Interfacial reactions of solid electrolytes play an important role in all-solid-state batteries. The interface resistances—describing charge transfer between electrode and solid electrolyte—and the cycle stability of the battery depend on the chemical and physical properties of the interfaces. As buried interfaces in all-solid-state batteries are difficult to investigate, the knowledge on interfacial reactions and the interfacial kinetics is poor—especially in case of the interface between solid electrolytes and alkali metal. Here, a simple and straightforward technique for the investigation of the formation of an interfacial reaction zone (interphase) at the surface of a solid electrolyte is presented. The key concept is to use the internal argon ion sputter gun in a standard lab-scale photoelectron spectrometer to deposit thin metal films (e.g. lithium) on the sample surface and to study the reaction between metal and solid electrolyte by photoelectron spectroscopy directly after deposition. As an example for the formation of interphases on solid electrolyte materials, lithium is deposited on lithium lanthanum titanate (LLTO), and the reaction is observed by XPS in situ. The obtained spectra show the formation of reduced titanium ions and titanium metal due to the reaction of LLTO with Li—i.e. by lithium insertion. The presented experimental approach can be used for the deposition of virtually any metal on the sample and can be easily adapted to a wide range of applications such as enhancing the electronic conductivity of samples in situ, studies of electronic contact properties in devices, detailed analysis of emission depth distribution functions for thin overlayers or to create internal binding energy standards.
Solid State Ionics – Elsevier
Published: Oct 1, 2015
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.
All for just $49/month
Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.
Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.
It’s easy to organize your research with our built-in tools.
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