Atomic visualization of a non-equilibrium sodiation pathway in copper sulfide

Cited 8 time in webofscience Cited 0 time in scopus
  • Hit : 143
  • Download : 4
Sodium ion batteries have been considered a promising alternative to lithium ion batteries for large-scale energy storage owing to their low cost and high natural abundance. However, the commercialization of this device is hindered by the lack of suitable anodes with an optimized morphology that ensure high capacity and cycling stability of a battery. Here, we not only demonstrate that copper sulfide nanoplates exhibit close-to-theoretical capacity (similar to 560 mAh g(-1)) and long-term cyclability, but also reveal that their sodiation follows a non-equilibrium reaction route, which involves successive crystallographic tuning. By employing in situ transmission electron microscopy, we examine the atomic structures of four distinct sodiation phases of copper sulfide nanoplates including a metastable phase and discover that the discharge profile of copper sulfide directly reflects the observed phase evolutions. Our work provides detailed insight into the sodiation process of the high-performance intercalation-conversion anode material.
Publisher
NATURE PUBLISHING GROUP
Issue Date
2018-03
Language
English
Article Type
Article
Keywords

TRANSMISSION ELECTRON-MICROSCOPY; ETHER-BASED ELECTROLYTE; REDUCED GRAPHENE OXIDE; ION BATTERIES; LITHIATION; NA; LITHIUM; LI; DIFFUSION; FEPO4

Citation

NATURE COMMUNICATIONS, v.9

ISSN
2041-1723
DOI
10.1038/s41467-018-03322-9
URI
http://hdl.handle.net/10203/240918
Appears in Collection
MS-Journal Papers(저널논문)
Files in This Item
000426469900024.pdf(2.71 MB)Download
This item is cited by other documents in WoS
⊙ Detail Information in WoSⓡ Click to see webofscience_button
⊙ Cited 8 items in WoS Click to see citing articles in records_button

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0