In:
Physical Chemistry Chemical Physics, Royal Society of Chemistry (RSC), Vol. 24, No. 32 ( 2022), p. 19177-19183
Abstract:
The Mn 3d electronic-structure change of the LiMn 2 O 4 cathode during Li-ion extraction/insertion in an aqueous electrolyte solution was studied by operando resonant soft X-ray emission spectroscopy (RXES). The Mn L 3 RXES spectra for the charged state revealed the Mn 4+ state with strong charge-transfer from the O 2p to Mn 3d orbitals dominates, while for the open-circuit-voltage and discharged states it is ascribed to the mixture of sites with Mn 3+ and Mn 4+ states. The degree of charge transfer is significantly different between the Mn 3+ and Mn 4+ states, indicating that the redox reaction takes place on the strongly-hybridized Mn 3d–O 2p orbital rather than the localized Mn 3d orbital.
Type of Medium:
Online Resource
ISSN:
1463-9076
,
1463-9084
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
detail.hit.zdb_id:
1476283-3
detail.hit.zdb_id:
1476244-4
detail.hit.zdb_id:
1460656-2
Permalink