An sup 57 Fe Moessbauer study of the intermediates formed in the reduction of FeS sub 2 in the Li/FeS sub 2 battery system

Journal Article · Thu Jan 24 04:00:00 EST 1991 · Journal of Physical Chemistry; (USA)

DOI:https://doi.org/10.1021/j100155a053· OSTI ID:5787117

Jones, C H.W.; Kovacs, P E; Sharma, R D; McMillan, R S ^[1]

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1. Simon Fraser Univ., Burnaby, British Columbia (Canada)

{sup 57}Fe Moessbauer spectroscopy has been used to study the intermediates formed at the FeS{sub 2} cathode during room-temperature discharge in the Li{vert bar}LiClO{sub 4}-propylene carbonate {vert bar}FeS{sub 2} cell. Moessbauer spectra recorded at 4.2 K provided evidence for the formation of Li{sub 3}Fe{sub 2}S{sub 4} and another lithiated phase, similar to but not exactly the same as Li{sub 2}FeS{sub 2}. Small particles of superparamagnetic iron were also formed early in the discharge. When LiAsF{sub 6} was the electrolyte, no intermediates were detectable and rapid reduction to small particles of iron occurred. Chemical lithiation of FeS{sub 2} with n-Buli in hexane produced a mixture of reduction products similar to that observed for the Li{vert bar}LiClO{sub 4}-propylene carbonate{vert bar}FeS{sub 2} cell.

• OSTI ID: 5787117
• Journal Information: Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 95:2; ISSN 0022-3654; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250902* -- Energy Storage-- Batteries-- Performance & Testing
656002 -- Condensed Matter Physics-- General Techniques in Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
INFORMATION
INTERMEDIATE MASS NUCLEI
IRON 57
IRON COMPOUNDS
IRON ISOTOPES
IRON SULFIDES
ISOTOPES
LITHIUM-SULFUR BATTERIES
MEDIUM TEMPERATURE
METAL-NONMETAL BATTERIES
MOESSBAUER EFFECT
NUCLEI
NUMERICAL DATA
REACTION INTERMEDIATES
REDUCTION
STABLE ISOTOPES
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ULTRALOW TEMPERATURE