Temperature Dependent Local Structure of Na_{x}CoO₂ Cathode Material for Rechargeable Sodium-Ion Batteries

Wojciech Olszewski; Marta Ávila Pérez; Carlo Marini; Eugenio Paris; Xianfen Wang; Tatsumi Iwao; Masashi Okubo; Atsuo Yamada; Takashi Mizokawa; Naurang Lal Saini; Laura Simonelli

doi:10.1021/acs.jpcc.5b10885

journal article·2016-03-03

Temperature Dependent Local Structure of Na_xCoO₂ Cathode Material for Rechargeable Sodium-Ion Batteries

Wojciech Olszewski, Marta Ávila Pérez, Carlo Marini, Eugenio Paris, Xianfen Wang, Tatsumi Iwao, Masashi Okubo, Atsuo Yamada, Takashi Mizokawa, Naurang Lal Saini, Laura Simonelli

The Journal of Physical Chemistry C· Volume 120· Issue 8

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Source abstract

Abstract

We have investigated the local structure of differently charged Na x CoO 2 cathode material as a function of temperature by Co K-edge X-ray absorption fine structure (EXAFS) measurements. We have found that the charge/discharge process has a direct effect on the bond characteristics of the cathode in the Na-ion batteries. The results reveal that the local Co–O bonds get softer, while the Co–Co bonds hardly show any change during discharge (sodiation). The present study underlines the key role of local atomic displacements in diffusion and the reversibility of ions in cathodes for batteries and points toward the feasibility of Na x CoO 2 to be used as a cathode material. The results are discussed in comparison with the lithiation/delithiation of Li x CoO 2 battery materials.

Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage

OpenAlex topics: Advancements in Battery Materials · Advanced Battery Materials and Technologies · Advanced Battery Technologies Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

ALBA Synchrotron Light Facility, Carrer de la Llum 2-26, 08290 Cerdanyola del Vallés, Barcelona, Spain

Faculty of Physics, University of Bialystok, 1L K. Ciołkowskiego Str., 15-245 Białystok, Poland

Dipartimento di Fisica, Universitá di Roma “La Sapienza” P. le Aldo Moro 2, 00185 Rome, Italy

Center for Life NanoScience@Sapienza, Istituto Italiano di Tecnologia, V.le Regina Elena 291, 00185 Rome, Italy

Department of Chemical System Engineering, School of Engineering, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656, Japan

Department of Applied Physics, Waseda University, Tokyo 169-8555, Japan

Funding

Sapienza Università di Roma · University of Tokyo

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