Effect of Structure on the Storage Characteristics of ManganeseOxide Electrode Materials

Journal Article · Tue Jan 31 00:00:00 EST 2006 · Journal of Power Sources

OSTI ID:919824

Park, Yong Joon; Doeff, Marca M

Eleven types of manganese-containing electrode materialswere subjected to long-term storage at 55oC in 1M LiPF6 ethylenecarbonate/dimethyl carbonate (EC/DMC) solutions. The amount of manganesedissolution observed depended upon the sample surface area, the averageMn oxidation state, the structure, and substitution levels of themanganese oxide. In some cases, structural changes such as solvateformation were exacerbated by the high temperature storage, andcontributed to capacity fading upon cycling even in the absence ofsignificant Mn dissolution. The most stable materials appear to beTi-substituted tunnel structures and mixed metal layered oxides with Mnin the +4 oxidation state.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE. Assistant Secretary for Energy Efficiency andRenewable Energy. Vehicle Technologies
• DOE Contract Number: DE-AC02-05CH11231
• OSTI ID: 919824
• Report Number(s): LBNL-59450; JPSODZ; R&D Project: 500301; BnR: VT0301030; TRN: US200822%%574
• Journal Information: Journal of Power Sources, Vol. 165, Issue 2; Related Information: Journal Publication Date: 03/20/2007; ISSN 0378-7753
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
ELECTRODES
MANGANESE
MANGANESE OXIDES
OXIDES
STORAGE
SURFACE AREA
Manganese oxides cathode materials storage at 55oC manganesedissolution