In situ spectroscopic applications to the study of rechargeable lithium batteries. Final report
- Case Western Reserve Univ., Cleveland, OH (United States). Dept. of Chemistry
A new experimental approach has been developed and implemented for the study of various aspects of lithium electrochemistry under utmost conditions of cleanliness. This novel strategy takes advantage of the low vapor pressure of ultrapure lithium salt/polyethylene oxide electrolytes for conducting conventional electrochemical experiments in ultrahigh vacuum environments with a wide variety of electrodes prepared and characterized by surface analytical techniques. Two processes were investigated using a LiClO{sub 4}/PEO electrolyte at temperatures in the range of 55-70 {degrees}C: (1) electrochemical insertion of lithium into the basal plane of highly ordered pyrolytic graphite, HOPG(bp), (2) underpotential deposition (UPD) of Li onto polycrystalline Au. The results provided conclusive evidence (except for impurity effects) that the electrochemical behavior observed in UHV is indeed characteristic of the systems selected for these studies, and therefore, is not affected in any discernible way by the ultralow pressures. In the case of Li UPD on polycrystalline Au, the voltammetric curves were similar to those observed in liquid non- aqueous solvent electrolytes, displaying deposition and stripping peaks with a charge equivalent to the adsorption and desorption of a single Li{sup +} per surface site.
- Research Organization:
- Lawrence Berkeley National Lab., CA (United States); Case Western Reserve Univ., Cleveland, OH (United States). Dept. of Chemistry
- Sponsoring Organization:
- USDOE Assistant Secretary for Energy Efficiency and Renewable Energy, Washington, DC (United States)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 409896
- Report Number(s):
- LBNL--39162; ON: DE97001198; CNN: Contract 4606210
- Country of Publication:
- United States
- Language:
- English
Similar Records
Electrochemistry in ultrahigh vacuum. Intercalation of lithium into the basal plane of highly oriented pyrolytic graphite from a poly(ethylene oxide)/LiClO{sub 4} solid polymer electrolyte
A polymeric electrolyte rechargeable lithium battery
Underpotential deposition of lithium on aluminum in ultrahigh-vacuum environments
Journal Article
·
Thu Aug 03 00:00:00 EDT 1995
· Journal of Physical Chemistry
·
OSTI ID:90943
A polymeric electrolyte rechargeable lithium battery
Journal Article
·
Thu Dec 31 23:00:00 EST 1987
· J. Electrochem. Soc.; (United States)
·
OSTI ID:7031729
Underpotential deposition of lithium on aluminum in ultrahigh-vacuum environments
Journal Article
·
Wed Jan 06 23:00:00 EST 1999
· Journal of Physical Chemistry B: Materials, Surfaces, Interfaces, amp Biophysical
·
OSTI ID:315951