Controlling the Formation of Sodium/Black Phosphorus IntercalationCompounds Towards High Sodium Content

Autor(en)

Katharina Werbach, Christian Neiss, Alexander Müllner, Gonzalo Abellan, Daria Setman, Vicent Lloret, Stefan Wild, Frank Hauke, Thomas Pichler, Andreas Hirsch, Herwig Peterlik

Abstrakt

The solid-state synthesis of pure sodium-black phosphorus intercalation compounds (Na-BPICs) has been optimized in bulk for two stoichiometric ratios. Specifically, in-situ X-Ray diffraction (XRD) allowed the precise identification of the optimal temperature range for the formation of Na-BPICs: 94 degrees C-96 degrees C. Moreover, as the undesired formation of Na3P takes place at this very same range, we succeeded in introducing a new synthetic route based on a fast-thermal ball milling implementation that results in the bulk production of BPIC without Na3P in 9 out of 10 cases. Finally, by combining XRD, Raman spectroscopy, and DFT calculations we developed a new structural model for Na-based BPICs showing an increase of BP's unit cell with Na atoms incorporated in every second layer. These results will pave the way for the large-scale synthesis and application of pure BPICs, which are of great interest in fields such as optoelectronics or energy storage.

Organisation(en)

Dynamik Kondensierter Systeme, Physik Nanostrukturierter Materialien, Elektronische Materialeigenschaften

Externe Organisation(en)

Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Universitat de València

Journal

Batteries & Supercaps

Anzahl der Seiten

7

ISSN

2566-6223

DOI

https://doi.org/10.1002/batt.202100053

Publikationsdatum

03-2021

Peer-reviewed

Ja

ÖFOS 2012

104005 Elektrochemie, 103018 Materialphysik

Schlagwörter

Link zum Portal

https://ucris.univie.ac.at/portal/de/publications/controlling-the-formation-of-sodiumblack-phosphorus-intercalationcompounds-towards-high-sodium-content(c073604f-a07d-4b59-a1de-79a89d0d7c94).html