Electrochemical behavior of LiMn{sub 2}O{sub 4} and LiCoO{sub 2} thin films produced with pulsed laser deposition
- Lawrence Berkeley National Lab., CA (United States). Energy and Environment Div.
Thin films of Li{sub x}Mn{sub 2}O{sub 4} and Li{sub x}CoO{sub 2} have been prepared by pulsed laser deposition on heated stainless steel substrates. These films have thicknesses from 0.2 to 1.5 {micro}m and are crystalline without postdeposition annealing. The films` electrochemical properties were studied with cyclic voltammetry, current pulse measurements, and galvanostatic charge/discharge techniques. Film capacity densities as high as 56 and 62 {micro}Ah/cm{sup 2}-{micro}m were measured for Li{sub x}Mn{sub 2}O{sub 4} and Li{sub x}CoO{sub 2}, respectively. Chemical diffusivities on the order of 2.5 {times} 10{sup {minus}11} and 1 {times} 10{sup {minus}10} were measured for Li{sub x}Mn{sub 2}O{sub 4} and Li{sub x}CoO{sub 2}, respectively. Some of the films were cycled electrochemically for up to 300 cycles against lithium metal in 1 M LiClO{sub 4}/propylene carbonate electrolyte, demonstrating the promise of pulsed laser deposition for the production of cathode films for rechargeable lithium microbatteries.
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 276637
- Journal Information:
- Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 6 Vol. 143; ISSN 0013-4651; ISSN JESOAN
- Country of Publication:
- United States
- Language:
- English
Similar Records
Solid-state redox reactions of LiCoO[sub 2] (R[bar 3]m) for 4 volt secondary lithium cells
Electrochemical In-situ conductivity measurements for thin film of Li{sub 1{minus}x}Mn{sub 2}O{sub 4} spinel