Properties of lithium phosphorus oxynitride (Lipon) for 3D solid-state lithium batteries

2010 ◽  
Vol 25 (8) ◽  
pp. 1507-1515 ◽  
Author(s):  
Fan Xu ◽  
Nancy J. Dudney ◽  
Gabriel M. Veith ◽  
Yoongu Kim ◽  
Can Erdonmez ◽  
...  
Keyword(s):  
Thin Film ◽  
Film Deposition ◽  
3D Structures ◽  
Thin Film Electrolyte ◽  
Axis Alignment ◽  
Film Electrolyte ◽  
Lithium Phosphorus Oxynitride ◽  
Planar Substrates ◽  
3D Solid ◽  
Lipon Film

The thin film electrolyte known as Lipon (lithium phosphorous oxynitride) has proven successful for planar thin film battery applications. Here, the sputter deposition of the amorphous LiPON electrolyte onto more complex 3D structures is examined. The 3D structures include off-axis alignment of planar substrates and also 10–100 μm arrays of pores, columns, and grooves. For magnetron sputtering in N2 gas at 2.6 Pa, the Lipon film deposition is not restricted to be line-of-sight to the target, but forms conformal and dense films over the 3D and off-axis substrates. The deposition rate decreases for areas and grooves that are less accessible by the sputtered flux. The composition varies, but remains within the range that gives sufficient Li+ ionic conductivity, 2 ± 1 μS/cm.

Fabrication of Solid Oxide Fuel Cells via Thin Film Techniques

2010 ◽  
Vol 654-656 ◽  
pp. 2787-2790 ◽  
Author(s):  
Yoon Ho Lee ◽  
Goo Young Cho ◽  
Young Seok Jee ◽  
Ikwhang Chang ◽  
Sang Kyun Kang ◽  
...  
Keyword(s):  
Thin Film ◽  
Film Deposition ◽  
Solid Oxide ◽  
Limiting Current ◽  
Membrane Electrode ◽  
Barium Zirconate ◽  
Oxide Fuel ◽  
Operation Temperature ◽  
Thin Film Electrolyte ◽  
Film Electrolyte

Fabricating electrolyte with thin film is one of various methods of lowering the operation temperature for solid oxide fuel cell (SOFC). Because the major polarization of SOFCs is ohmic loss, many groups have tried to fabricate a thin film electrolyte – some proton conducting material that has the conductivity of a couple of orders higher than oxygen conducting one. We have investigated the synthesis of Membrane Electrode Assembly (MEA) including Yttria-doped Barium Zirconate(BYZ) thin film electrolyte via thin-film processes such as Pulsed Laser Deposition and Sputtering. Another approach to lower the operation temperature of SOFCs is the bi-layer structure electrolyte. The functional layer via thin film deposition could guarantee minimum power density loss and stable operation. After the study of Atomic Layer Deposition (ALD) condition to deposit Yttria Stabilized Zirconia (YSZ) on Gadonilia doped Cerate (GDC) substrate, GDC/YSZ bi-layered electrolyte button cells showed higher OCV and larger limiting current with 100nm YSZ ultra thin film. The performance improvement might be attributed to the function of electron blocking and cutting off the reducible gas.

Fabrication of solid thin film electrolyte and LiCoO2 by aerosol flame pyrolysis deposition

2007 ◽  
Vol 80 (2) ◽  
pp. 502-506 ◽  
Author(s):  
Kihyun Cho ◽  
Jangwon Oh ◽  
Taewon Lee ◽  
Dongwook Shin
Keyword(s):  
Thin Film ◽  
Thin Film Electrolyte ◽  
Film Electrolyte
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