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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
20
th
International Conference on
Advanced Energy Materials and Research
The role of atomic bond strengths and structural disorder in MXene materials for rechargeable ion-
batteries
Wojciech Olszewski
1, 2
, Carlo Marini
1
, Nitya Ramanan
1
, Masashi Okubo
3
, Naurang Lal Saini
4
and
Laura Simonelli
1
1
ALBA Synchrotron Light Facility, Spain
2
University of Bialystok, Poland
3
The University of Tokyo, Japan
4
Universitá di Roma “La Sapienza", Italy
I
on batteries are a key technology and play a dominant role in today's world. Extensive research efforts have been dedicated
to exploring and developing new cathode materials with higher capacities and lifetimes. Recently, a new family of transition
metal carbides and carbonitrides called “MXene” has been synthesized with a layered hexagonal structure and M
n+1
AX
n
chemistry, where M is an early transition metal, A is an A-group element (mostly groups 13 and 14), X is carbon or nitrogen,
and n=1, 2, or 3. MXenes have been found to be promising electrode materials, with capacities close to that of commercially
available batteries and an excellent capability to handle high cycling rates. However, studies of correlation of their structural
stability and functional properties could help to expand further theirs performances. To address this issue we have performed
temperature dependent extended X-ray absorption fine structure (EXAFS) measurements at the Ti K-edge on representative
members of the MXene family. Temperature dependent measurements permit to have direct access to the local force constant
between the atomic pairs and correlate this information with the battery capacity and ions diffusion rate. Presented results
address fundamental structural aspects that define the functional properties of electrode materials for ion batteries.
Recent Publications
1. Olszewski W, Isturiz I, Marini C, Avila M, Okubo M, Li H, Zhou H, Mizokawa T, Saini N L and Simonelli L (2018) Effects
of nanostructuring on the bond strength and disorder in V
2
O
5
cathode material for rechargeable ion-batteries, physical
chemistry. Chemical Physics 20:15288-15292.
2. Simonelli L, Paris E, Wakita T, Marini C, Terashima K, Miao X, Olszewski W, Ramanan N, Heinis D, Kubozono Y, Yokoya
T, Saini N L (2017) Effect of molecular intercalation on the local structure of superconducting Nax(NH
3
)yMoSe
2
system,
Journal of Physics and Chemistry of Solids 111: 70-74.
3. Broux T, Bamine T, Fauth F, Simonelli L, Olszewski W, Marini C, Ménétrier M, Carlier D, Masquelier C, Croguennec L
(2016) Strong impact of the oxygen content in Na
3
V
2
(PO
4
)2F
3
-yOy (0 ≤ y ≤ 0.5) on its structural and electrochemical
properties, Chem. Mater. 28: 7683–7692.
4. Olszewski W, Avila Perez M, Marini C, Paris E, Wang X, Iwao T, Masashi Y, Atsuo M, Takashi S, Saini N, Simonelli L
(2016) Temperature Dependent Local Structure of NaxCoO
2
Cathode Material for Rechargeable Sodium-ion Batteries,
Journal of Physical Chemistry C 120: 4227-4232.
5. Paris E, Simonelli L, Wakita T, Marini C, Lee J-H, Olszewski W, Terashima K, Kakuto T, Nishimoto N, Kimura T, Kudo
K, Kambe T, Nohara M, Yokoya T, Saini N (2016) Temperature dependent local atomic displacements in ammonia
intercalated iron selenide superconductor, Scientific Reports 6: 27646.
Biography
Wojciech Olszewski is a Post-Doctoral Research Associate at the ALBA Synchrotron Light Facility. He studies energy materials, and the current research direction is the
investigation of the structural stability, local atomic displacements and the force constants during the diffusion process for finding a realistic correlation between the local
structure and functional properties of cathode materials.
wolszewski@cells.esWojciech Olszewski et al., Innov Ener Res 2018, Volume 7
DOI: 10.4172/2576-1463-C1-002