The stability of NASICON-type conducting glass–ceramic electrolyte, Li1+x+yAlxTi2−xSiyP3−yO12 (Ohara LICGC) has been characterized after prolonged exposure to deionized water and HCl(aq) solutions supported with LiCl. X-ray diffraction shows that the bulk crystallographic structure of the LICGC membranes remains unchanged when exposed to these solutions. Electrochemical impedance spectroscopy (EIS) shows that the conductivity of LICGC membranes immersed in deionized water remains stable over a one month period, while there is a significant increase in resistance when exposed to the acidic solutions. When exposed to pH 4 and 2 solutions for just 24 h, the resistances of the LICGC membrane increase by a factor of 8.5 and 23.5, respectively. EIS coupled with morphological characterization by scanning electron microscopy, shows that this resistance growth is due to the development of a surface layer on the LICGC membrane. However, this substantial increase in resistance can be mitigated by adding LiCl to the HCl solutions. For a pH 4 solution supported with 6.75 M LiCl, the impedance spectrum and surface morphology are qualitatively comparable to pristine, dry LICGC material, suggesting that surface layer formation was suppressed. This was also confirmed via cyclic voltammetry measurements in four-electrode electrochemical cells.
Journal of Power Sources – Elsevier
Published: Dec 15, 2017
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera