage applications, including Li-ion secondary batteries (LIBs) and for Li-ion hybrid supercapacitors (LiHSCs; which offer higher power densities than LIBs without compromising energy density). However, NiO usage has been limited to its low reaction reversibility, poor conductivity, and conversion reaction capability. Recently, hollow nanostructured materials have attracted attention as efficient battery materials due to their fascinating structural features. This study presents a modified Li 2 O 2 -assisted method to obtain porous open 3D architectures of NiO nanostructures. The resultant hollow structures are electrochemically studied as an anode for a LIB, exhibiting excellent stability over hundreds of cycles. The result is recognized as one of the finest among NiO anodes reported. Also, NiO hollow structures studied as anodes for LiHSC devices fabricated with activated carbon cathodes exhibit an outstanding comprehensive electrochemical performance which is better than the typical LIB and supercapacitors. A facile non-aqueous chemical approach was employed for the synthesis of NiO porous hollow structures by using an easily water washable template. These hollow particles are greatly beneficial to the Li-ion battery and Li-ion hybrid supercapacitors.
ISSN:2046-2069
2046-2069
DOI:10.1039/d3ra03467d