Spectroscopic study of the proton dynamics in manganese dioxide electrode materials
Conference
·
OSTI ID:555233
Proton or lithium diffusion is a critical electrode process that occurs in manganese dioxide electrode materials during cycling of either aqueous (alkaline) or non-aqueous (lithium) batteries. The structural and electrochemical properties of a number of hydrated alpha-phase manganese dioxide compounds ({alpha}-MnO{sub 2}{lg_bullet}nH{sub 2}O; n{approx}0.2-0.33), the heat-treated products (n{approx}0-0.1), as well as their more stable lithia-doped derivatives, {alpha}-[xLi{sub 2}O]{lg_bullet}MnO{sub 2} (0 {le} x {le} 0.25), have been investigated. Inelastic neutron scattering was used as a means to differentiate and interrogate the key proton or water interactions in these MnO{sub 2} structures. The neutron spectra reveal excitations associated with the hydrogen vibrations centered at 4, 13, 16, 26, 36, 65, 90, 110, 140, 200, 420, and 490 meV in the alpha-phase and 14, 24, 65, 84, 100, 202, and 425 meV in the lithia-doped derivatives. Band assignments were carried out by comparing these frequencies with those reported for structurally similar hydrated {gamma}-MnO{sub 2} compounds and comparison with infrared data.
- Research Organization:
- Argonne National Lab., IL (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 555233
- Report Number(s):
- ANL/IPNS/CP--93154; CONF-970814--; ON: DE97054134
- Country of Publication:
- United States
- Language:
- English
Similar Records
Structural and electrochemical studies of alpha manganese dioxide ({alpha}-MnO{sub 2})
Lithium-oxide-stabilized alpha manganese dioxide for rechargeable lithium batteries
Stabilized alpha-MnO{sub 2} electrodes for rechargeable 3 V lithium batteries
Conference
·
Thu Aug 01 00:00:00 EDT 1996
·
OSTI ID:373809
Lithium-oxide-stabilized alpha manganese dioxide for rechargeable lithium batteries
Conference
·
Sat Jun 01 00:00:00 EDT 1996
·
OSTI ID:379043
Stabilized alpha-MnO{sub 2} electrodes for rechargeable 3 V lithium batteries
Journal Article
·
Tue Jul 01 00:00:00 EDT 1997
· Journal of the Electrochemical Society
·
OSTI ID:533105