Skip to Main content Skip to Navigation
Journal articles

Siloxene: A potential layered silicon intercalation anode for Na, Li and K ion batteries

Abstract : The alloying reaction between 14th group elements and alkali can be detrimental for Li, Na or K-ion batteries due to the large associated volume expansion that leads to a rapid capacity fading. In order to overcome this issue, their associated 2D phases are promising anodes that enable alkali intercalation without alloying reaction and volume expansion. In this study, the lamellar siloxene obtained from topotactic deintercalation of Ca from CaSi2 delivered reversible capacities of 2300, 311 and 203 mAh/g for Li, Na and K, respectively, with good capacity retention and coulombic efficiency for Li and Na. The intercalation mechanism taking place upon cycling is highlighted on the basis of ex situ Raman characterization combined with IR spectroscopy, SEM and TEM. To the best of our knowledge, it is the first time that a lamellar Silicon based material shows such high stable capacity without volume expansion, representing a real breakthrough for the batteries field and particularly for NIB
Document type :
Journal articles
Complete list of metadata

https://hal.umontpellier.fr/hal-02089369
Contributor : Accord Elsevier Ccsd Connect in order to contact the contributor
Submitted on : Friday, October 22, 2021 - 7:37:35 AM
Last modification on : Tuesday, December 7, 2021 - 12:46:10 PM

File

S0378775319301478.pdf
Files produced by the author(s)

Licence


Distributed under a Creative Commons Attribution - NonCommercial 4.0 International License

Identifiers

Citation

Laura Loaiza, Laure Monconduit, Vincent Seznec. Siloxene: A potential layered silicon intercalation anode for Na, Li and K ion batteries. Journal of Power Sources, Elsevier, 2019, 417, pp.99-107. ⟨10.1016/j.jpowsour.2019.02.030⟩. ⟨hal-02089369⟩

Share

Metrics

Record views

234

Files downloads

91