Synthesis and characterization of a
tri-layered solid electrolyte and oxygen permeable solid air cathode for
lithium-air battery cells were carried out in this investigation. Detailed
fabrication procedures for solid electrolyte, air cathode and real-world
lithium-air battery cell are described. Materials characterizations were
performed through FTIR and TGA measurement. Based on the experimental
four-probe conductivity measurement, it was found that the tri-layered solid
electrolyte has a very high conductivity at room temperature, 23。C, and it can
be reached up to 6 times higher at 100。C. Fabrication of real-world lithium-air
button cells was performed using the synthesized tri-layered solid electrolyte,
an oxygen permeable air cathode, and a metallic lithium anode. The lithium-air
button cells were tested under dry air with 0.1 mA - 0.2 mA discharge/ charge
current at elevated temperatures. Experimental results showed that the
lithium-air cell performance is very sensitive to the oxygen concentration in
the air cathode. The experimental results also revealed that the cell
resistance was very large at room temperature but decreased rapidly with
increasing temperatures. It was found that the cell resistance was the prime
cause to show any significant discharge capacity at room temperature. Experimental
results suggested that the lack of robust interfacial contact among solid
electrolyte, air cathode and lithium metal anode were the primary factors for
the cell’s high internal resistances. It was also found that once the cell
internal resistance issues were resolved, the discharge curve of the battery
cell was much smoother and the cell was able to discharge at above 2.0 V for up
to 40 hours. It indicated that in order to have better performing lithium-air
battery cell, interfacial contact resistances issue must have to be resolved
Zheng, J.P., Liang, R.Y., Hendrickson, M. and Plichta, E.J. (2008) Theoretical Energy Density of Li-Air Batteries. Journal of Electro-chemical Society, 155, A432-A437. http://dx.doi.org/10.1149/1.2901961
Girishkumar, G., McCloskey, B., Luntz, A. C., Swanson, S. and Wilcke, W. (2010) Lithium-air battery: promise and challenges, Journal of Physical Chemistry Letters, 1, 2193–2203. http://dx.doi.org/10.1021/jz1005384
McCloskey, B.D., Bethune, D.S., Shelby, R.M., Girishkumar, G. and Luntz, A.C. (2011) Solvents’ Critical Role in Nonaqueous Lithium-Oxygen Battery Electrochemistry. Journal of Physical Chemistry Letter, 2, 1161.
Jung, K.N., Lee, J.I., Jung, J.H., Shin, K.H. and Lee, J.W. (2014) A Quasi-Solid-State Rechargeable Lithium-Oxygen Battery Based on a Gel Polymer Electrolyte with an Ionic Liquid. Chemical Communications, 50, 5458.
Wang, X., Zhu, D., Song, M., Cai, S., Zhang, L. and Chen, Y. (2014) A Li-O2/Air Battery Using an Inorganic Solid-State Air Cathode. ACS Applied Materials and Interfaces, 6, 11204. http://dx.doi.org/10.1021/am501315n
Nadège Bonnet-Mercier, N., Raymond A. Wong, R. A., Morgan L. Thomas, M.L., Arghya Dutta, A., Keisuke Yamanaka, K., Chihiro Yogi, C., Toshiaki Ohta, T. and Hye Ryung Byon, H.R. (2014) A Structured Three-Dimensional Polymer Electrolyte with Enlarged Active Reaction Zone for Li-O2 Batteries. Scientific Reports, 4, 7127.
Shin, J.-H., Henderson, W.A. and Passerini, S. (2005) PEO-Based Polymer Electrolytes with Ionic Liquids and Their Use in Lithium Metal-Polymer Electrolyte Batteries. Journal of The Electro-chemical Society, 152, A978.
Appetecchi1, G.B., Crocel, F., Hassounl, J., Salomon, M. and Scrosati1, B. (2003) Hot-Pressed, Dry, Composite, PEO-Based Electrolyte Membranes: I. Ionic Conductivity Characterization. Journal of Power Sources, 114, 105.
Black, R., Oh, S.H., Lee, J.H., Yim, T., Adams, B. and Nazar, L.F. (2012) Screening for Superoxide Reactivity in Li-O2 Batteries: Effect on Li2O2/LiOH Crystallization. Journal of American Chemical Society, 134, 2902-2905.