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Volume 7 Innovative Energy & Research
ISSN: 2576-1463 Advanced Energy Materials 2018
August 13-14, 2018
August 13-14, 2018 | Dublin, Ireland
20th International Conference on
Advanced Energy Materials and Research
TEM studies of epitaxial oxide films for advanced all solid Li-ion batteries
Leonid A Bendersky1, Haiyan Tan2, K Kamala Bharathi3, Saya Takeuchi1 and Aaron C Johnston Peck1
1Material Measurement Laboratory - NIST, USA
2Thermo Fisher Scientific, USA
3SRM University, India
Besides being of technological interest, thin films of different battery components, especially active cathode materials, can
be utilized for fundamental studies of the processes that govern the battery’s properties. Cathodes utilized in commercial
lithium batteries are complex systems consisting of a polycrystalline active material in the form of a powder mixed with
conductive carbon and a binding material. A simple system with no additives is desirable for use in the investigation of
interfacial reactions, especially for local microstructural studies by transmission electron microscopy (TEM). Such systems,
when synthesized in the form of a thin film, especially as a single (or pseudo-single) crystal epitaxial film, can provide powerful
insight into the processes occurring on a well-described two-dimensional interface, as well as the film interior. In our recent
works we successfully utilized LiCoO2 epitaxial films to study details of structural changes during electrochemical cycling. In
the work presented here the similar approach was extended to other important cathode systems, as well as for studying some
solid electrolytes.
Figure 1: (a, b) Schematic drawings of studied thin-film configurations; (c) Cyclic voltammograms of LiCoO2/SRO/STO configuration and;
(d) Structural changes in the LiCoO 2 film seen by HAADF-STEM.
Recent Publications:
1. Bendersky L A, Tan H, Bharathi K K, Li Z P and Johnston Peck A C (2017) Using epitaxial films to study fundamental
properties of cathode materials for modern Li-ion batteries. Crystals 7(5):127-143.
2. Johnston Peck A C, Takeuchi S, Bharathi K K, Herzing A A and Bendersky L A (2018) Local degradation pathways in
lithium-rich manganese-nickel-cobalt-oxide epitaxial thin films. Journal of Materials Science 53(2):1365-1379.
3. Bendersky L A, Shen H and Young K H (2016) Crystallographic alignment between c14 and bcc phases in a multi-
phase metal hydride alloys. Batteries 2(3):22.
4. Young K H, Ng K and Bendersky L A (2016) A technical report of the robust affordable next generation energy storage
system-basf program. Batteries 2(1):2.
5. Tan H, Takeuchi S, Bharathi K K, Takeuchi I and Bendersky L A (2016) Microscopy study of structural evolution in
epitaxial LiCoO2 cathode films during electrochemical cycling. ACS Applied Materials & Interfaces 8(10):6727–6735.
Biography
Leonid A Bendersky is a Research Scientist at Materials Science and Engineering Laboratory of National Institute of Standards and Technology (NIST). He
received his PhD degree in Materials Science from the Technion, Israel in 1982. From 1983 he has been with NIST working on a variety of advanced materials
and technologies including rapid solidification, quasicrystals, structural intermetallics, functional oxides, hydrogen storage and Li-ion batteries. His research is
focused on applying advanced transmission electron microscopy and crystallography to understand structural phase transitions and relation between properties
and structures. He is the author of over 200 publications.
Leonid A Bendersky et al., Innov Ener Res 2018, Volume 7
DOI: 10.4172/2576-1463-C1-003